[Lowfer] OKAY; so maybe I need a loop

[rick kirby]

Just in case anyone is interested ; Burhans original article:" Active 
Antenna For The Vlf To Hf Observer" is located on the NASA website. It 
describes his active whip and amplifier .The article was written in 1979 and 
its available in PDF form. Here is the link:

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790011925_1979011925.pdf


Burhans has quite a few technical articles on the NASA tech website


73
         Rick  KA2PBO
          "PBO"   187.2 Khz QRSS60







----- Original Message ----- 
From: "Mitch Powell" <mitch.powell at sympatico.ca>
To: "Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands" 
<lowfer at mailman.qth.net>
Sent: Thursday, July 08, 2010 21:39
Subject: Re: [Lowfer] OKAY; so maybe I need a loop


> Andy:
>
> Take a look at the following two web sites - and maybe get an idea of 
> combining some of
> the techniques from each one:
> http://members.shaw.ca/ve7sl/burhans.html
>
> Steve and I have been using the "active" one with the Burhans preamp - for 
> quite a few
> years - I have logged NDBs down to the South Pacific and many South 
> American countries,
> as well as the Azores..... it is very, very quiet, and might suit your 
> requirements.
> I have a 12 footer , and an 8 footer - and both work equally well.
> If you're concerned about the preamp - I can send you one !
>
> The other site is Lyle's K0LR
>
> http://www.qsl.net/k0lr/simple-loop/Simple-Loop.htm
>
> and though he just put a fixed capacitor across the loop - it shows how 
> simple it is to make one from coax - - or some remote relays and 
> capacitors ( see W1TAG web site for his remote relay tuning technique. 
> It worked perfectly for me - until I added a stepper motor circuit with 
> big variable capacitor for remote tuning.   Still using after 5 years.
>
> Let me know about the preamp.
>
> 73
>
> Mitch
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