[Milsurplus] TCS Filter Adaptor- Corrected Schematic

[Mike Feher]

Dave -

I know, if it isn't broken do not fix it, however I  have a few suggestions
you may want to consider. First, on the input side of the filter. I would
suggest here an RF bypass from the cold end to ground. I would also like to
see a coupling cap between the hot side and the input so the HV does not go
through the filter itself. 0.01s would be fine here for both places. On the
output side, I assume the 1K in the cathode is to provide some bias to the
tube. Unfortunately the coil in the filter essentially shorts the grid to
ground, so, you may encounter distortion with high level signals. Here I
would suggest a 100K from the cold end of the filter to ground with a 0.01
across it for RF purposes. 73 - Mike 

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 

-----Original Message-----
From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of
David Stinson
Sent: Monday, February 15, 2016 7:57 AM
To: boatanchors at mailman.qth.net; milsurplus at mailman.qth.net
Subject: [Milsurplus] TCS Filter Adaptor- Corrected Schematic

I've corrected and updated the schematic  for the TCS Receiver Filter
Adaptor.
Not that I believe anyone will build one, but best to get it right.
73 Dave S.

http://home.netcom.com/~arc5/TCS/TCSFilterAdaptor1.jpg


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