136 kHz direct conversion receiver

Posted on Sep 3, 2012

I describe a simple direct conversion receiver, thinked for QRSS and DFCW communications, as companion of ARGO or SPECTRAN programs. I don`t pretend to beat the performances of professional or commercial ham radio receiver, the scope is to suggest an easy way for beginner to listen (of course I mean look at) the signals in this poorly populated band. The receiver is useful also as portable receiver, fast turn-on receiver for a quick look an the band or as very low cost (and performances) spectrum analyzer. I currently use this equipment for tests purposes.

136 kHz direct conversion receiver
Click here to download the full size of the above Circuit.

Leave Comment

characters left:

New Circuits



Popular Circuits

5W Chinese PLL FM Transmitter With LCD Printed Circuit Board (PCB)
ZXSpectrum128 plus 3 circuit service manual
220V Power Line Interface
Advanced Simulation for ESD Protection Elements
Coin Toss Circuit
Super Oscillator Conversion
Single-ended Class A amplifier circuit diagram of 6N1 + 6P3P