[Lowfer] Hz question.

KD7JYK DM09 kd7jyk at earthlink.net
Thu Mar 1 17:31:44 EST 2012


"another good alternative for coupling to the radio might be a line 
impedance stabilization network"

I have a reallt nice one, picked it up for about $40 from an EMC lab. 
Currently they seem to go for about a grand, but I can't find the gold 
bricks or cocaine they must be filled with!

Thinking of a poor-mans version using a brute force RFI filter from some 
computer equipment, then sampling the output which feeds a device in 
operation.  The sampled output would feed a general coverage receiver.  This 
would only serve to show what kind or RFI can be expected from each 
individual device plugged into it.  It doesn't need to be calibrated or 
traceable, just a low enough output to the RX to be heard, maybe give a 
slight indication of a received signal.

Kurt 



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