Boat Radios, or Why I am not an Engineer
 

In article ,
Gene Kearns wrote:

GMDSS is taking that general direction, but makes SSB and satellite
phones look inexpensive. DSC might take care of some of those concerns
if anybody would use it.... (but it isn't legal ship-to-shore.)

How is that?
Eg in Spain the MRCC is in the middle of the land, why should you not be
allowed to call it via DSC?
see eg http://www.kloth.net/radio/dsc.php

DSC replaced the radio watch both on VHF and MF/HF - with the exception
of countries where DSC has not been fully deployed.
Most unfortunately the US is lagging some 10 years behind Europe in this
respect. In Great Britain for example DSC has been fully operational in
1999.

Because of the automated reception, and alarming functions, GMDSS is
much more likely to get you help immediately.

GMDSS comprises several systems, VHF/MF/HF DSC calls are just a part of
it, EPIRBs, SART, Inmarsat-C functions are other parts of it.

Marc

--
remove bye and from mercial to get valid e-mail
http://www.heusser.com

Boat Radios, or Why I am not an Engineer
 

wrote in message
oups.com...

Hmmmm...

Suprised that "Larry" hasn't yet jumped in on this particular
thread. When it comes to communications he is one of our main
squeezes... so to speak. (smile)

73

Bill (N6TGC) (Who is watching Southern California go up in flames)

Anacapa Isle Marina
Channel Islands Harbor
Oxnard, California



Drove though their yesterday and spent a night in Solvang. Smoke did not
really clear until Pismo Beach.

Boat Radios, or Why I am not an Engineer
 

"Short Wave Sportfishing" wrote in message
...
On Tue, 23 Oct 2007 17:44:19 -0400, Gene Kearns
wrote:

Yeah..... but nothing (that I know of) that is available in your area.
Everybody: Check this link out and send them your location. The more
interest generated, the more quickly they will add coverage...
http://www.seasmartvhf.com/about/index.html

Notice the engines on those boats?

http://www.seasmartvhf.com/subscription/index.html

WHOO HOO!!!

why 3? Not enough power in 1 or 2, or do they require 2 spares?

Boat Radios, or Why I am not an Engineer
 

"Short Wave Sportfishing" wrote in message
...

On Tue, 23 Oct 2007 12:17:22 -0400, "Eisboch"
wrote:


It would seem that the next logical evolution for VHF communications is
for
it to go to a totally digital format, rather than the analog system it
remains. Digital will allow more available bandwidth for each frequency,
would open up the possibility of full duplex communications and would
provide clearer communications.

NNNOOOOOOOOO!!!!!

God save us from digital everything.

Give me good old analog communications any day.

With tubes. :)

~~ mutter - digital - phooey ~~


I agree that some things work or sound better using old vacuum tubes and
analog amps. I have a Mesa Boogie guitar amp that has a sound that no solid
state amp can reproduce. However ....

I was just thinking the other day about how quickly technology(particularly
in the various communication areas) has evolved over the past 50, 20 and
even 10 years, primarily due to the conversion to digital systems ... and I
am not referring simply to computers. HD TV, HD radio (even AM), DVD, CD,
cell phones, GPS, .... the list goes on and on.

And, as fiberoptic lines expand and replace cable lines, the digital age
will grow even more.

We've come a long way since I worked on a basic digital communications
system .... FSK with 8 bit teletype machines, clacking away, mechanically
generating a digital code.

Eisboch

Boat Radios, or Why I am not an Engineer
 

"Short Wave Sportfishing" wrote in message
...


I'd still lke to know why you think duplex is so important.

Try talking to my wife on a semi-duplex cell phone someday and you will
understand.

Eisboch

Boat Radios, or Why I am not an Engineer
 

"Tim" wrote in message
oups.com...
On Oct 23, 10:29 am, HK wrote:
So, I was thinking, what with all the technological advances in
communications, why are we still stuck with VHF radios on our boats?
The limitations of VHF radio are obvious to all of us, so there's no
need to repeat them here. And I'm suggesting a move up to SSB or
satellite telephones.

Surely, there is a better way to handle boat to boat or boat to shore
communciations, with features like duplex, much greater range, less
static.

Right?

Well, I always thought these did a pretty good job.


http://www.usswisconsin.org/Pictures...t%2024inc..JPG


Ah, yet another example of digital communications.

Eisboch

Boat Radios, or Why I am not an Engineer
 

On Wed, 24 Oct 2007 03:21:21 -0400, "Eisboch"
wrote:


"Short Wave Sportfishing" wrote in message
.. .


I'd still lke to know why you think duplex is so important.

Try talking to my wife on a semi-duplex cell phone someday and you will
understand.

If Mrs. E is anything like Mrs. Wave, you aren't going to say anything
anyway which proves the point. You don't need duplex. :)

Boat Radios, or Why I am not an Engineer
 

On Tue, 23 Oct 2007 20:50:08 -0400, Gene Kearns
wrote:

On Wed, 24 Oct 2007 00:37:16 GMT, Short Wave Sportfishing penned the
following well considered thoughts to the readers of rec.boats:

On Tue, 23 Oct 2007 17:44:19 -0400, Gene Kearns
wrote:

Yeah..... but nothing (that I know of) that is available in your area.
Everybody: Check this link out and send them your location. The more
interest generated, the more quickly they will add coverage...
http://www.seasmartvhf.com/about/index.html

Notice the engines on those boats?

http://www.seasmartvhf.com/subscription/index.html

WHOO HOO!!!

Geeze Louise...... do they have to put three engines on one boat just
to make sure they get back?

Jealous.

Boat Radios, or Why I am not an Engineer
 

On Tue, 23 Oct 2007 23:26:24 -0700, "Calif Bill"
wrote:


"Short Wave Sportfishing" wrote in message
.. .
On Tue, 23 Oct 2007 17:44:19 -0400, Gene Kearns
wrote:

Yeah..... but nothing (that I know of) that is available in your area.
Everybody: Check this link out and send them your location. The more
interest generated, the more quickly they will add coverage...
http://www.seasmartvhf.com/about/index.html

Notice the engines on those boats?

http://www.seasmartvhf.com/subscription/index.html

WHOO HOO!!!

why 3? Not enough power in 1 or 2, or do they require 2 spares?

Yeah, yeah, yeah...

Ha, ha...

Boat Radios, or Why I am not an Engineer
 

On Tue, 23 Oct 2007 20:51:43 -0400, Gene Kearns
wrote:

On Wed, 24 Oct 2007 00:32:21 GMT, Short Wave Sportfishing penned the
following well considered thoughts to the readers of rec.boats:

Why would you want duplex?

Uh? He likes to talk while the other party is talking?

There is nothing wrong with simplex operation - you just need to keep
your conversations to a minimum and short.

This whole thing about duplex is silly - duplex doesn't give you any
advantage at all and besides - technically, VHF isn't for conversation
- theoritically.