[R-390] poor man's sweep generator

Wed, 11 Sep 2002 09:57:23 -0400

Agree, this works well, use a peak hold mode if available
  Les K1YCM

-----Original Message-----
From: Helmut Usbeck [mailto:[email protected]]
Sent: Monday, January 04, 1988 4:31 AM
To: [email protected]
Subject: [R-390] poor man's sweep generator

I've been using a program called Spectrogram,=20
www.vistualizationsoftware.com, for a while now.

What I do is run the program, and take the output of the r-390a or=20
any other receiver and input it to the soundcard of my computer.  For=20
a signal "injection" tune to a spot where there are no stations.  Use=20
the noise input from the ant. or a diode noise generator.  One will=20
see the bandpass of the filters displayed on your computer screen. =20
I've used this with several receivers to compare bandpass of filters=20
slopes of filters and also to adjust them.  Yes, there is an=20
improvement.

Helm.  WB2ADT

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