Using an amplifier with AGC like the MC1590 is a sure method of ensuring
high flicker phase noise and a high phase noise floor.
The emitter followers by themselves provide insufficient reverse
isolation for most applications.
Usually one requires 0dB (or perhaps more) gain so that an input preamp
with at least 6dB gain is required.
The widespread use of inductors precludes this circuit from
consideration if one wishes to avoid magnetic components.
Another issue for some applications is the relatively high dc emitter
current required by the emitter followers to produce the desired RF
output level.
For some applications this may be an issue.
Bruce
Bob Camp wrote:
Hi
Boy, that's an old circuit. I don't think I would want to try to buy the
chips in the "front end" of that amp. I also suspect the front end is a bit
noisy.
The output stuff with the 3904's looks very reproducible though. That end of
it certainly is worth looking at.
Bob
-----Original Message-----
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Electronics and Books
Sent: Thursday, February 18, 2010 9:54 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Advice on 10 MHz isolation/distribution SRS FS700
An easy way to make a 10 MHz distribution amplifier is the one from Stanford
Research.
Manual can be find at :
http://www.thinksrs.com/downloads/man.htm
Download FS700
The schematics are in the back of the manual.
Met vriendelijke groeten
Regards
electronicsandbo...@yahoo.com
http://www.ElectronicsAndBooks.tk
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