[Lowfer] t - poor up in AK - Dst only improving slowly - Trees
Neil Klagge
lowfer.nklagge at gmail.com
Tue Apr 15 17:03:17 EDT 2014
Thanks, Laurence, for those diagrams. I decided to save them, just in case
I might need them for an experiment some day. Very cool set up you have
there. My lot is too small for a big loop (...xyl...) so I have to stick
with my vertical for now. I think I finally have it the way it is going to
stay for a long time. Hopefully I can get it tunable from inside the shack
some day.
Thanks again for the pix and the info on ur loop system there.
Blessings,
Neil
w0yse, Layton Utah
On Tue, Apr 15, 2014 at 12:31 PM, Howell, Laurence J <
L.Howell at conocophillips.com> wrote:
>
>
> Hi Neil
>
>
> Heres a copy of schematics - yes its stable enough I used to go away for
> 2 weeks in Okie and leave the Tx at 1.0Kw plus output and not loose sleep
> :-) after all it was a rental property...
>
>
> http://kl7l.com/MF.png
> http://kl7l.com/LF.png
> http://kl7l.com/tuner.jpg
>
> The tuner jpg shows you the Birch forest and why the Marconi is not as
> good todate.
>
>
> There is an extensive earth mat (for the Marconi) under the loop but its
> not galvanically connected at the moment - thoughts were tuning this per a
> suggestion from John TAG and some old experimental results he found but Ive
> not gone there yet..I need to as it says perhaps another 5dBs are to be
> had..
>
> I do get a little more tuning variation up here in AK then in OK but Im
> using a large Pine as a central support and it move a lot in the strong
> glaciated valley winds we are famous for, but not as much as the Marconi
> which can be all over the place given the changing load due to nearby nears
> sapping up all the RF current and changing the Ctot.
>
> I guess Im just lazy and the loop is easy to tune and by the looks of it
> (for here) its going to perform better at 600m -I already know the loop is
> better than the Marconi at 137kHz by a massive 6 or more 6dBs in the main
> lobe)
>
> Cheers
> Laurence KL7L et al
>
>
> -----Original Message-----
> From: lowfer-bounces at mailman.qth.net [mailto:
> lowfer-bounces at mailman.qth.net] On Behalf Of Neil Klagge
> Sent: Tuesday, April 15, 2014 10:16 AM
> To: Discussion of the Lowfer (US, European, &, UK) and MedFer bands
> Subject: [EXTERNAL]Re: [Lowfer] t - poor up in AK - Dst only improving
> slowly - Trees
>
> Hi Laurence,
> I am impressed by the performance of ur loop over ur T vertical. From what
> I have read from other guys, the loop is not dependent on a ground field
> system. Is that right ?
>
> JB McCreath (MP) says his loop remains in tune rain or shine and the swr
> seems very stable. I guess he hardly ever has to re-tune it.
>
> Thanks for the info...very cool.
> 73, Neil
>
> w0yse, Layton Utah
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