Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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  #41   Report Post  
Lew Hartswick
 
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Ted Edwards wrote:
Gunner wrote:

frown on antennas other than TV. So it leaves out a long wire antenna.
My TV antenna (no cable in the park) is about 12' to the yagi.



Make an insulated base for the yagi pole and put insulators in the guy
wires. Now you've got a 12' whip antena. Should work pretty good.

Ted

I was going to suggest this but thought I'd read the rest before doing
so. :-) If it was for a specific freq it could even still be grounded
at the base and fed with a Gamma match. :-)
...lew...
  #42   Report Post  
jim rozen
 
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In article , Ed Huntress says...

That's true, but it doesn't address the same issue. The point was that
there's no inherent signal strength advantage in having a vertical or a
horizontal antenna (in terms of polarization) for HF, short-wave reception,
nor for BCB at night.


I think we're saying the same thing here. He should go with the
kind of antenna that fits his need for stealth, be it vertical,
horizontal, or loop.

BTW, I found my old antenna handbook, and a bit about why longer antennas
typically pick up more signal than resonant antennas.


Heh. Somebody had a birthday recently, and netted a copy of "The Antenna
Book" by the ARRL. This may be the same book you are referring to.
It's great.

Jim


--
==================================================
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  #43   Report Post  
Gunner
 
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On Tue, 05 Apr 2005 16:38:36 GMT, Bart Bailey wrote:

In posted on
Tue, 05 Apr 2005 16:16:13 GMT, Gunner wrote: Begin

Im sure you are aware that Im quite good at research on the internet,
and did a fair amount of that, before posting my question. But there
are often tricks that individuals have come up that might be
appropriate


It's such a common old ruse that maybe no one thought to mention it, but
the PVC flagpole (wire inside) might be a go if you fly the appropriate
flags from it.


In this RV park..the only flag that wouldnt get stolen is the Mexican
flag. Few of my neighbors are english speakers.

But its an idea.

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"
  #44   Report Post  
Gunner
 
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On Tue, 05 Apr 2005 18:28:59 -0400, North wrote:

On Tue, 05 Apr 2005 16:16:13 GMT, Gunner
said:



Im sure you are aware that Im quite good at research on the internet,
and did a fair amount of that, before posting my question. But there
are often tricks that individuals have come up that might be
appropriate


LOL...Yeah Gunner, I know you google, etc...
Which leads me to believe that you posted this as a spark (some on
topic for a change), there are a half a dozen site with plans for
simple magnetic (Ferrit bar and magnitic wire, you know the crap they
call an antenna inside an el-cheapo transister radio) which is most
likely what you'll end upmaking in the long run with your requirements
for 'low profile' Hell Gunner, just whip up one of those damn magnetic
antenns, make sure you've got plenty of lead wire, and simply set the
damn thing in which ever window works best for the station you are
tuning to. You can't get no lower profile then that and expect to
actually pick up anything., Heck, with a say 24 inch piece of ferrit,
wrap it with around 30 feet or so of magnetic wire. You can even add a
tuning cap if you want to get fancy, but as a general coverage antenna
you don't need all that for just receiving, YMMV. You can mount this
type of antenna in the window(s) either flat or top side.

If you need to be lower profile then the above, might I suggest a coat
hanger.

n.


I really want to listen to the SW bands. I think Ill dig into my
Stuff when finally go home this weekend and see what Ive got stashed
in my comm gear bins. I like the idea of the wire on standoffs around
the edge of the roof. Attaching them is going to be problematic.

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"
  #45   Report Post  
Gunner
 
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On Wed, 06 Apr 2005 00:23:42 GMT, Howard Eisenhauer
wrote:

Gunner, can you get away with a CB antenna? You really don't need a
lot of antenna for SW reception, a moderate sized mirror mount whip
should work pretty well & I'm sure you wouldn't be the only one in the
park sporting one.

Howard.


Actually..the only one in this park is on my truck. I do have a spare
K40 48" whip somewhere around the homestead, and Ill dig it out this
weekend and make up a mount and run some coax and give it a try.

Im sure Im going to need a power line filter though. The radio may be
run off 12vt dc, or line, or 8 D batteries. I may simply use a DC
supply and see if that kills some of the noise from the puter.

Gunner


On Tue, 05 Apr 2005 10:01:20 GMT, Gunner
wrote:

Over the weekend, I stumbled into a Panasonic RF-4800 general
communications receiver. It looks like it just came out of the box.
Mint+.

I have some issues that perhaps some of you can help with.

First of all, as some of you know, I spend most of the week working
out of an RV in an RV park. The park rules are such that they really
frown on antennas other than TV. So it leaves out a long wire antenna.
My TV antenna (no cable in the park) is about 12' to the yagi. So I
have a mounting height issue..the Slinky trick is out.

Anyone got a good suggestion for a low profile antenna that will cover
broadcast to 31 mhz? Vertically polarized, or
horizontally..horizontal would be best. The RV has a surface aprox 7'
wide by 20' long.

loop antennas are out. No way to turn it from inside and are a bit
high profile.

Second big question. The only place to put this receiver is within 3
feet of my computer. So Im getting freaking huge birdies all over the
spectrum with the puter/monitor turned on.

The receiver has a 50ohm Pl259 coax connector, as well as a binding
post for a long wire. Plus a binding post for AM broadcast and a
third for FM broadcast.

The RV itself is a damned good Faraday cage. Aluminum siding, aluminum
window frames and screen. Even the local stations fade to zip when
the door is closed. I have to leave the cell phone near a window to
work. So the antenna has to be external. Shrug.

Anyone got any suggestions? Ive got a chunk of wire tossed over the
roof at the moment, but tis not particularly effective.

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"


Rule #35
"That which does not kill you,
has made a huge tactical error"


  #46   Report Post  
Ed Huntress
 
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"jim rozen" wrote in message
...
In article , Ed Huntress says...

That's true, but it doesn't address the same issue. The point was that
there's no inherent signal strength advantage in having a vertical or a
horizontal antenna (in terms of polarization) for HF, short-wave

reception,
nor for BCB at night.


I think we're saying the same thing here. He should go with the
kind of antenna that fits his need for stealth, be it vertical,
horizontal, or loop.


Exactly. They'll have different gains and different angles of reception,
which will produce different levels of performance, but polarization is not
a factor when you're dealing with sky waves.

The primary goals should be to get some wire out in the clear and get it
away from sources of electrical noise. If you have a lot of noise, making
the wire longer should help, up to a point.


BTW, I found my old antenna handbook, and a bit about why longer antennas
typically pick up more signal than resonant antennas.


Heh. Somebody had a birthday recently, and netted a copy of "The Antenna
Book" by the ARRL. This may be the same book you are referring to.
It's great.


Mine is the 1968 edition. BTW, our recent discussion got me interested in
getting my license again, so I went out last week and took the Tech and
General class tests. I got my General-class call today but it's a 2-over-3:
KC2NZT. I'll go after the Extra and see if I can get a shorter call.

Also BTW, an antenna that a friend and I shared in college, which we used
for both transmitting and receiving, was a twin-lead vertical combined with
the TV antenna mast, for a three-wire vertical in total. We ran the
twin-lead up but didn't connect it to the TV antenna terminals. Instead, we
soldered the two wires together about a foot below the TV antenna, and then
soldered them to the mast. We soldered all three together again at the
bottom of the mast. Maybe we got some top-hat capacitance out of the TV
antenna. g

Anyway, it worked pretty well. We had a commercial antenna tuner (Drake? I
forget), and we could load it on just about any band and get out fairly
effectively, of course better on some bands than others.

It was like Gunner's situation: almost any TV antenna was acceptable there,
but nothing else was.

--
Ed Huntress


  #47   Report Post  
Pete & sheri
 
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Would the park allow you to have a patio umbrella? Maybe you could
attach a loop antenna to the underside of it. I wouldn't be surprised
if you could get away with a 20' square umbrella.

Pete Stanaitis

  #48   Report Post  
North
 
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On Tue, 05 Apr 2005 23:22:56 -0500, Pete & sheri
said:



Would the park allow you to have a patio umbrella? Maybe you could
attach a loop antenna to the underside of it. I wouldn't be surprised
if you could get away with a 20' square umbrella.

Pete Stanaitis


I'm quite sure that gunner had to block up his RV and remove the
wheels/tires to:

A) keep his RV from getting stolen

B) keeps his RV's wheels and tires from getting stolen.

How long do you think gunner would remain the owner of such an
umbrella ? Minutes ? hours ? day or two ? Remember the universal
trailer park law "If it ain't inside, it ain't yours (anymore)"

n.

  #49   Report Post  
Don Bruder
 
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In article ,
North wrote:

On Tue, 05 Apr 2005 23:22:56 -0500, Pete & sheri
said:



Would the park allow you to have a patio umbrella? Maybe you could
attach a loop antenna to the underside of it. I wouldn't be surprised
if you could get away with a 20' square umbrella.

Pete Stanaitis


I'm quite sure that gunner had to block up his RV and remove the
wheels/tires to:

A) keep his RV from getting stolen

B) keeps his RV's wheels and tires from getting stolen.

How long do you think gunner would remain the owner of such an
umbrella ? Minutes ? hours ? day or two ? Remember the universal
trailer park law "If it ain't inside, it ain't yours (anymore)"


Or the variation: If it ain't nailed down, it's mine, and if I can
pry/jackhammer/chainsaw/hoist/dynamite/otherwise get it loose, it wasn't
nailed down"

--
Don Bruder - - New Email policy in effect as of Feb. 21, 2004.
Short form: I'm trashing EVERY E-mail that doesn't contain a password in the
subject unless it comes from a "whitelisted" (pre-approved by me) address.
See http://www.sonic.net/~dakidd/main/contact.html for full details.
  #50   Report Post  
Bruce L. Bergman
 
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On 5 Apr 2005 10:18:16 -0700, jim rozen
wrote:
In article , Robert Swinney says...


Jim, I don't think you are referring to old fashioned "grounded" single wire
(literally one wire) telephone service.


That's what they had up the canyon I think. Everyone was on one
line. A pretty remote area. I don't think it was fence wire
though, it was copper.


One pair "C Rural" telephone wire, interesting stuff. Two 14-ga
copper plated steel wires in an oval molded hard jacket - was rubber,
now polyolefin. The copper carried the signal, the steel gave it the
strength. You hang it from the pole with steel wire preforms like on
steel strand.

http://www.superioressex.com/products/osp/c-rural.htm

Designed to be strung under tension like a steel messenger, could go
up to (IIRC) 400' between poles, so they didn't have to use any more
poles than the power company did. Saved them intersetting new poles
to support phone wires in between the power poles.

This wire was designed for feeding that one lone farmhouse 3 or 4
miles off the main road. One big problem, the stuff is a bear to
splice, Nicopress sleeves and solder, then lots of tape... So you'd
take a whole reel of it out, enough to string the whole run as one
piece, and use the tap-feed fittings at each end. Add more taps in
the middle if you needed bridge tap drops for the barn or
outbuildings.

And no twist to it, so it could still pick up noise from power.

This stuff wouldn't make a good SW/MW antenna, unless you were going
for a /really/ long long-wire. And I'm not sure what effects the two
wires in parallel would have, even if you shorted them together at
each end.

-- Bruce -- Ex-Construction Cable Splicer.
--
Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop
Electrician for Westend Electric - CA726700
5737 Kanan Rd. #359, Agoura CA 91301 (818) 889-9545
Spamtrapped address: Remove the python and the invalid, and use a net.


  #51   Report Post  
Howard Eisenhauer
 
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On Wed, 06 Apr 2005 03:58:29 GMT, Gunner
wrote:

On Wed, 06 Apr 2005 00:23:42 GMT, Howard Eisenhauer
wrote:

Gunner, can you get away with a CB antenna? You really don't need a
lot of antenna for SW reception, a moderate sized mirror mount whip
should work pretty well & I'm sure you wouldn't be the only one in the
park sporting one.

Howard.


Actually..the only one in this park is on my truck. I do have a spare
K40 48" whip somewhere around the homestead, and Ill dig it out this
weekend and make up a mount and run some coax and give it a try.

Im sure Im going to need a power line filter though. The radio may be
run off 12vt dc, or line, or 8 D batteries. I may simply use a DC
supply and see if that kills some of the noise from the puter.

Gunner


I had the same problem with my PC, I could pick up noise all over the
house, especially bad below 4-5 MHz. I put ferrite cores on every
power cord I involved with the PC & the radio as well & that improved
it quite a bit. later on I replaced my CRT monitor with a LCD & now
the problem seems to be gone all togeather . YMMV.

H.



On Tue, 05 Apr 2005 10:01:20 GMT, Gunner
wrote:

Over the weekend, I stumbled into a Panasonic RF-4800 general
communications receiver. It looks like it just came out of the box.
Mint+.

I have some issues that perhaps some of you can help with.

First of all, as some of you know, I spend most of the week working
out of an RV in an RV park. The park rules are such that they really
frown on antennas other than TV. So it leaves out a long wire antenna.
My TV antenna (no cable in the park) is about 12' to the yagi. So I
have a mounting height issue..the Slinky trick is out.

Anyone got a good suggestion for a low profile antenna that will cover
broadcast to 31 mhz? Vertically polarized, or
horizontally..horizontal would be best. The RV has a surface aprox 7'
wide by 20' long.

loop antennas are out. No way to turn it from inside and are a bit
high profile.

Second big question. The only place to put this receiver is within 3
feet of my computer. So Im getting freaking huge birdies all over the
spectrum with the puter/monitor turned on.

The receiver has a 50ohm Pl259 coax connector, as well as a binding
post for a long wire. Plus a binding post for AM broadcast and a
third for FM broadcast.

The RV itself is a damned good Faraday cage. Aluminum siding, aluminum
window frames and screen. Even the local stations fade to zip when
the door is closed. I have to leave the cell phone near a window to
work. So the antenna has to be external. Shrug.

Anyone got any suggestions? Ive got a chunk of wire tossed over the
roof at the moment, but tis not particularly effective.

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"


Rule #35
"That which does not kill you,
has made a huge tactical error"


  #52   Report Post  
jim rozen
 
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In article , Gunner says...

Im sure Im going to need a power line filter though. The radio may be
run off 12vt dc, or line, or 8 D batteries. I may simply use a DC
supply and see if that kills some of the noise from the puter.


Also follow the instructions about bonding the coax as it exits
the RV shell.

Because the metal skin is a good faraday shield as you say, it
will keep the rf noise from getting *outside* where the antenna
is. So all you need to do is make sure that the rf does not
ride along the sheild of the coax and get to the antenna. By
bonding the shield (stopping off at a bulkhead fitting) to the
skin, you prevent this.

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================
  #53   Report Post  
jtaylor
 
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"Gunner" wrote in message
...

I really want to listen to the SW bands.


6 mHz in the evenings is good....


  #54   Report Post  
Don Foreman
 
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On Wed, 06 Apr 2005 03:58:29 GMT, Gunner
wrote:

Actually..the only one in this park is on my truck. I do have a spare
K40 48" whip somewhere around the homestead, and Ill dig it out this
weekend and make up a mount and run some coax and give it a try.


I don't know if this would work or not, but it's certainly stealthy.
It depends on the RV not being grounded to RF. If it is grounded to
the utility, an RF choke in the ground line would fix that: just a
few turns of #14 on a large ferrite toroid. I can send you a toroid.

Think of the RV itself as a fat whip. It is certainly more than 4
feet high. It will have a large capacitance to ground, but a whip
is just a capacitive E-field probe and radiation resistance for short
antennae is very very low.

For "ground", you then create a counterpoise on the ground under the
RV. It could be a length of wire, radials, or even chicken wire. It
is out of sight and essentially invisible.




  #55   Report Post  
Gunner
 
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On Wed, 06 Apr 2005 04:55:24 GMT, Bart Bailey wrote:

In posted on
Wed, 06 Apr 2005 03:51:35 GMT, Gunner wrote: Begin

In this RV park..the only flag that wouldnt get stolen is the Mexican
flag. Few of my neighbors are english speakers.


How about the UFW flag http://tinyurl.com/5ss7b


I actually have one of them. Long story. G

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"


  #56   Report Post  
Gunner
 
Posts: n/a
Default

On Tue, 05 Apr 2005 23:22:56 -0500, Pete & sheri
wrote:



Would the park allow you to have a patio umbrella? Maybe you could
attach a loop antenna to the underside of it. I wouldn't be surprised
if you could get away with a 20' square umbrella.

Pete Stanaitis


OOOOO...sneaky!

Gunner


Rule #35
"That which does not kill you,
has made a huge tactical error"
  #57   Report Post  
STATE MILITIA
 
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Just get a big wire, connect it to your rig and throw it into a tree
(if one is nearby your RV)

This is what I do at home and I hear all kinds of stuff...

  #58   Report Post  
Stormin Mormon
 
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Run the reciever off the TV antenna?

I had a cell phone one time, which had a screw connector. I got a mobile
mount antenna, and stuck it to the window AC. Ran the wire inside. Worked
well.

Can you run a vertical wire parallel to the lead in wire from the roof
antenna? I remember a recipe for a vertical coaxial ground plane, folding
the shield back over the black plastic.

But, that was for TX. Perhaps a RX antenna would be more forgiving.

Just thinking a bit here, nothing that I've tried and had succeed.
--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


"Gunner" wrote in message
...
Over the weekend, I stumbled into a Panasonic RF-4800 general
communications receiver. It looks like it just came out of the box.
Mint+.

I have some issues that perhaps some of you can help with.

First of all, as some of you know, I spend most of the week working
out of an RV in an RV park. The park rules are such that they really
frown on antennas other than TV. So it leaves out a long wire antenna.
My TV antenna (no cable in the park) is about 12' to the yagi. So I
have a mounting height issue..the Slinky trick is out.

Anyone got a good suggestion for a low profile antenna that will cover
broadcast to 31 mhz? Vertically polarized, or
horizontally..horizontal would be best. The RV has a surface aprox 7'
wide by 20' long.

loop antennas are out. No way to turn it from inside and are a bit
high profile.

Second big question. The only place to put this receiver is within 3
feet of my computer. So Im getting freaking huge birdies all over the
spectrum with the puter/monitor turned on.

The receiver has a 50ohm Pl259 coax connector, as well as a binding
post for a long wire. Plus a binding post for AM broadcast and a
third for FM broadcast.

The RV itself is a damned good Faraday cage. Aluminum siding, aluminum
window frames and screen. Even the local stations fade to zip when
the door is closed. I have to leave the cell phone near a window to
work. So the antenna has to be external. Shrug.

Anyone got any suggestions? Ive got a chunk of wire tossed over the
roof at the moment, but tis not particularly effective.

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"


  #59   Report Post  
bw
 
Posts: n/a
Default

"Don Foreman" wrote in message
...
On Wed, 06 Apr 2005 03:58:29 GMT, Gunner
wrote:

Actually..the only one in this park is on my truck. I do have a spare
K40 48" whip somewhere around the homestead, and Ill dig it out this
weekend and make up a mount and run some coax and give it a try.


I don't know if this would work or not, but it's certainly stealthy.
It depends on the RV not being grounded to RF. If it is grounded to
the utility, an RF choke in the ground line would fix that: just a
few turns of #14 on a large ferrite toroid. I can send you a toroid.

Think of the RV itself as a fat whip. It is certainly more than 4
feet high. It will have a large capacitance to ground, but a whip
is just a capacitive E-field probe and radiation resistance for short
antennae is very very low.

For "ground", you then create a counterpoise on the ground under the
RV. It could be a length of wire, radials, or even chicken wire. It
is out of sight and essentially invisible.



There's a business idea, the "Mobile Home" mobile antenna.
Better get your trademark filed.


  #60   Report Post  
Gunner
 
Posts: n/a
Default

On 6 Apr 2005 12:38:48 -0700, "STATE MILITIA"
wrote:

Just get a big wire, connect it to your rig and throw it into a tree
(if one is nearby your RV)

This is what I do at home and I hear all kinds of stuff...


Trees?

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"


  #61   Report Post  
Don Foreman
 
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On Thu, 7 Apr 2005 00:21:10 -0500, "bw" wrote:

"Don Foreman" wrote in message
.. .
On Wed, 06 Apr 2005 03:58:29 GMT, Gunner
wrote:

Actually..the only one in this park is on my truck. I do have a spare
K40 48" whip somewhere around the homestead, and Ill dig it out this
weekend and make up a mount and run some coax and give it a try.


I don't know if this would work or not, but it's certainly stealthy.
It depends on the RV not being grounded to RF. If it is grounded to
the utility, an RF choke in the ground line would fix that: just a
few turns of #14 on a large ferrite toroid. I can send you a toroid.

Think of the RV itself as a fat whip. It is certainly more than 4
feet high. It will have a large capacitance to ground, but a whip
is just a capacitive E-field probe and radiation resistance for short
antennae is very very low.

For "ground", you then create a counterpoise on the ground under the
RV. It could be a length of wire, radials, or even chicken wire. It
is out of sight and essentially invisible.



There's a business idea, the "Mobile Home" mobile antenna.
Better get your trademark filed.

If you see an op here, feel free to pursue. I'll say again that I
don't know if this would work or not.

Theory can be very useful and I use it a lot, but proof is when
ideas are tried and found to work or made to work -- or found not to
work with experimental evidence that clearly shows the idea is flawed
and should be scrapped. The latter case is progress if the
experiments were done well because it serves to focus energy forward.
The trick is to persistently pursue good ideas while drowning the
weak doomed pups ASAP. Popular opinion (as from marketing pukes)
can be the worst possible gage for such decisions.

I'm a retired research puke and prolific inventor with I forget how
many patents, all assigned to corps who care about such truck. I
don't own any and don't want to own any. Inventing is easy,
converting inventions to money is work and defending patents is
expensive.

I retired to fart around and I'm enjoying the hell out of it. I'm
in give-back mode now. I'm also in NIU (nothing is urgent) mode.
I can still get urgent for those that care to pay me enough to get me
off me enjoyably indolent retired arse, but that doesn't happen much.
I didn't book 200 hours last year and I expect to do somewhat this
year. Gone fishin'. Iceout is imminent in MN.

I have a ground wire RF choke toroid sitting here on the bench with
Gunner's name on it. It's 48 mm OD, 35mm ID, 9.5 mm thick. Jerry
Martes sent me several such ferrite toroids and I'm glad to share.
I'd even pay postage because I'm curious to see if this would work.
I think it might, but I don't have an RV to try it with.

I expect that Gunner will find field-expedient quickfix.
  #62   Report Post  
jim rozen
 
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In article , Strabo says...

That's a loop antenna. For experimentation you could leave
one end of the antenna open on the roof and run the other
through the center coax as before. That approximates
an end fed short wire antenna. Another configuration is a
dipole.


To obtain the (folded) dipole, break the antenna conductor midway between
the feedpoint.

Jim


--
==================================================
please reply to:
JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com
==================================================
  #63   Report Post  
Bill Janssen
 
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Gunner wrote:

On 6 Apr 2005 12:38:48 -0700, "STATE MILITIA"
wrote:



Just get a big wire, connect it to your rig and throw it into a tree
(if one is nearby your RV)

This is what I do at home and I hear all kinds of stuff...



Trees?

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"


Well in the case of Taft maybe you could use oil derricks instead of
"trees".

When I was there 40 or 50 years ago they were all over the area.
Probably all gone now.

Bill K7NOM

  #64   Report Post  
Ron DeBlock
 
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On Wed, 06 Apr 2005 00:20:08 -0400, Ed Huntress wrote:


Mine is the 1968 edition. BTW, our recent discussion got me interested in
getting my license again, so I went out last week and took the Tech and
General class tests. I got my General-class call today but it's a 2-over-3:
KC2NZT. I'll go after the Extra and see if I can get a shorter call.


Congrats, Ed! I think they're assigning 2x2 calls for Extras now. If
you're not aware, the FCC allows you to request a vanity call sign for an
extra fee. You could get your old call back, if nobody else has it -
check at www.qrz.com

73,
-Ron N2JSO


  #65   Report Post  
Halcitron
 
Posts: n/a
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Gunner wrote:
Over the weekend, I stumbled into a Panasonic RF-4800 general
communications receiver. It looks like it just came out of the box.
Mint+.

I have some issues that perhaps some of you can help with.

First of all, as some of you know, I spend most of the week working
out of an RV in an RV park. The park rules are such that they really
frown on antennas other than TV. So it leaves out a long wire

antenna.
My TV antenna (no cable in the park) is about 12' to the yagi. So I
have a mounting height issue..the Slinky trick is out.


You are only going to RX right? So, why not do a long wire, or how
about a clothes line lookthing thing strung above your roof? You could
put a "T" at each end of the trailer or opposite corners, then space
insulators, at 6", and make a one strand clothes line. You could do it
in horizontal, or vertical, the birds will love you.


Anyone got a good suggestion for a low profile antenna that will

cover
broadcast to 31 mhz? Vertically polarized, or
horizontally..horizontal would be best. The RV has a surface aprox

7'
wide by 20' long.


Hmmm a few sheets of galvanized and a CB antenna, and you got a ground
plane. Agood set up for a CB antenna. Even a steel cookie sheet and a
magetic mount antenna works.

What about a scanner antenna? RadioShack sells an Outdoor VHF-Hi/UHF
Scanner Antenna Catalog #: 20-176 for $24.99

A long wire can be suspended from a weather baloon, or a kite, if you
really had to.

For a mast, what I've done was to take two 20'lengths of 1-1/2 Rigid
Electrical conduit, and coupled them, then stand it on a rock or
concrete base, and run bailing wire to tie offs along the roof.
Be sure to sink a 5/8" copper plated steel ground rod into the ground
and run a #6 bare copper to the mast.


loop antennas are out. No way to turn it from inside and are a bit
high profile.

Second big question. The only place to put this receiver is within

3
feet of my computer. So Im getting freaking huge birdies all over the
spectrum with the puter/monitor turned on.

The receiver has a 50ohm Pl259 coax connector, as well as a binding
post for a long wire. Plus a binding post for AM broadcast and a
third for FM broadcast.

The RV itself is a damned good Faraday cage. Aluminum siding,

aluminum
window frames and screen. Even the local stations fade to zip when
the door is closed. I have to leave the cell phone near a window to
work. So the antenna has to be external. Shrug.

Anyone got any suggestions? Ive got a chunk of wire tossed over the
roof at the moment, but tis not particularly effective.

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"




  #66   Report Post  
Don Foreman
 
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On Thu, 07 Apr 2005 20:02:14 GMT, Ron DeBlock wrote:

On Wed, 06 Apr 2005 00:20:08 -0400, Ed Huntress wrote:


Mine is the 1968 edition. BTW, our recent discussion got me interested in
getting my license again, so I went out last week and took the Tech and
General class tests. I got my General-class call today but it's a 2-over-3:
KC2NZT. I'll go after the Extra and see if I can get a shorter call.


Congrats, Ed! I think they're assigning 2x2 calls for Extras now. If
you're not aware, the FCC allows you to request a vanity call sign for an
extra fee. You could get your old call back, if nobody else has it -
check at www.qrz.com


How do you do that? I'd love to get my old call back, and it doesn't
seem to be reissued: W8CNK. ( I am now W0LAP)
  #67   Report Post  
Ron DeBlock
 
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On Thu, 07 Apr 2005 16:42:40 -0500, Don Foreman wrote:


How do you do that? I'd love to get my old call back, and it doesn't
seem to be reissued: W8CNK. ( I am now W0LAP)


Good info he http://www.arrl.org/arrlvec/vanity.html

If you're willing to pay someone to do it all for you:
http://www.w5yi.org/page.php?id=269

-Ron
  #68   Report Post  
 
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On Wed, 06 Apr 2005 03:53:39 GMT, Gunner
wrote:

I really want to listen to the SW bands. I think Ill dig into my
Stuff when finally go home this weekend and see what Ive got stashed
in my comm gear bins. I like the idea of the wire on standoffs around
the edge of the roof. Attaching them is going to be problematic.


2 X 6's laid on their 6" side around th' perimeter with eyebolt
standoffs screwed in every couple of feet to string th' wire through.
Time to move? Just dismantle and throw 'em inside.

Snarl

  #69   Report Post  
Gunner
 
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On Thu, 07 Apr 2005 15:23:39 GMT, Bill Janssen
wrote:

Gunner wrote:

On 6 Apr 2005 12:38:48 -0700, "STATE MILITIA"
wrote:



Just get a big wire, connect it to your rig and throw it into a tree
(if one is nearby your RV)

This is what I do at home and I hear all kinds of stuff...



Trees?

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"


Well in the case of Taft maybe you could use oil derricks instead of
"trees".

When I was there 40 or 50 years ago they were all over the area.
Probably all gone now.

Bill K7NOM


Ayup. A very few still standing. The wooden one at the Oil Museum came
down in a strong wind storm last year.

But..we can count pump jacks.

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"
  #70   Report Post  
Ed Huntress
 
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"Ron DeBlock" wrote in message
news
Congrats, Ed! I think they're assigning 2x2 calls for Extras now. If
you're not aware, the FCC allows you to request a vanity call sign for an
extra fee. You could get your old call back, if nobody else has it -
check at www.qrz.com


Thanks, Ron. My old calls were in Pa and Mich: KN3NSR and WB8KYW. I realize
that you can get a call in any area through the vanity system, and that it's
cheap, but I'd rather have a call with the region number 2 since that's
where I am now.

I'll try for the Extra first and see where that leaves me. Then, maybe I'll
go for the vanity call.

BTW, I'm in the market for a *cheap* 2M HT. g

--
Ed Huntress, a Real Cheapskate






  #71   Report Post  
Gunner
 
Posts: n/a
Default

On Thu, 07 Apr 2005 20:02:14 GMT, Ron DeBlock wrote:

On Wed, 06 Apr 2005 00:20:08 -0400, Ed Huntress wrote:


Mine is the 1968 edition. BTW, our recent discussion got me interested in
getting my license again, so I went out last week and took the Tech and
General class tests. I got my General-class call today but it's a 2-over-3:
KC2NZT. I'll go after the Extra and see if I can get a shorter call.


Congrats, Ed! I think they're assigning 2x2 calls for Extras now. If
you're not aware, the FCC allows you to request a vanity call sign for an
extra fee. You could get your old call back, if nobody else has it -
check at www.qrz.com

73,
-Ron N2JSO

damn...my old call sign is still unused. Or at least not in the data
base

Gunner

Rule #35
"That which does not kill you,
has made a huge tactical error"
  #73   Report Post  
Gunner
 
Posts: n/a
Default

On Thu, 7 Apr 2005 21:37:17 -0400, "Ed Huntress"
wrote:

"Ron DeBlock" wrote in message
news
Congrats, Ed! I think they're assigning 2x2 calls for Extras now. If
you're not aware, the FCC allows you to request a vanity call sign for an
extra fee. You could get your old call back, if nobody else has it -
check at www.qrz.com


Thanks, Ron. My old calls were in Pa and Mich: KN3NSR and WB8KYW. I realize
that you can get a call in any area through the vanity system, and that it's
cheap, but I'd rather have a call with the region number 2 since that's
where I am now.

I'll try for the Extra first and see where that leaves me. Then, maybe I'll
go for the vanity call.

BTW, I'm in the market for a *cheap* 2M HT. g


Ebay

Gunner


Rule #35
"That which does not kill you,
has made a huge tactical error"
  #74   Report Post  
Ed Huntress
 
Posts: n/a
Default

"Gunner" wrote in message
...
On Thu, 7 Apr 2005 21:37:17 -0400, "Ed Huntress"
wrote:

"Ron DeBlock" wrote in message
news
Congrats, Ed! I think they're assigning 2x2 calls for Extras now. If
you're not aware, the FCC allows you to request a vanity call sign for

an
extra fee. You could get your old call back, if nobody else has it -
check at www.qrz.com


Thanks, Ron. My old calls were in Pa and Mich: KN3NSR and WB8KYW. I

realize
that you can get a call in any area through the vanity system, and that

it's
cheap, but I'd rather have a call with the region number 2 since that's
where I am now.

I'll try for the Extra first and see where that leaves me. Then, maybe

I'll
go for the vanity call.

BTW, I'm in the market for a *cheap* 2M HT. g


Ebay


Yeah, I may wind up there. There are enough of them around, though, that I
may be able to pick one up from a member of a local club.

--
Ed Huntress


  #76   Report Post  
Andy Asberry
 
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On Tue, 05 Apr 2005 19:16:48 -0400, Peter T. Keillor III
wrote:

On 5 Apr 2005 10:18:16 -0700, jim rozen
wrote:

In article , Robert Swinney says...

Jim, I don't think you are referring to old fashioned "grounded" single wire
(literally one wire) telephone service.


That's what they had up the canyon I think. Everyone was on one
line. A pretty remote area. I don't think it was fence wire
though, it was copper.

Jim


I've seen something like that in far west Texas, near London. There
were glass insulators spiked in the top of fence posts.

Pete Keillor


I have friend there who had to hang and maintain his own phone wire;
all 16 miles of it. Had to install taller posts at every ranch
entrance; both of them. Wire was copper coated steel.

His was a little place. Only 7 miles of road frontage. but it was 12
miles deep.
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