Message: 3
Date: Thu, 11 Feb 2010 23:02:30 -0500
From: Bob Camp <li...@cq.nu>
Subject: Re: [time-nuts] Advice on 10 MHz isolation/distribution
(Clay)
Hi
I suspect your noise spike can be cured by a series R-C to ground from the
junction of Q1 base, Q7 base and all the other stuff. Something is going to
have to set a high frequency roll off. With no coils some combo of R and C is
going to have to do it.
You might also try returning all of the upper emitter resistor bypasses to
ground rather than B+. Another alternative would be emitter to emitter bypass
as shown on the JPL schematic. I'm guessing both would improve isolation in a
real world circuit.
Bob
Hi Bob,
Please provide a link to the JPL schematic.
Clay
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