[Lowfer] Orion

[Peter Barick]

Pete,
Fine on going the loop route, but what kind are you thinking? A small one needs an amp at LF,
esp., Part-15 freqs.
Part-5, say, 137KHz, offers nose-bleeding tx power so that may be another case and untried by me.

Also, expect the loop to perform best out-of-doors, in the clear. This can be verified by tuning for
NDBs near 200KHz..

My experience w/ a 6-foor tuned multi-turn pentagon shaped outdoor loop worked best w/ an 
amp. (I built one of Lyle Koehler's, the Universal one.)
In my case the amp was near the rx, mostly so I could have access to it for manual tuning.
But with remote diode tuning it could be packaged for outdoors mounting at the loop proper,
considered ideal.

Lastly, consider using a "ground loop de-coupling" means, eg, a toride type transformer on the
feedline near the rx, even as a precaution.
Peter 
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>>> "Pete Cranwell" <pete at pcranwell.com> 02/09/08 6:56 AM >>>
Thanks.

I wil build a loop using varactor diodes to tune.  I guess I don't need to
consider a preamp (comments welcome).
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