Thanks, Junior.
Will keep working on this little puzzle here.
Tom Behler: KB8TYJ
----- Original Message -----
From: "Junior Lolley" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, August 19, 2012 12:07 PM
Subject: Re: G5RV Disappointment
> Tom and Pat, just checked my 204 foot g5rv no continuity.
> I believe you have a problem Tom I am no expert though.
> My g5rv works pretty good even though it is only 10 foot off of the ground
> on each end.
>
>
> Junior Lolley
> Amateur radio call KG4ITD
> Liberty County Emergency Coordinator
>
>
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Pat Byrne
> Sent: Sunday, August 19, 2012 12:00 PM
> To: [log in to unmask]
> Subject: Re: G5RV Disappointment
>
> Tom,
> I will check my antenna for continuity today but I would expect that you
> shouldn't have continuity at D C. So perhaps there is a short in the
> PL259.
> Also my antenna recommended a lot of coax after the twin lead, either
> fifty
> or seventy-five feet, I don't recall which. So perhaps you would have a
> jumper around that you could incorporate in to the system next weekend.
> The
> height should be good - don't give up on it just yet.
> Pat, K9JAUAt 10:48 AM 8/19/2012, you wrote:
>>Hi, all.
>>
>>Well, I tried the G5RV out at the RV over the week-end, and alas, no
>>joy. I have some theories about what the problem was, which I'll get to
> shortly.
>>
>>First, the good news: The camp site manager had absolutely no problem
>>with my putting up the antenna, and in fact helped with our initial
> installation.
>>So, at least I know I'm good to go if I want to try something else out
>>there.
>>
>>Since the guy was nice enough to help with the installation, I decided
>>to go ahead with his initial suggestion of putting the center on top of
>>his RV, which is about 50 feet from ours, and much higher than ours.
>>The legs of the antenna then went across his roof on each side to
>>adjacent trees. He did wrap one part of one leg around the railing of
>>his RV ladder to keep things in place. The ladder line then came down
>>from the center of the antenna on about a 45 degree angle to the
>>PL259feed point connection on my RV. I'd say the center of the antenna
>>was up about 30 feet, with the legs up about 15 to 20 feet on adjacent
> trees.
>>
>>Overall, my SWR's must not have been good, because the only band I
>>could get the TS480 auto-tuner to tune it on was 10 meters. Everything
>>else gave me the SWR no-tune reading.
>>
>>As for what might have gone wrong, I eliminated a number of possibilities:
>>
>>1. I checked my feed line on the RV, and all other jumper connections,
>>for electrical integrity, and they were fine. I then physically
>>checked the connections on the G5RV itself, and they looked fine. I
>>had my XYL confirm this visually as well.
>>
>>As for what could have gone wrong, then, my theory is that perhaps the
>>roof on the manager's RV was metal, or had metal in it, which served to
>>de-tune the antenna. Wrapping one leg around the RV railing for a turn
>>or two also might have thrown things off.
>>
>>Finally, I did one thing in the way of continuity checking that I want
>>to be sure of with you G5RV experts out there. When you do a
>>continuity check of the G5RV on the PL259 end, is it correct that you
>>get electrical continuity across the coax connector? In other words,
>>when I took my continuity checker, put one lead on the center
>>conductor, and the other on the outer shield of the connector, I got
>>continuity. I assume this indicates that I have an electrically
>>complete antenna. Please correct me if I'm wrong on this.
>>
>>All in all, it was a rather disappointing situation, but if we can get
>>out to the RV next week-end, we'll try something else, perhaps in
>>nearby trees if we can figure out a way to get the center up at a
> reasonable height.
>>
>>73 from Tom Behler: KB8TYJ
>
|