[time-nuts] Noisy varactor diodes

cdelect at juno.com cdelect at juno.com
Tue Dec 18 18:29:58 UTC 2012

I was recently repairing a noisy A3 module for an HP 5065A.

The phase modulator has 4 varactor diodes in parallel.

Since I suspected a diode, I removed them one at a time.

Of course it was the last one! Must be a universal rule there!

Anyway here is a PIX of the noise with the diode reverse biased at 20

Anybody know where to get an MV840 ???


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