Having managed to retrieve my older newsgroup records, (lost when I
moved to Demon Broadband), I came across this set.[1]
Note the dates and times.
> Subject: J-Pole Connection ??
> Date: Sun, 12 Aug 2001 11:21:57 +0100
> When connecting the co-ax to a 300ohm ribbon J-Pole, does the side that
> the centre lead is attached to make any difference?
>
> As the bottom end is a shorted loop, I would not have thought so, but
> funny things happen at VHF.
>
> John.
>
Precisely two(2)responses were received.
> Subject: Re: J-Pole Connection ??
> From: ma...@nospam.ever (MattD..)
> Date: Sun, 12 Aug 2001 12:40:56 +0100
>>
>
> You were right, John. It does make a difference. The centre of the feeder goes
> to the quarter wave matching stub side, IE. the side with the gap in it. The
> screen should connect to the unbroken side. I have managed to get a decent
> match the other way round, but for some reason I can never get the same
> performance. I can't think why, but I'm sure if we both had time to analyse it
> we'd find out ;o)
> Regards,
> mattD..
> GW0VNR
>
Response 2;
>
> Subject: Re: J-Pole Connection ??
> From: "anthonyg" <
anth...@ntlworld.com>
> Date: Sun, 12 Aug 2001 19:16:27 +0100
>
> Centre Co ax goes to the long Radiator side - screen goes to the short
> stub side.
>
> Tony g4xby
There we go, proves SOMEthing I suppose, if only that as a friend of
the family up in the Black Isle used to say,
"There's no three ways about it."
John.
P.S. It's good to be back ! [2]
[1] Sent to uk.radio.amateur FWIW.
[2] Assuming that this missive actually arrives that is.
--
John MacRae