I did, and found no obvious problem.
But will definitely check again.
Tom Behler: KB8TYJ
----- Original Message -----
From: "Gerry Learry" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, August 19, 2012 8:59 PM
Subject: Re: G5RV Disappointment
> check where the ladderline and Coax connect.
> ----- Original Message -----
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Sunday, August 19, 2012 12:12 PM
> Subject: Re: G5RV Disappointment
>
>
>> 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
>>>
>
|
