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Default Ground Plane for aluminum boat

Bob wrote:
snip
Here is a bit of trivia for you.
Who welded the name on the CV 10 while she was at the Bremerton
shipyard geting refit for jets and Korea?


Easy, it was some yardbird.

Jack
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Default Ground Plane for aluminum boat

Bob wrote in news:1183654729.967270.60960
@q69g2000hsb.googlegroups.com:


You should see the ham club's metal boat....the USS Yorktown (CV-10)
Naval Museum at Patriot's Point in Charleston. Their ground is a WHOLE
AIRCRAFT CARRIER! Signal reports read like we were a 50KW broadcast
flamethrower...(c; Club callsign is WA4USN (United States Navy), of
course...

Larry W4CSC....for Charleston South Carolina


Hey Larry,

Here is a bit of trivia for you.
Who welded the name on the CV 10 while she was at the Bremerton
shipyard geting refit for jets and Korea?


Bob



You did....but I wasn't going to bring it up about the fire....(c;

Larry
--
While in Mexico, I didn't have to press 1 for Spanish.

It just isn't fair.

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Default Ground Plane for aluminum boat

On Jul 5, 6:08 pm, Larry wrote:
Bob wrote in news:1183654729.967270.60960
@q69g2000hsb.googlegroups.com:







You should see the ham club's metal boat....the USS Yorktown (CV-10)
Naval Museum at Patriot's Point in Charleston. Their ground is a WHOLE
AIRCRAFT CARRIER! Signal reports read like we were a 50KW broadcast
flamethrower...(c; Club callsign is WA4USN (United States Navy), of
course...


Larry W4CSC....for Charleston South Carolina


Hey Larry,


Here is a bit of trivia for you.
Who welded the name on the CV 10 while she was at the Bremerton
shipyard geting refit for jets and Korea?


Bob


You did....but I wasn't going to bring it up about the fire....(c;

Larry



Naa, it was my mom.

She also built Liberty ships in WW2 at the JA Jones yard in GA. Her
name is Rebecca. Just a litle triva for the guys back on the Yorktown.
Bob





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Default Ground Plane for aluminum boat

Bob wrote in news:1183703990.019847.151540
@i13g2000prf.googlegroups.com:

Naa, it was my mom.

She also built Liberty ships in WW2 at the JA Jones yard in GA. Her
name is Rebecca. Just a litle triva for the guys back on the Yorktown.
Bob



Next time I'm in the Yorktown office, I'll tell them. They love those
stories....(c;

Tell Mom she's STILL a great ship....

Larry
--
While in Mexico, I didn't have to press 1 for Spanish.
While in Iran, I didn't have to press 1 for Farsi, either.
It just isn't fair.

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Default Ground Plane for aluminum boat

Bruce in Alaska wrote:



Hmmmm, You say you have an Alumiunum Hull, that you would like to use
as an RF Ground for your MF/HF AutoAntenna Tuner, at least I assume it
is an Autotuner. Why are you using Copper foil in the First Place?
Just how far is the AutoTuner mounted from the Aluminum that you would
be using for RF Ground? I suspect that maybe your Autotuner is mounted
ON the aluminum, that is part of the Hull, or at least welded to the
the Hull, in which case a two inch hunk of #12 Copper, or if you prefer
Aluminum, Wire, from the Ground Stud, on the Autotuner, to one of the
Mounting bolts of the Autotuner, will be MORE than enough to do the job.
Now make sure that you Antenna Lead coming of the Antenna Port of your
Autotuner, is NOT tyewrapped to ANY portion of the Aluminum Hull, or
any portion of anything that is Welded or Grounded to the aluminum
Hull. Keep you antenna at least 6 Inches away from ANY Grounded
Surface, for its entire run, to the far end of the Antenna System

There....that should work just "Jim Dandy", or Spiffy as the case may be

Bruce in alaska


That seems to me to call for a 12" dia hole in the pilothouse top and
a corresponding maybe 14" dia feed-through. Is that the case? Most
commercially available seem to be about 3-4" dia max.

Thanks,
Michael Porter

Michael Porter Marine Design
mporter at mp-marine dot com
www.mp-marine.com

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Default Ground Plane for aluminum boat

In article ,
Michael Porter wrote:

Bruce in Alaska wrote:



Hmmmm, You say you have an Alumiunum Hull, that you would like to use
as an RF Ground for your MF/HF AutoAntenna Tuner, at least I assume it
is an Autotuner. Why are you using Copper foil in the First Place?
Just how far is the AutoTuner mounted from the Aluminum that you would
be using for RF Ground? I suspect that maybe your Autotuner is mounted
ON the aluminum, that is part of the Hull, or at least welded to the
the Hull, in which case a two inch hunk of #12 Copper, or if you prefer
Aluminum, Wire, from the Ground Stud, on the Autotuner, to one of the
Mounting bolts of the Autotuner, will be MORE than enough to do the job.
Now make sure that you Antenna Lead coming of the Antenna Port of your
Autotuner, is NOT tyewrapped to ANY portion of the Aluminum Hull, or
any portion of anything that is Welded or Grounded to the aluminum
Hull. Keep you antenna at least 6 Inches away from ANY Grounded
Surface, for its entire run, to the far end of the Antenna System

There....that should work just "Jim Dandy", or Spiffy as the case may be

Bruce in alaska


That seems to me to call for a 12" dia hole in the pilothouse top and
a corresponding maybe 14" dia feed-through. Is that the case? Most
commercially available seem to be about 3-4" dia max.

Thanks,
Michael Porter

Michael Porter Marine Design
mporter at mp-marine dot com
www.mp-marine.com


Only if you mount the Sealed Autotuner inside the Wheelhouse, rather
than outside on the Top, or Rear Wall under the DripLip. If 4" is the
biggest FeedTru you have ever seen, then you don't get out much, and see
commercial Marine MF/HF Installations aboard SOLAS Required Vessels.
The "Real Question" in most of these non-commercial Installations has
always been, "Do you want it to WORK, or do you want it to LOOK Good?".
Most say "Work", but a few say "LOOK Good", then at that point, you get
what you pay for.......

Bruce in alaska
--
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Default Ground Plane for aluminum boat

Thanks! The idea is to make it work right.

Michael Porter


Bruce in Alaska wrote:

In article ,
Michael Porter wrote:

Bruce in Alaska wrote:



Hmmmm, You say you have an Alumiunum Hull, that you would like to use
as an RF Ground for your MF/HF AutoAntenna Tuner, at least I assume it
is an Autotuner. Why are you using Copper foil in the First Place?
Just how far is the AutoTuner mounted from the Aluminum that you would
be using for RF Ground? I suspect that maybe your Autotuner is mounted
ON the aluminum, that is part of the Hull, or at least welded to the
the Hull, in which case a two inch hunk of #12 Copper, or if you prefer
Aluminum, Wire, from the Ground Stud, on the Autotuner, to one of the
Mounting bolts of the Autotuner, will be MORE than enough to do the job.
Now make sure that you Antenna Lead coming of the Antenna Port of your
Autotuner, is NOT tyewrapped to ANY portion of the Aluminum Hull, or
any portion of anything that is Welded or Grounded to the aluminum
Hull. Keep you antenna at least 6 Inches away from ANY Grounded
Surface, for its entire run, to the far end of the Antenna System

There....that should work just "Jim Dandy", or Spiffy as the case may be

Bruce in alaska


That seems to me to call for a 12" dia hole in the pilothouse top and
a corresponding maybe 14" dia feed-through. Is that the case? Most
commercially available seem to be about 3-4" dia max.

Thanks,
Michael Porter

Michael Porter Marine Design
mporter at mp-marine dot com
www.mp-marine.com


Only if you mount the Sealed Autotuner inside the Wheelhouse, rather
than outside on the Top, or Rear Wall under the DripLip. If 4" is the
biggest FeedTru you have ever seen, then you don't get out much, and see
commercial Marine MF/HF Installations aboard SOLAS Required Vessels.
The "Real Question" in most of these non-commercial Installations has
always been, "Do you want it to WORK, or do you want it to LOOK Good?".
Most say "Work", but a few say "LOOK Good", then at that point, you get
what you pay for.......

Bruce in alaska


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