[Lowfer] RE: Worthwhile going to Shielded loop?

[Bill Ashlock]

>Please don't laugh, but my receive loop, ~1.6 meters square, is
>connected to the shack via (unshielded) cat-5 cable.
>The loop and preamp are balanced, so there is a natural differential
>output that drives one cable pair.  At the shack, a transformer
>converts to a single ended receiver feed.  A second pair provides
>power to the preamp.  One of the remaining four wires is used for
>varactor tuning voltage; the others are spares.
>The loop Q has been intentionally reduced to about 20, giving a
>winter daytime noise level about 10 dB above the preamp noise.
>I believe that noise picked up by the unshielded cable is
>negligible, more than 20 dB below the preamp noise.

I'm far from laughing, Stewart. It looks like you have done your homework on 
this loop.

Bill A

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