Simple and effective HF preselector
by sv3ora
Here is my simple and effective HF
preselector design (built and tested) with only 2 ranges (DPDT switch)
for the whole HF and varicap tuning. The circuit is cheap to build and
you do not need any inductors winding skills, as it uses molded
chokes. It just works and it works great. Try to place the molded
chokes in relative positions that are perpendicular to each other, or
far away from each other, so as to avoid unwanted coupling between them.
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