Pete KE9OA wrote:

Aperture is exactly the point I was going to get at.........this is the
reason that the receivers I have built that use the Mini-Circuits mixers as
the first stage have worked very well with an 8 foot diameter untuned loop.
No IM products anywhere in the LW/MW bands.

What kind of preselection design do you use ahead of the first mixer
stage?

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