[R-390] Detector tests followup
Roy Morgan
roy.morgan at nist.gov
Thu Sep 21 10:19:55 EDT 2006
At 09:35 AM 9/21/2006, n4buq at knology.net wrote:
>...the noise level would just rise a bit on its own and then fade again. Not
>a really high rise in noise, but I could tell it was there. Last night, it
>was as if this "noise rise" suddenly got a lot louder and stayed there.
I suggest you get a nice capacitor hooked up to a probe and when the noise
appears, short out the test points in the radio one at a time to find what
stage the noise is coming from. If it's in the IF deck, then pull tubes one
at a time till it goes away.
Roy
- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
13033 Downey Mill Road, Lovettsville, VA 20180
Phone 540-822-5911 Cell 301-928-7794
Work: Voice: 301-975-3254, Fax: 301-975-6097
roy.morgan at nist.gov --
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