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Flying Pig[_2_] December 13th 09 02:53 PM

Uniden 525 VHF and general question
 
Hi, y'all,

I've been active on the cruiser's net here in Abaco, and this morning one of
the neighboring boats with a radio and antenna guru aboard called me after
to say that after about a minute of continuous transmission I got faint,
though still very clear. Another station chimed into the conversation to
say they had the same result. The original boat is right next to me, so
distance or atmospheric stuff was not a factor

His opinion was either corrosion in the cable which might have an effect, or
the radio heating up from continuous tx.

As I'm heading back to the states with a pretty big to-do list shortly, for
a month, I could send it off to Uniden for a look.

Wilbur, here, isn't a great fan of this particular radio, citing other
problems which increased over time. Anyone else have this experience with
this or other radios, identified it as something other than the radio, and
have the solution?

My antenna feed for the current installation runs in our bilge, and our
rudder post is currently in need of repacking, sending a constant stream of
water down the bilge/limberholes, where I expect there's at least one
connection. While that and any other connex are professionally done, I
expect some water COULD have penetrated. I'll have a look at that, first,
but would appreciate experienced input.

Thanks, y'all

L8R

Skip, in the Bahamas for another few days before a month ashore

--
Morgan 461 #2
SV Flying Pig KI4MPC
See our galleries at www.justpickone.org/skip/gallery !
Follow us at http://groups.yahoo.com/group/TheFlyingPigLog
and/or http://groups.google.com/group/flyingpiglog

"You are never given a wish without also being given the power to
make it come true. You may have to work for it however."
(and)
"There is no such thing as a problem without a gift for you in
its hand
(Richard Bach)



Lord Kelvin December 13th 09 03:33 PM

Uniden 525 VHF and general question
 

"Flying Pig" wrote in message
...

My antenna feed for the current installation runs in our bilge,



Ahahahahahahahahahahahahahahahahahahahahahahahahah ahahahahahahahahahahahahahahahahaha!
Bwahahahahahahahahahahahahahahahahahahahahahahahah ahahahahahahahahahahahahahahahahaha!
Hehehehehehehehehehehehehehehehehehehehehehehehehe hehehehehehehehehehehehehehehehehehe!



Wayne.B December 13th 09 06:44 PM

Uniden 525 VHF and general question
 
On Sun, 13 Dec 2009 09:53:52 -0500, "Flying Pig"
wrote:

My antenna feed for the current installation runs in our bilge, and our
rudder post is currently in need of repacking, sending a constant stream of
water down the bilge/limberholes, where I expect there's at least one
connection. While that and any other connex are professionally done, I
expect some water COULD have penetrated. I'll have a look at that, first,
but would appreciate experienced input.


IMHO the only wiring of any kind that belongs in the bilge is the
circuit for the bilge pump. Everything else will be much happier in
a dry location, especially if there are connectors involved. Just
about all wiring insulation develops pin hole leaks over time and salt
water intrusion will turn the finest copper into green powder in no
time at all.

I am not a big fan of Uniden electronics, preferring ICOM and Standard
for VHF radios. That said, the first step is to eliminate the
feedline and masthead antenna as possible suspects. Since we are
talking about short range, just about any kind of test antenna will
do, even a stub of wire about 18 inches long. Connect a test antenna
right at the radio and see if the problem recurs. If so you've got a
Uniden problem or a 12 volt power problem. You can eliminate power as
an issue with a voltmeter connected near the radio.


Flying Pig[_2_] December 13th 09 08:14 PM

Uniden 525 VHF and general question
 
Hi, Wayne, and future viewers.

It should be noted that I have termed the path for the water which comes
from the rudder post down the Vee in the hull, well above any usual bilge,
as the bilge in this case. Any water which could enter the lazarette area
also flows on this path.

So, it's not a standing water situation, and there was no practical route to
get the antenna from the helm to the arch other than that - and, that's
where it was when we got the boat - so, that's where it is, still. It's a
Shakespeare stick so has their pigtail of whatever length it was, then a
connector to the cable to the helm. If it weren't for that, I'd probably
replace that cable at the same time I'm doing the mast one.

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))

As to sagging power, with an 880AH bank, I doubt that's a problem, BICBW
:{)) That said, this radio has, regardless of source, often given a "low
battery" display long before I'd have expected it in terms of the "ambient"
(under load) voltage, and without transmission, so perhaps that's a radio
issue...

L8R

Skip

Morgan 461 #2
SV Flying Pig KI4MPC
See our galleries at www.justpickone.org/skip/gallery !
Follow us at http://groups.yahoo.com/group/TheFlyingPigLog
and/or http://groups.google.com/group/flyingpiglog

"You are never given a wish without also being given the power to
make it come true. You may have to work for it however."
(and)
"There is no such thing as a problem without a gift for you in
its hand
(Richard Bach)



Peter Bennett December 13th 09 08:57 PM

Uniden 525 VHF and general question
 
On Sun, 13 Dec 2009 09:53:52 -0500, "Flying Pig"
wrote:

Hi, y'all,

I've been active on the cruiser's net here in Abaco, and this morning one of
the neighboring boats with a radio and antenna guru aboard called me after
to say that after about a minute of continuous transmission I got faint,
though still very clear. Another station chimed into the conversation to
say they had the same result. The original boat is right next to me, so
distance or atmospheric stuff was not a factor


If the volume drops, but the signal remains clear ("full quieting"),
then the problem is in the radio - in the microphone amplifier or
modulator. An antenna or coax problem would result in reduced signal
strength, which would cause the received signal to become noisy, but
would not affect the volume.


My antenna feed for the current installation runs in our bilge, and our
rudder post is currently in need of repacking, sending a constant stream of
water down the bilge/limberholes, where I expect there's at least one
connection. While that and any other connex are professionally done, I
expect some water COULD have penetrated. I'll have a look at that, first,
but would appreciate experienced input.


As another poster said, running cables in the bilge is a Seriously Bad
Idea. Although the reported problem doesn't implicate the cable, I'd
still like to get the cable out of the bilge, and well clear of any
possibility of continuous contact with water.



--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca

Wayne.B December 14th 09 04:48 AM

Uniden 525 VHF and general question
 
On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,


Agreed but you could have a bad connection which is heating up under
load.


cavelamb December 14th 09 05:24 AM

Uniden 525 VHF and general question
 
Wayne.B wrote:
On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,


Agreed but you could have a bad connection which is heating up under
load.



What Wayne said...

From what I've seen of "professional" work (unless you did it yourself and
know), it would be worth checking.

[email protected] December 14th 09 11:00 AM

Uniden 525 VHF and general question
 
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,


Agreed but you could have a bad connection which is heating up under
load.


Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.


Wilbur Hubbard December 14th 09 02:12 PM

Uniden 525 VHF and general question
 
"Wayne.B" wrote in message
...

Agreed but you could have a bad connection which is heating up under
load.



BINGO! They use one of those crap, 'slow burn' fuses. They heat up and the
extra impedance reduces the voltage. Get rid of it and put a higher amperage
rated, fast burn fuse in - end of problem.

Wilbur Hubbard



Goofball_star_dot_etal December 14th 09 03:15 PM

Uniden 525 VHF and general question
 
On 14/12/2009 11:00, wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,


Agreed but you could have a bad connection which is heating up under
load.


Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.


Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..

Goofball_star_dot_etal December 14th 09 03:35 PM

Uniden 525 VHF and general question
 
On 14/12/2009 15:28, wrote:
On Mon, 14 Dec 2009 15:15:48 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 11:00,
wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,

Agreed but you could have a bad connection which is heating up under
load.

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.


Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..


Nope, not an old wives tale at all.


Do you have a rational explanation then?

Wayne.B December 14th 09 03:46 PM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 15:35:08 +0000, goofball_star_dot_etal
wrote:

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..


Nope, not an old wives tale at all.


Do you have a rational explanation then?


I think the dog is peeing on the fire hydrant in an attempt at humor.

If not he's barking up the wrong tree.


Goofball_star_dot_etal December 14th 09 05:20 PM

Uniden 525 VHF and general question
 
On 14/12/2009 15:46, Wayne.B wrote:
On Mon, 14 Dec 2009 15:35:08 +0000, goofball_star_dot_etal
wrote:

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..

Nope, not an old wives tale at all.


Do you have a rational explanation then?


I think the dog is peeing on the fire hydrant in an attempt at humor.

If not he's barking up the wrong tree.


I think you mean "****ing into the wind"

Goofball_star_dot_etal December 14th 09 05:33 PM

Uniden 525 VHF and general question
 
On 14/12/2009 15:28, wrote:
On Mon, 14 Dec 2009 15:15:48 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 11:00,
wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,

Agreed but you could have a bad connection which is heating up under
load.

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.


Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..


Nope, not an old wives tale at all.


Work out the _magnitude_ of the change in electrical length of the
antenna due to water vapour for yourself.

http://www.kayelaby.npl.co.uk/genera...2_5/2_5_7.html




Goofball_star_dot_etal December 14th 09 05:50 PM

Uniden 525 VHF and general question
 
On 14/12/2009 17:48, wrote:
On Mon, 14 Dec 2009 17:33:33 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 15:28,
wrote:
On Mon, 14 Dec 2009 15:15:48 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 11:00,
wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,

Agreed but you could have a bad connection which is heating up under
load.

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..

Nope, not an old wives tale at all.


Work out the _magnitude_ of the change in electrical length of the
antenna due to water vapour for yourself.

http://www.kayelaby.npl.co.uk/genera...2_5/2_5_7.html



Oh, so you now acknowledge that it DOES make a difference... Okay!

Yes, but it is "**** all".

Brian Whatcott December 14th 09 05:57 PM

Uniden 525 VHF and general question
 
Wayne.B wrote:
On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.


Total loss: an often heard squawk about rubber duckies.
But it is not all that easy to maintain a 50 ohm impedance AND soak up
most of the transmit power with salt water in a coax - so a SWR meter
has merit IF and only IF it is suited to the frequency band in use. Most
hams use swr tests under 30 MHz.

Brian W

Goofball_star_dot_etal December 14th 09 06:30 PM

Uniden 525 VHF and general question
 
On 14/12/2009 18:24, wrote:
On Mon, 14 Dec 2009 17:50:24 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 17:48,
wrote:
On Mon, 14 Dec 2009 17:33:33 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 15:28,
wrote:
On Mon, 14 Dec 2009 15:15:48 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 11:00,
wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,

Agreed but you could have a bad connection which is heating up under
load.

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..

Nope, not an old wives tale at all.


Work out the _magnitude_ of the change in electrical length of the
antenna due to water vapour for yourself.

http://www.kayelaby.npl.co.uk/genera...2_5/2_5_7.html



Oh, so you now acknowledge that it DOES make a difference... Okay!

Yes, but it is "**** all".



Here is what I said:

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.


After much huffing, puffing and posturing, you now admit that
statement was absolutely correct.

Apology accepted.

Still not worked out how much the centre frequency shifts compared to
the typical 2Mhz bandwidth?

Wayne.B December 14th 09 06:32 PM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 11:57:59 -0600, brian whatcott
wrote:

it is not all that easy to maintain a 50 ohm impedance AND soak up
most of the transmit power with salt water in a coax


If the coax is soaking most of the transmit power it doesn't really
matter what impeadance it is. An SWR meter will still show no
reflected power, hence a 1:1 ratio.


Goofball_star_dot_etal December 14th 09 06:51 PM

Uniden 525 VHF and general question
 
On 14/12/2009 18:33, wrote:
On Mon, 14 Dec 2009 18:30:49 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 18:24,
wrote:
On Mon, 14 Dec 2009 17:50:24 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 17:48,
wrote:
On Mon, 14 Dec 2009 17:33:33 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 15:28,
wrote:
On Mon, 14 Dec 2009 15:15:48 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 11:00,
wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,

Agreed but you could have a bad connection which is heating up under
load.

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..

Nope, not an old wives tale at all.


Work out the _magnitude_ of the change in electrical length of the
antenna due to water vapour for yourself.

http://www.kayelaby.npl.co.uk/genera...2_5/2_5_7.html



Oh, so you now acknowledge that it DOES make a difference... Okay!

Yes, but it is "**** all".


Here is what I said:

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

After much huffing, puffing and posturing, you now admit that
statement was absolutely correct.

Apology accepted.

Still not worked out how much the centre frequency shifts compared to
the typical 2Mhz bandwidth?


Hey, you were wrong. Man up and move on.

Ask someone to work it out for you..

Bruce in alaska December 14th 09 07:47 PM

Uniden 525 VHF and general question
 
In article s.com,
"Wilbur Hubbard" wrote:

"Wayne.B" wrote in message
...

Agreed but you could have a bad connection which is heating up under
load.



BINGO! They use one of those crap, 'slow burn' fuses. They heat up and the
extra impedance reduces the voltage. Get rid of it and put a higher amperage
rated, fast burn fuse in - end of problem.

Wilbur Hubbard


Bull****.... Wilbur, you need to stick to stuff you know about....
as Peter Bennett pointed out, if the volume at the receiver dropped, but
the background noise didn't change, then the problem is in the
Modulating Deviation, not the Power Output.... This is FM not AM or
SSB.... In FM, once you exceed 12 db of Receiver Quieting the
Background Noise, changes are hardly perceptible, and in FM, the volume
produced in the receiver is directly proportional to the Modulation
Deviation of the Transmitter, until it exceeds the bandwidth of the
Receiver.

--
Bruce in alaska
add path after fast to reply

Bruce in alaska December 14th 09 07:51 PM

Uniden 525 VHF and general question
 
In article ,
wrote:

On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,


Agreed but you could have a bad connection which is heating up under
load.


Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.


Bull****..... I don't know where you got your learning, but you should
go back and ask for a REFUND...because you are talking thru your HAT....

I have been in the business for 40+ Years, and my Bird Wattmeter reads
the same at VHF Frequencies, in the Fog, or under then Baking Sun....

--
Bruce in alaska
add path after fast to reply

Bruce in alaska December 14th 09 08:07 PM

Uniden 525 VHF and general question
 
In article ,
cavelamb wrote:



What Wayne said...

From what I've seen of "professional" work (unless you did it yourself and
know), it would be worth checking.


I think this whole discussion ,is just about as funny a thread ,as I
have read, in months. If you don't have the right tools, and know what
you are doing, you just "****ing into the Wind"...

Yes, there are a few "Professionals" around who don't have Clue One, and
there are some that can't afford to buy the "Correct Tools" to do the
job.

If you want a real Marine Radioman, you need to pay for his Knowledge,
Service, and his Test Equipment.... or you can stumble around and learn
it yourself, after much Trial and Error.....

SaltyDog isn't even close to being a REAL Marine Radioman..... and his
attempt to sidetrack the discussion, by introducing a Trivial, and for
all Practical Purposes, irrelevant factor into the thread, is so silly
as to show a lack of intelligence in the field.

Oh well, folks can believe what they will, but it doesn't change the
FACTS... and the issues at hand.... Wilbur, Well we all know about
Wilbur... Enough said on that front....

--
Bruce in alaska
add path after fast to reply

Wayne.B December 14th 09 08:39 PM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 15:23:42 -0500, wrote:

Boy, somebody sure feels threatened.


I don't think you should take it personally. "Bruce in Alaska" has
more real world electronic experience, by far, than anyone else in
this group that I know of. I've been FCC licensed in one capacity or
another since 1957 and would defer to his judgement on just about
anything.


Vic Smith December 14th 09 08:53 PM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 15:39:49 -0500, Wayne.B
wrote:

On Mon, 14 Dec 2009 15:23:42 -0500, wrote:

Boy, somebody sure feels threatened.


I don't think you should take it personally. "Bruce in Alaska" has
more real world electronic experience, by far, than anyone else in
this group that I know of. I've been FCC licensed in one capacity or
another since 1957 and would defer to his judgement on just about
anything.


Bruce should give his opinion on the 214 versus the other cable
recently discussed. And whether mil spec means anything.
That's been questioned too, and I'm a bit confused.
Which is ok. Lucky for me I don't have a radio.

--Vic

Goofball_star_dot_etal December 14th 09 09:24 PM

Uniden 525 VHF and general question
 
On 14/12/2009 19:06, wrote:
On Mon, 14 Dec 2009 18:51:00 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 18:33,
wrote:
On Mon, 14 Dec 2009 18:30:49 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 18:24,
wrote:
On Mon, 14 Dec 2009 17:50:24 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 17:48,
wrote:
On Mon, 14 Dec 2009 17:33:33 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 15:28,
wrote:
On Mon, 14 Dec 2009 15:15:48 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 11:00,
wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,

Agreed but you could have a bad connection which is heating up under
load.

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..

Nope, not an old wives tale at all.


Work out the _magnitude_ of the change in electrical length of the
antenna due to water vapour for yourself.

http://www.kayelaby.npl.co.uk/genera...2_5/2_5_7.html



Oh, so you now acknowledge that it DOES make a difference... Okay!

Yes, but it is "**** all".


Here is what I said:

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

After much huffing, puffing and posturing, you now admit that
statement was absolutely correct.

Apology accepted.

Still not worked out how much the centre frequency shifts compared to
the typical 2Mhz bandwidth?

Hey, you were wrong. Man up and move on.

Ask someone to work it out for you..


Wussy!


It's about the same magnitude as shaving 2 thou off a 3ft. dipole, at
most, unless I made a mistake doing it in my head.. Besides, shouldn't
you tune for typical conditions not for Antarctica.

This link I came across might be of interest to some.
http://www.mike-willis.com/Tutorial/refraction.htm



Wilbur Hubbard December 14th 09 09:38 PM

Uniden 525 VHF and general question
 
"Bruce in alaska" wrote in message
...
In article s.com,
"Wilbur Hubbard" wrote:

"Wayne.B" wrote in message
...

Agreed but you could have a bad connection which is heating up under
load.



BINGO! They use one of those crap, 'slow burn' fuses. They heat up and
the
extra impedance reduces the voltage. Get rid of it and put a higher
amperage
rated, fast burn fuse in - end of problem.

Wilbur Hubbard


Bull****.... Wilbur, you need to stick to stuff you know about....
as Peter Bennett pointed out, if the volume at the receiver dropped, but
the background noise didn't change, then the problem is in the
Modulating Deviation, not the Power Output.... This is FM not AM or
SSB.... In FM, once you exceed 12 db of Receiver Quieting the
Background Noise, changes are hardly perceptible, and in FM, the volume
produced in the receiver is directly proportional to the Modulation
Deviation of the Transmitter, until it exceeds the bandwidth of the
Receiver.

--
Bruce in alaska
add path after fast to reply





You don't read too well, dude. Skippy said the volume of his 'transmission'
as heard by other listeners in nearby boats decreased noticeably after about
a minute.

So the problem is with Skippy's transmitter and not his receiver. If the
fuse heats up and the voltage drops and the "low voltage" indicator flashes
in the readout as Skippy indicated then that should tell you something. Duh!


Wilbur Hubbard



[email protected] December 14th 09 11:33 PM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 21:24:55 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 19:06, wrote:
On Mon, 14 Dec 2009 18:51:00 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 18:33,
wrote:
On Mon, 14 Dec 2009 18:30:49 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 18:24,
wrote:
On Mon, 14 Dec 2009 17:50:24 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 17:48,
wrote:
On Mon, 14 Dec 2009 17:33:33 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 15:28,
wrote:
On Mon, 14 Dec 2009 15:15:48 +0000, goofball_star_dot_etal
wrote:

On 14/12/2009 11:00,
wrote:
On Sun, 13 Dec 2009 23:48:25 -0500, Wayne.B
wrote:

On Sun, 13 Dec 2009 15:14:31 -0500, "Flying Pig"
wrote:

I'll try to find someone with a SWR meter here tomorrow morning before we
head out to our anchorage prior to going into the dock where we'll be
leaving Flying Pig, and give it a whirl.

One of the quirks of waterlogged coax is that it can exhibit a perfect
1:1 SWR ratio while transmitting little or no power because the signal
loss is so high that nothing gets reflected back to the SWR meter.

I also have the little cable and the mast-top antenna which proved the cable
at fault in the original explorations; it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel and
see if that cured it. That shortie, BTW, is LMR400, so should be fine for
the test. I don't expect it's got much in the way of SWR issues :{))


OK

As to sagging power, with an 880AH bank, I doubt that's a problem,

Agreed but you could have a bad connection which is heating up under
load.

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

Probably a Ham's old wives' tale. Your average VSWR meter is not very
accurate, although still quite useful. This leads to all sorts of BS.
The device I use cost more than my boat..

Nope, not an old wives tale at all.


Work out the _magnitude_ of the change in electrical length of the
antenna due to water vapour for yourself.

http://www.kayelaby.npl.co.uk/genera...2_5/2_5_7.html



Oh, so you now acknowledge that it DOES make a difference... Okay!

Yes, but it is "**** all".


Here is what I said:

Accurate SWR measurements also require clear dry conditions. An
overcast day will affect the readings.

After much huffing, puffing and posturing, you now admit that
statement was absolutely correct.

Apology accepted.

Still not worked out how much the centre frequency shifts compared to
the typical 2Mhz bandwidth?

Hey, you were wrong. Man up and move on.

Ask someone to work it out for you..


Wussy!


It's about the same magnitude as shaving 2 thou off a 3ft. dipole, at
most, unless I made a mistake doing it in my head.. Besides, shouldn't
you tune for typical conditions not for Antarctica.

This link I came across might be of interest to some.
http://www.mike-willis.com/Tutorial/refraction.htm


WIMP!


Goofball_star_dot_etal December 15th 09 12:25 AM

Uniden 525 VHF and general question
 
On 13/12/2009 20:14, Flying Pig wrote:


it will be easy for me to get a boat
buddy to listen while I read some story or something on a remote channel


Are you sure someone didn't just doze off last time you tried?

Bruce in alaska December 15th 09 01:03 AM

Uniden 525 VHF and general question
 
In article ,
Vic Smith wrote:

On Mon, 14 Dec 2009 15:39:49 -0500, Wayne.B
wrote:

On Mon, 14 Dec 2009 15:23:42 -0500, wrote:

Boy, somebody sure feels threatened.


I don't think you should take it personally. "Bruce in Alaska" has
more real world electronic experience, by far, than anyone else in
this group that I know of. I've been FCC licensed in one capacity or
another since 1957 and would defer to his judgement on just about
anything.


Bruce should give his opinion on the 214 versus the other cable
recently discussed. And whether mil spec means anything.
That's been questioned too, and I'm a bit confused.
Which is ok. Lucky for me I don't have a radio.

--Vic


Well, it would seem from all the previous posts that there is some
controversy about the recommended RF Coax for VHF Marine Installations
on various Vessel type.... Hmmmm... Well the answers are fairly
straight forward. It really depends on the installation. Small coax,
RG58 types, are alright for runs less than 10 Ft. For runs up 100Ft, RG8
Types Should be used. RG213 is better than RG8 or RG8 Foam Core Types,
due to Wx survivability, and Water Intrusion. The Price Difference
between RG213 and RG214, is usually NOT a cost effective for a NORMAL
Marine Installation, especially on a non-Commercial Vessels, where
budgets are tight. For Military Installations RG214 is the MINIMUM. On
commercial vessels up thru the 80's, RG213 was the standard, for runs
under 100 Ft. Then the newer coax types became available, like Belden
9913 & 9914. These were touted as the Poor Man's Heliax, and looking at
the Specs back then, they were. They are iffy for Marine Use, mostly
because of Bending Radius Specs, AND 9913 is a Hollow Core Type, so any
water intrusion issues ruins the cable. The LMR Stuff around NOW is
similar to the Beldon stuff, and has the same issues in that some is
Hollow Core and it has limitations in Bending Radiuses. For Runs longer
than 100 Ft. Heliax was the only thing used, in the Old Days. Modern
replacements have come along in the 80's and 90's that are better on
Price with similar Specs. In all this the Installation is the CRITICAL
Factor, NOT the coax type used. Water Tight Fittings and Connectors,
and getting the connectors INSTALLED CORRECTLY, is far more important
than 213 vs 214 issues. I kind of doubt that many of the folks that read
this Group even know how to install a PL-259 correctly. If you can do it
in less than three minutes, you don't have a clue. 99% of Vhf Antenna
System failures are do to installation issues, or CHEAP Antennas.

If your paying someone to look at you stuff, and he brings anything
aboard to check the VHF Antennas other than a Bird Wattmeter with the
appropriate Slugs, kick them off your boat as if they had Homeric Fever,
because they are Dufus's and will only cost you money. If you take your
radio to a Service Shop and the guy Doesn't have a Real Service Monitor,
Do NOT have them work on you rig. They are hacks and don't deserve your
business. Even IF these folks show up with ALL the Right Tools, that
doesn't mean they know what is what, it only means the have the Tools.
Watch them like a hawk. Ask Questions. Experience Shows, and any Good
Radioman will be more than happy to explain what he is doing and why,
AND will show you exactly what your problem IS and what it will take to
correct it.

I was always willing to show my customers everything they wanted to know
about their stuff, because they learned, and I didn't have to fix the
same stuff twice, for the same guy. I always had more business than I
could work, and I usually sent the Apprentice's down on the small stuff,
after they had worked with me, for six months, out in the field. I have
trained a lot of Marine Techs, over the years, and as we are a Dying
Breed, Many are doing other things in RF Communications than Marine work
these days. I used to be able to count the Quality Marine Radiomen on
the West Coast and North Pacific on two hands. NOW it is down to One
hand, and MF/HF Marine RadioMen... well I can think if just (4) that I
would take my rigs to, as this is now a Very Specialized Area of Marine
World, and mostly obsolete, due to TracPhones, Cellular, and GMDSS.
I am just happy to consult and be semi-reTired.

--
Bruce in alaska
add path after fast to reply

Brian Whatcott December 15th 09 01:04 AM

Uniden 525 VHF and general question
 
Wayne.B wrote:
On Mon, 14 Dec 2009 11:57:59 -0600, brian whatcott
wrote:

it is not all that easy to maintain a 50 ohm impedance AND soak up
most of the transmit power with salt water in a coax


If the coax is soaking most of the transmit power it doesn't really
matter what impeadance it is. An SWR meter will still show no
reflected power, hence a 1:1 ratio.


Hmmm.. that sounds a little doubtful to me. If a coax gets a short,
it reflects plenty before the short. If a coax gets an open, it
reflects plenty before the open.... If a coax gets a 50 ohm lossy
resistance, then it soaks up all the power with no reflection.

That's where I'm coming from...

B

Bruce in alaska December 15th 09 01:16 AM

Uniden 525 VHF and general question
 
In article s.com,
"Wilbur Hubbard" wrote:

"Bruce in alaska" wrote in message
...
In article s.com,
"Wilbur Hubbard" wrote:

"Wayne.B" wrote in message
...

Agreed but you could have a bad connection which is heating up under
load.



BINGO! They use one of those crap, 'slow burn' fuses. They heat up and
the
extra impedance reduces the voltage. Get rid of it and put a higher
amperage
rated, fast burn fuse in - end of problem.

Wilbur Hubbard


Bull****.... Wilbur, you need to stick to stuff you know about....
as Peter Bennett pointed out, if the volume at the receiver dropped, but
the background noise didn't change, then the problem is in the
Modulating Deviation, not the Power Output.... This is FM not AM or
SSB.... In FM, once you exceed 12 db of Receiver Quieting the
Background Noise, changes are hardly perceptible, and in FM, the volume
produced in the receiver is directly proportional to the Modulation
Deviation of the Transmitter, until it exceeds the bandwidth of the
Receiver.

--
Bruce in alaska
add path after fast to reply





You don't read too well, dude. Skippy said the volume of his 'transmission'
as heard by other listeners in nearby boats decreased noticeably after about
a minute.

So the problem is with Skippy's transmitter and not his receiver. If the
fuse heats up and the voltage drops and the "low voltage" indicator flashes
in the readout as Skippy indicated then that should tell you something. Duh!


Wilbur Hubbard


Actually it is YOU, Wilbur, who can't read, or does NOT understand the
technology that you are talking about. The Deviation of the Modulator in
Skip's Transmitter is EXACTLY what we are DISCUSSING and the VOLUME of
Skips signal has absolutely NOTHING TO DO with the Power OUT of his
Transmitter, but everything to do with the Modulation Deviation of his
Transmitter.... This is why a One WAtt Handheld sounds just as loud, in
a receiver, as a 25 watt radio, when both signals are above the 12db
Quieting Threshold of that receiver.... You just show your ignorance,
when you spout off about things you have no Clue about....

--
Bruce in alaska
add path after fast to reply

[email protected] December 15th 09 01:33 AM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 16:03:52 -0900, Bruce in alaska
wrote:


Well, it would seem from all the previous posts that there is some
controversy about the recommended RF Coax for VHF Marine Installations
on various Vessel type.... Hmmmm... Well the answers are fairly
straight forward. It really depends on the installation. Small coax,
RG58 types, are alright for runs less than 10 Ft. For runs up 100Ft, RG8
Types Should be used. RG213 is better than RG8 or RG8 Foam Core Types,
due to Wx survivability, and Water Intrusion. The Price Difference
between RG213 and RG214, is usually NOT a cost effective for a NORMAL
Marine Installation, especially on a non-Commercial Vessels, where
budgets are tight. For Military Installations RG214 is the MINIMUM. On
commercial vessels up thru the 80's, RG213 was the standard, for runs
under 100 Ft.


Thanks Bruce

Wayne.B December 15th 09 01:43 AM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 19:04:12 -0600, brian whatcott
wrote:

If a coax gets a 50 ohm lossy
resistance, then it soaks up all the power with no reflection.

That's where I'm coming from...


And so am I. A long length of lossy cable will show no reflected
power which translates to an SWR of 1:1.


Brian Whatcott December 15th 09 05:33 AM

Uniden 525 VHF and general question
 
Wayne.B wrote:
On Mon, 14 Dec 2009 19:04:12 -0600, brian whatcott
wrote:

If a coax gets a 50 ohm lossy
resistance, then it soaks up all the power with no reflection.

That's where I'm coming from...


And so am I. A long length of lossy cable will show no reflected
power which translates to an SWR of 1:1.


Then we are agreed that a SWR reading can be misleading in this
circumstance.

Brian W

Wayne.B December 15th 09 06:39 AM

Uniden 525 VHF and general question
 
On Mon, 14 Dec 2009 23:33:45 -0600, brian whatcott
wrote:

Wayne.B wrote:
On Mon, 14 Dec 2009 19:04:12 -0600, brian whatcott
wrote:

If a coax gets a 50 ohm lossy
resistance, then it soaks up all the power with no reflection.

That's where I'm coming from...


And so am I. A long length of lossy cable will show no reflected
power which translates to an SWR of 1:1.


Then we are agreed that a SWR reading can be misleading in this
circumstance.


It depends on your expectations. An SWR meter is not the right tool
for evaluating the condition/quality of coax. For that you need a
stable signal source, a dummy load and a good watt meter like a Bird.
The ratio of power in vs power out translates to the loss in dbs with
a little calculation.

Brian Whatcott December 15th 09 12:06 PM

Uniden 525 VHF and general question
 
Bruce in alaska wrote:

If your paying someone to look at you stuff, and he brings anything
aboard to check the VHF Antennas other than a Bird Wattmeter with the
appropriate Slugs, kick them off your boat as if they had Homeric Fever,
because they are Dufus's and will only cost you money. /snip/


If you Google "VHF", sure enough you find entries about Viral
Hemorrhagic Fevers (VHFs) like Ebola, Dengue and Marburg. :-)

Bird Wattmeters are a trusted article no doubt.
If you come up against a strangely absorptive coax, it might just stay
absorptive on the Bird, even with the load disconnected. That should
provide a clue.

Brian W

Goofball_star_dot_etal December 15th 09 12:34 PM

Uniden 525 VHF and general question
 
On 15/12/2009 12:06, brian whatcott wrote:
Bruce in alaska wrote:

If your paying someone to look at you stuff, and he brings anything
aboard to check the VHF Antennas other than a Bird Wattmeter with the
appropriate Slugs, kick them off your boat as if they had Homeric
Fever, because they are Dufus's and will only cost you money. /snip/



I can get by with a Hewlett Packard 8754A and Site Master S331D.

http://www.us.anritsu.com/products/S...QQSidZ595.aspx

If you Google "VHF", sure enough you find entries about Viral
Hemorrhagic Fevers (VHFs) like Ebola, Dengue and Marburg. :-)

Bird Wattmeters are a trusted article no doubt.
If you come up against a strangely absorptive coax, it might just stay
absorptive on the Bird, even with the load disconnected. That should
provide a clue.

Brian W



Wilbur Hubbard December 15th 09 09:03 PM

Uniden 525 VHF and general question
 
"Bruce in alaska" wrote in message
...
In article s.com,
"Wilbur Hubbard" wrote:

"Bruce in alaska" wrote in message
...
In article s.com,
"Wilbur Hubbard" wrote:

"Wayne.B" wrote in message
...

Agreed but you could have a bad connection which is heating up under
load.



BINGO! They use one of those crap, 'slow burn' fuses. They heat up
and
the
extra impedance reduces the voltage. Get rid of it and put a higher
amperage
rated, fast burn fuse in - end of problem.

Wilbur Hubbard

Bull****.... Wilbur, you need to stick to stuff you know about....
as Peter Bennett pointed out, if the volume at the receiver dropped,
but
the background noise didn't change, then the problem is in the
Modulating Deviation, not the Power Output.... This is FM not AM or
SSB.... In FM, once you exceed 12 db of Receiver Quieting the
Background Noise, changes are hardly perceptible, and in FM, the volume
produced in the receiver is directly proportional to the Modulation
Deviation of the Transmitter, until it exceeds the bandwidth of the
Receiver.

--
Bruce in alaska
add path after fast to reply





You don't read too well, dude. Skippy said the volume of his
'transmission'
as heard by other listeners in nearby boats decreased noticeably after
about
a minute.

So the problem is with Skippy's transmitter and not his receiver. If the
fuse heats up and the voltage drops and the "low voltage" indicator
flashes
in the readout as Skippy indicated then that should tell you something.
Duh!


Wilbur Hubbard


Actually it is YOU, Wilbur, who can't read, or does NOT understand the
technology that you are talking about. The Deviation of the Modulator in
Skip's Transmitter is EXACTLY what we are DISCUSSING and the VOLUME of
Skips signal has absolutely NOTHING TO DO with the Power OUT of his
Transmitter, but everything to do with the Modulation Deviation of his
Transmitter.... This is why a One WAtt Handheld sounds just as loud, in
a receiver, as a 25 watt radio, when both signals are above the 12db
Quieting Threshold of that receiver.... You just show your ignorance,
when you spout off about things you have no Clue about....

--
Bruce in alaska





PKB! You're the one who's clueless. I happen to own one of those crap
radios myself and I have discovered all their foibles and failings. You are
just operating on theory and your theory is little more than an uninformed
guess. So take a hike. When you get some experience with this particular
radio perhaps you can return then.

Besides, anybody living in Alaska where he gets is ass frozen off most of
the year can't be too bright in the first place.


Wilbur Hubbard



Vic Smith December 15th 09 09:29 PM

Uniden 525 VHF and general question
 
On Tue, 15 Dec 2009 16:03:54 -0500, "Wilbur Hubbard"
wrote:



Actually it is YOU, Wilbur, who can't read, or does NOT understand the
technology that you are talking about. The Deviation of the Modulator in
Skip's Transmitter is EXACTLY what we are DISCUSSING and the VOLUME of
Skips signal has absolutely NOTHING TO DO with the Power OUT of his
Transmitter, but everything to do with the Modulation Deviation of his
Transmitter.... This is why a One WAtt Handheld sounds just as loud, in
a receiver, as a 25 watt radio, when both signals are above the 12db
Quieting Threshold of that receiver.... You just show your ignorance,
when you spout off about things you have no Clue about....

--
Bruce in alaska





PKB! You're the one who's clueless. I happen to own one of those crap
radios myself and I have discovered all their foibles and failings. You are
just operating on theory and your theory is little more than an uninformed
guess. So take a hike. When you get some experience with this particular
radio perhaps you can return then.

I'm given to understand that the Bruce is an expert in these matters.

Besides, anybody living in Alaska where he gets is ass frozen off most of
the year can't be too bright in the first place.

No reason to drag Sarah Palin into a radio discussion.
You should be ashamed of yourself.

--Vic

Goofball_star_dot_etal December 15th 09 10:53 PM

Uniden 525 VHF and general question
 
On 13/12/2009 14:53, Flying Pig wrote:
Hi, y'all,

I've been active on the cruiser's net here in Abaco, and this morning one of
the neighboring boats with a radio and antenna guru aboard called me after
to say that after about a minute of continuous transmission I got faint,
though still very clear. Another station chimed into the conversation to
say they had the same result. *******The original boat is right next to me,**** so
distance or atmospheric stuff was not a factor


Not a good test as his receiver will be grossly overloaded. Could be the
result frequency drift resulting in the IF of the receiver moving off
the linear part of the discriminator. Although I still favour the idea
that the listener fell asleep. I myself have reached a semi comatose
state reading your posts, many times..


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