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Subject:
From:
Gerry Learry <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sun, 19 Aug 2012 18:59:05 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (110 lines)
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
>> 

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