The coil of coax will act as an RF choke and save the almost inevitable shield RF currents.

73


David W Wood

Ham call - G3YXX
FOC # - 1685
Licensed - 1969
 

-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]] On Behalf Of Lou Kolb
Sent: Sunday, August 19, 2012 7:37 PM
To: [log in to unmask]
Subject: Re: G5RV Disappointment

I don't know if this applies to all flavors of the G5RV but the N8AMZ 
version that I just put up here calls for at least 70 feet of coax before 
the ladder line.  Consequently, I have a bunch of it coiled up in the shack. 
So far, it's working great, especially on 40 meters.  Surprisingly, it Works 
better on 30 than the old one did.
Lou Kolb
Voice-over Artist:
Radio/TV Ads, Video narrations
Messages On-hold:
www.loukolb.com
----- Original Message ----- 
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, August 19, 2012 2:31 PM
Subject: Re: G5RV Disappointment


>    Tom:
>
> Well, the coax is not a problem. ... I was just trying to keep my feed 
> line
> as short as possible.
>
> My next approach (once I get the short figured out), is to get the antenna
> up in the trees, as I originally had planned. How exactly I'm going to do
> that remains to be seen, but I'm sure there's a solution somewhere.
>
> Tom Behler: KB8TYJ
>
> ----- Original Message ----- 
> From: "Tom Brennan" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Sunday, August 19, 2012 12:41 PM
> Subject: Re: G5RV Disappointment
>
>
>> You shouldn't be seeing a dead short.
>>
>> If you're wrapped around a metal ladder you'll never get the thing to
>> work.
>> You've got to be away from metal.  Also, that antenna usually likes to 
>> see
>> 50ft
>> of coax and an 8-10 turn choke will help with the coax.  They're good
>> little
>> antennas so don't give up yet but also keep in mind that you won't get 
>> the
>> performance with a sloper that you will with a flat top configuration.
>> You'll
>> have more of a vertical takeoff angle.
>>
>> Tom
>>
>>
>> Tom Brennan  KD5VIJ, CCC-A/SLP
>> web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html
>> 

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