modified 8 years ago

136 kHz. Preselector Amplifier

00:59:59

At left, the 136 kHz source is where long wire antenna connection would be.  Two closed SPST switches is output to rest of set.

The two iron core 700 uH coils are both adjustable inductors.

Where MOSFET is should be JFET BF245 or SMT BF545.

More information at:
http://www.qsl.net/ik2pii/lf/prea136.htm

published 8 years ago

LeButch

8 years ago

This is not an aplifier. This just adds a DC offset.

lmccoig

8 years ago

Starts at 30 mV on left. Output is higher at right.

rich11292000

8 years ago

😱 butch is right!!!

hurz

6 years ago

rich and bitch, why not tuning it a little ?

hurz

6 years ago

@lmccoig, thanks for the link! tuned and fixed circuit, here we go http://everycircuit.com/circuit/6159514290880512

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