J-pole question
 

Recently acquired a 50W 2 meter rig, and I'm wondering if using aJ-pole
made of 300-ohm twin lead as an emegency antenna would be feasable..or
would the rig be tuned for maximum smoke?

--
"The French have neither summer nor winter nor morals." -- Mark Twain

J-pole question
 

"Padraigh ProAmerica" wrote in message
...
Recently acquired a 50W 2 meter rig, and I'm wondering if using aJ-pole
made of 300-ohm twin lead as an emegency antenna would be feasable..or
would the rig be tuned for maximum smoke?

--
"The French have neither summer nor winter nor morals." -- Mark Twain


Search at google.com for twin lead j pole; twinlead jpole; jpole twinlead;
j pole twin-lead or some such combination. I found approximately 137,000
search returns whichever way I tried it. You didn't.

Afterward, search for the correct version of your insult against France.
It's misquoted.

J-pole question
 

"Sal" wrote in message ...

"Padraigh ProAmerica" wrote in message
...
Recently acquired a 50W 2 meter rig, and I'm wondering if using aJ-pole
made of 300-ohm twin lead as an emegency antenna would be feasable..or
would the rig be tuned for maximum smoke?

--
"The French have neither summer nor winter nor morals." -- Mark Twain


Search at google.com for twin lead j pole; twinlead jpole; jpole
twinlead; j pole twin-lead or some such combination. I found
approximately 137,000 search returns whichever way I tried it. You
didn't.

Afterward, search for the correct version of your insult against France.
It's misquoted.

To answer your question Pad,
Yes, 300 ohm feed line will do quite well for 2 meters at 50 watts IF it's
made correctly and you have a good match.

Kevin, WB5RUE

Quoted correctly or not it's still accurate.

J-pole question
 

On 7/31/2011 9:49 PM, Padraigh ProAmerica wrote:
Recently acquired a 50W 2 meter rig, and I'm wondering if using aJ-pole
made of 300-ohm twin lead as an emegency antenna would be feasable..or
would the rig be tuned for maximum smoke?


They say it can be done... Not my choice though. I prefer simple 1/4
wave ground planes as simple emergency or temporary antennas.
IE: a 1/4 wave ground plane can be made with five pieces of wire
and an SO-239 connector. Or a telescoping whip that can extend that
far, and four pieces of stiff wire for radials, which would be bent
out at about 45 degrees.
I think the 1/4 wave ground plane will be a better decoupled antenna
vs the usual J-pole, assuming no other decoupling methods are applied.
Another advantage is no matching schemes are required.

J-pole question
 

On 8/1/2011 4:38 PM, Kevin wrote:

Kevin, WB5RUE

Quoted correctly or not it's still accurate.


Ahh, the brothership of Hams - Good to see a friendly face here Kevin.


- Mike N3LI -

J-pole question
 

"NM5K" wrote in message
...
On 7/31/2011 9:49 PM, Padraigh ProAmerica wrote:
Recently acquired a 50W 2 meter rig, and I'm wondering if using aJ-pole
made of 300-ohm twin lead as an emegency antenna would be feasable..or
would the rig be tuned for maximum smoke?


They say it can be done... Not my choice though. I prefer simple 1/4 wave
ground planes as simple emergency or temporary antennas.
IE: a 1/4 wave ground plane can be made with five pieces of wire
and an SO-239 connector. Or a telescoping whip that can extend that
far, and four pieces of stiff wire for radials, which would be bent
out at about 45 degrees.
I think the 1/4 wave ground plane will be a better decoupled antenna
vs the usual J-pole, assuming no other decoupling methods are applied.
Another advantage is no matching schemes are required.


You have a point Mark. I agree that a simple 1/4 wave groundplane is more
study and very easy to make using an so-239 and some piano wire. Steel wire
can be soldered right into the back, four bolts with nuts and four more
peaces of wire around 19" long with a bit of a downward bend and you have a
very good antenna.

Kevin, WB5RUE

J-pole question
 

At least it's good to see that my posts are making it out! ;)

The French, in the cities tend to be rude and arrogant -- kind of like New
York City but worse. In the smaller towns they are quite pleasant and
welcome tourists as long as they don't act like "rude Americans" and expect
"special treatment."

Kevin, WB5RUE

"Mike Coslo" wrote in message
...
On 8/1/2011 4:38 PM, Kevin wrote:

Kevin, WB5RUE

Quoted correctly or not it's still accurate.


Ahh, the brothership of Hams - Good to see a friendly face here Kevin.


- Mike N3LI -

J-pole question
 

On 7/31/2011 9:49 PM, Padraigh ProAmerica wrote:
Recently acquired a 50W 2 meter rig, and I'm wondering if using aJ-pole
made of 300-ohm twin lead as an emegency antenna would be feasable..or
would the rig be tuned for maximum smoke?


It won't smoke if the antenna is tuned, but you could get burned from
the rig or mic.

Those antennas need to have serious choking done on the feedline, at
least 2 a quarter wave apart on the feed just before the antenna.

Doing so helps make the pattern more like what is expected and reduces
hot radio and mic issues.

tom
K0TAR

J-pole question
 

On 8/1/2011 8:11 PM, Kevin wrote:


You have a point Mark. I agree that a simple 1/4 wave groundplane is more
study and very easy to make using an so-239 and some piano wire. Steel wire
can be soldered right into the back, four bolts with nuts and four more
peaces of wire around 19" long with a bit of a downward bend and you have a
very good antenna.

Kevin, WB5RUE


I'd use copper wire vs the steel or piano wire. They would work,
but I think the copper would be a better conductor. Steel in
particular is not too good. Also copper is a lot easier to solder to.
If you use solid wire of say 12 or 14 gauge, it's stiff enough to
stand up straight, but flexible enough to be bent and hold it's
shape.
If you are going to hang the antenna from something, you can use the
inner conductor of coax as the radiator, "shield stripped back 19
inches" and attach wire radials to the shield. All you have to do is
hang it up, and then bend out the radials at about 45 degrees, and you
are ready to become radioactive.

For a deluxe version, shave off the covering of the braid a 1/4 wave
below the radials at the feed point and add a second set of radials
to the braid.
That version would be well decoupled. Would blow most J poles out of
the water I suspect if you want to concentrate on the horizon, vs up
at some peculiar angle which is fairly useless for VHF/UHF.
Decoupling of the feed line is more important than radiator gain on
those bands. IE: a 1/4 GP can often outperform a 1/2 wave vertical if
the 1/2 wave has little or no decoupling. Which is the case for most
1/2 wave J poles.

J-pole question
 

"Kevin" wrote in message ...

At least it's good to see that my posts are making it out! ;)

The French, in the cities tend to be rude and arrogant -- kind of like New
York City but worse. In the smaller towns they are quite pleasant and
welcome tourists as long as they don't act like "rude Americans" and expect
"special treatment."
-
I personally had terrific interactions with people in France. However, it
is still a lot of fun to have jokes at their expense :)

J-pole question
 

You have a point Mark. I agree that a simple 1/4 wave groundplane is more
study and very easy to make using an so-239 and some piano wire. Steel wire
can be soldered right into the back, four bolts with nuts and four more
peaces of wire around 19" long with a bit of a downward bend and you have a
very good antenna.

It's worth noting that you don't actually need four radials. Two
radials (on opposite sides of the feedpoint, bent down at around 45
degrees) will produce a perfectly satisfactory ground-plane. The
patterns of 2- and 4-radial ground plane antennas are almost
indistinguishable. A 4-radial antenna may *look* as if it would
produce a much more circular pattern than a 2-radial antenna, but this
doesn't turn out to actually be the case.


--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

J-pole question
 

"Wayne" wrote in message
...


"Kevin" wrote in message ...

At least it's good to see that my posts are making it out! ;)

The French, in the cities tend to be rude and arrogant -- kind of like New
York City but worse. In the smaller towns they are quite pleasant and
welcome tourists as long as they don't act like "rude Americans" and
expect "special treatment."
-
I personally had terrific interactions with people in France. However, it
is still a lot of fun to have jokes at their expense :)

My only time to be arrested in 68 years: Paris, early afternoon, public
park, sober, in USN uniform. Have all the fun you want with jokes at their
expense.

Eskimos have over 60 words for "ice." The French have about that many for
"surrender."

OK, I'm done.

J-pole question
 

On 8/2/2011 2:33 PM, Sal wrote:
wrote in message
...


"Kevin" wrote in message ...

At least it's good to see that my posts are making it out! ;)

The French, in the cities tend to be rude and arrogant -- kind of like New
York City but worse. In the smaller towns they are quite pleasant and
welcome tourists as long as they don't act like "rude Americans" and
expect "special treatment."
-
I personally had terrific interactions with people in France. However, it
is still a lot of fun to have jokes at their expense :)

My only time to be arrested in 68 years: Paris, early afternoon, public
park, sober, in USN uniform. Have all the fun you want with jokes at their
expense.

Eskimos have over 60 words for "ice." The French have about that many for
"surrender."

OK, I'm done.


According to Hank (the cow dog) chickens have about 12 words. All of
them mean "HELP!"

J-pole question
 

On 8/2/2011 1:37 PM, Dave Platt wrote:
You have a point Mark. I agree that a simple 1/4 wave groundplane is more
study and very easy to make using an so-239 and some piano wire. Steel wire
can be soldered right into the back, four bolts with nuts and four more
peaces of wire around 19" long with a bit of a downward bend and you have a
very good antenna.

It's worth noting that you don't actually need four radials. Two
radials (on opposite sides of the feedpoint, bent down at around 45
degrees) will produce a perfectly satisfactory ground-plane. The
patterns of 2- and 4-radial ground plane antennas are almost
indistinguishable. A 4-radial antenna may *look* as if it would
produce a much more circular pattern than a 2-radial antenna, but this
doesn't turn out to actually be the case.


That's true as far as the pattern. But.. The more radials you
use, the better the decoupling from the feed line. Most of my
1/4 wave GP's actually use 6-8 radials. I've done tests, and
it does make a difference. But for casual use, what you say is
true. Only two radials are required to get a pretty good omni
pattern. Or one, if vertical.. But then you might as well call
it a 1/2 wave vertical instead of a ground plane.
And you will then require some kind of decoupling scheme below
the vertical for optimum results. I prefer radial sets, cones, etc
vs feed line chokes.

J-pole question
 

On 8/1/2011 9:13 PM, Kevin wrote:
At least it's good to see that my posts are making it out! ;)

The French, in the cities tend to be rude and arrogant -- kind of like New
York City but worse. In the smaller towns they are quite pleasant and
welcome tourists as long as they don't act like "rude Americans" and expect
"special treatment."

I've found that when I attempt to speak the language, I'm pretty well
treated.

Now there is the possibility that they just find it amusing and
charming, because I took both French and Spanish, and in conversation I
can slip between both languages inadvertently.

Usually when I note that I "Parlez poco Francaise" they start smiling....

As for New York, I haven't had much trouble there, but then I give back
what I get. Most seem to actually like some attitude. Go figure!

Like the old joke "Can you tell me the directions to Soho, or should I
just go @*^! myself?

Whaddevuh! 8^)

- 73 de Mike N3LI -

J-pole question
 

On Tue, 02 Aug 2011 12:33:09 -0700, Sal rearranged some electrons to say:

"Wayne" wrote in message
...


"Kevin" wrote in message ...

At least it's good to see that my posts are making it out! ;)

The French, in the cities tend to be rude and arrogant -- kind of like
New York City but worse. In the smaller towns they are quite pleasant
and welcome tourists as long as they don't act like "rude Americans"
and expect "special treatment."
-
I personally had terrific interactions with people in France. However,
it is still a lot of fun to have jokes at their expense :)

My only time to be arrested in 68 years: Paris, early afternoon, public
park, sober, in USN uniform. Have all the fun you want with jokes at
their expense.

Eskimos have over 60 words for "ice." The French have about that many
for "surrender."

OK, I'm done.

Do you know why there are so many trees on the streets of Paris?
To give the Germans shade while they are marching.

J-pole question
 

On Aug 1, 9:13*pm, "Kevin" wrote:
At least it's good to see that my posts are making it out! *;)

The French, in the cities tend to be rude and arrogant -- kind of like New
York City but worse. *In the smaller towns they are quite pleasant and
welcome tourists as long as they don't act like "rude Americans" and expect
"special treatment."

Kevin, WB5RUE

"Mike Coslo" wrote in message

...







On 8/1/2011 4:38 PM, Kevin wrote:

Kevin, WB5RUE

Quoted correctly or not it's still accurate.

Ahh, the brothership of Hams - Good to see a friendly face here Kevin.

- Mike N3LI -

It was a lot like that in Germany in the 80's .I was stationed there
for 3 years and found if you get out of the "GI Towns" and went to the
smaller villages and towns outside of the bases they treated you like
gold.Of course I guess that's like anywhere else you get out of the
big cities and people are a more laid back .