Wednesday, January 11, 2017

Putting the 80 meter receiver in one place.

 This is the circuit Tom posted. I modified the tuning and regeneration controls. This one works if you have the components. The modification allows for components parameters variations and works with different JFETs. I made a couple of AF output stages for it.

The coil is detailed here:

tuning coil detail

This is the circuit introduced by tom with my modifications.

 I gave the audio output a little boost with this pre amp.

This is the audio amp I am using.

The Audio Amp

 2 watt amp. Connected the 5.6K resistor to the tap between the 3.3Ohm resistors.