[K3PZN-List] Radio Filter Analysis with Spectrogram

[Curt Milton]

I was chatting with some of you on the repeater on how
to measure the passband of the filters in a radio. 
The program is called Spectrogram.  An older freeware
version that I use can be obtained from:

http://www.hitsquad.com/smm/programs/SPECTROGRAM/

To use this program take audio from your rig into your
soundcard's microphone input.  Then tune your radio to
a place where there is no signal - just noise.  This
program will show what your filter looks like!  

See the filters of two of my radios at my website:

http://www.qsl.net/wb8yyy

Anyway, you might be interested in seeing what your
radios are really doing!  

Contact me if you need help in using spectrogram. 
This version runs fine on a low end (old) pentium.  

Curt WB8YYY


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