[Lowfer] t - poor up in AK - Dst only improving slowly - Trees

Tue Apr 15 14:31:00 EDT 2014

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, &amp, 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