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-   -   Ideas for a homemade mobile antenna. (https://www.radiobanter.com/cb/32056-ideas-homemade-mobile-antenna.html)

Chris June 15th 04 06:32 AM

Just an update for anyone following this thread. I tried the pvc lower half
with good results. I just did a very loose spiral of copper wire around the
pvc. I was wrong on a couple of things, though. The antenna in the picture
has 12" of copper pipe at the bottom, not 18". The pvc section was 18".
Anyway, there was no difference in performance but it's still not flexible
enough for the trunk mount. The other thing I did was compare it to a
trunk-mounted 3 ft. antenna by antenna specialists. The 2 signal reports I
got showed that my antenna won. The numbers I got from 2 people in different
directions were 5 and 2 db on my antenna and 2 .5 and 1 on the Antenna
Specialists. It's up rather close to the rear window. I wonder if either
antenna would do better closer to the back of the trunk.

Chris
"Chris" wrote in message
nk.net...
I have constructed a homeade antenna that is mounted on a trunk-lip mount

on
a Nissan Sentra. The bottom is 18" of 1/2" copper pipe with a 3/8" theaded
adapter soldered in the bottom. There is a 9" long peice of pvc with a 2"
diameter 6ga. copper coil around it. Then there is 4" more copper pipe

with
a 3ft' stainless tip on top. The problem is that it would be too easy to
bend the trunk with copper pipe. I thought about a spring but then the

whole
thing would bend too much when the trunk is opened. If I move the coil

down
below roof level, the SWR goes way up. I thought about using pvc for the
lower part but I can't quite figure out how to construct it. I may take

some
pictures of what I have. Stay tuned......





[email protected] June 15th 04 10:10 AM

On 14 Jun 2004 19:53:19 -0700, (I Am Not
George) wrote:

wrote:

Huh......... A bent over 9 foot whip has a very noticeable Loss
compared to a efficient 4 or 5 foot vertical.

how do you know have you modeled it hoople head?


Many times...........even tested them.



Sorry your tests results were debunked by Frank in the xterminator
thread, you are a voodoo tech


In your opinion. The subject has nothing to do with that. It has to do
with a bent over antenna becoming a poor antenna.

[email protected] June 15th 04 10:15 AM


Many times...........even tested them.



Sorry your tests results were debunked by Frank in the xterminator
thread, you are a voodoo tech


Frank never tested any of the antennas. Frank as well as you still
believes the earth is flat.

Dave Hall June 15th 04 12:10 PM


On Mon, 14 Jun 2004 14:14:44 -0400,
(Nicolai Carpathia) wrote:

Landshark wrote:
LOL!!! I love it. All I do is type Ditto to "LMAO" and notice Geo calls
ME a hypocrite. He should talk, right BP. He defends Doug a known Felon,
repeater jammer, porn poster, spammer, nut case. Leland defends Doug
too, so George has no legs to stand on when calling other people
hypocrites.
****************Landshark
_
Frank and Hall and both ran to defend N8WWM on many occasions, too. This
little group is what comprises the "akc" that Frank always refers. Hell,
"AKC" is one of Frank's favorite terms,,google THAT term and see who
pioneered it,,,Doug, Frank, Lelnad, Geogre, and Hall..in that order.



Another lie. I NEVER endorsed or claimed to be a part of "AKC". I
have also NEVER defended any actions that Doug has been proven guilty
of.

I HAVE made the cautionary claim that people should not jump to
conclusions based on heresay until all the facts are in.


Dave
"Sandbagger"

Lancer June 15th 04 01:37 PM

On 14 Jun 2004 20:09:15 -0700, (I Am Not
George) wrote:

Steveo
wrote:
(I Am Not George) wrote:
wrote:

Huh......... A bent over 9 foot whip has a very noticeable

Loss
compared to a efficient 4 or 5 foot vertical.

how do you know have you modeled it hoople head?

Many times...........even tested them.

Sorry your tests results were debunked by Frank in the xterminator
thread, you are a voodoo tech

You sure do like to speak for Frank and Leland. hmmm


Not speaking for them just stating a fact Tnoms antenna tests were
shown for what they are which is voodou cb science.


Not really, have you tested any antennas?

Lancer June 15th 04 01:39 PM

On Tue, 15 Jun 2004 05:10:57 -0400, wrote:

On 14 Jun 2004 19:53:19 -0700,
(I Am Not
George) wrote:

wrote:

Huh......... A bent over 9 foot whip has a very noticeable Loss
compared to a efficient 4 or 5 foot vertical.

how do you know have you modeled it hoople head?

Many times...........even tested them.



Sorry your tests results were debunked by Frank in the xterminator
thread, you are a voodoo tech


In your opinion. The subject has nothing to do with that. It has to do
with a bent over antenna becoming a poor antenna.


Yeah, if you really want to improve the efficiency of your antenna,
bend it over and put the high voltage node close to a large mass of
metal. LOL.

Lancer June 15th 04 02:35 PM

On Tue, 15 Jun 2004 08:00:56 -0500, itoldyouiamnotiamnotgeorge
wrote:

Lancer wrote in news:[email protected]
4ax.com:


Yeah, if you really want to improve the efficiency of your antenna,
bend it over and put the high voltage node close to a large mass of
metal. LOL.


What do you think happens when you drive down the road with a coil antenna,
the whip folds back and almost touches itself.


Well mine doesn't and a decent antenna would have a stiff enough
whip not to do that. He was talking about bending it over like the
"Barney Phife" mobile.

Lancer June 15th 04 02:38 PM

On Tue, 15 Jun 2004 08:01:39 -0500, itoldyouiamnotiamnotgeorge
wrote:

Lancer wrote in news:[email protected]
4ax.com:


Not really, have you tested any antennas?


I have tested many antennas , have you?


Yes, very many. I thought I was responding to I Am Not George.

Too many Georges around here to keep track of..

I Am Not George June 15th 04 08:35 PM

(itoldyouiamnotiamnotgeorge)itoldyouiamnotiamnotge wrote:
Lancer wrote in news:[email protected]
4ax.com:


Not really, have you tested any antennas?


I have tested many antennas , have you?



take it away lil bro, ROTFLMMFAO

I Am Not George June 15th 04 08:43 PM

Lancer wrote in message . ..
On Tue, 15 Jun 2004 05:10:57 -0400, wrote:

On 14 Jun 2004 19:53:19 -0700,
(I Am Not
George) wrote:

wrote:

Huh......... A bent over 9 foot whip has a very noticeable Loss
compared to a efficient 4 or 5 foot vertical.

how do you know have you modeled it hoople head?

Many times...........even tested them.


Sorry your tests results were debunked by Frank in the xterminator
thread, you are a voodoo tech


In your opinion. The subject has nothing to do with that. It has to do
with a bent over antenna becoming a poor antenna.


Yeah, if you really want to improve the efficiency of your antenna,
bend it over and put the high voltage node close to a large mass of
metal. LOL.


I didnt say the whip was close to a large mass of metal I said bent
over like a bow and that means in free space, assteroid.


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