[Lowfer] K9AY

[jrusgrove at comcast.net]

Johan

Yes, I recall when you first reported your success using two loops - always 
wanted to try it but haven't had two loops up to give it a try. What I 
should do is put a smaller pair of K9AYs that are good up through 80 meters 
so I can use them in the broadcast band and on 160/80 meters. Guess that 
will have to wait till spring.

Jay



> ----- Original Message ----- 
> From: "Johan H. Bodin" <jh.bodin at telia.com>
> To: "Discussion of the Lowfer (US, European, &amp;UK) and MedFer bands" 
> <lowfer at mailman.qth.net>
> Sent: Thursday, January 15, 2009 7:44 AM
> Subject: Re: [Lowfer] K9AY
>
>
>> Jay,
>>
>> if you install a NW - SE loop of similar size you could try the
>> "two-loops-eight-nulls" trick. Only two DPDT relays are needed in 
>> addition to
>> the usual K9AY relays. One relay to put both loops in series and another 
>> one to
>> reverse the polarity of one of the loops. The series connected loops act 
>> as a
>> two-turn loop with a virtual winding plane at 45 degrees w.r.t. the 
>> actual
>> loops. Reversing the polarity of one of the loops gives "the other" 45 
>> degree
>> direction. Worked great here but the termination had to be readjusted 
>> when
>> switching between 1 and 2 turns.
>>
>> Johan
>>
>> ----
>>
>> jrusgrove at comcast.net wrote:
>>> Johan
>>>
>>> Single 'oversized' loop NE - SW. I suppose when Laurence gets his 
>>> transmitter set up in AK I'll have
>>> to install a NW - SE loop as well. Otherwise I don't need those 
>>> directions for 137 or 500 kHz
>>> activity. Would be nice to play phasing tricks, though.
>>>
>>> Jay
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>