[Boatanchors] More on the TCS Filter Adaptor

[W2HX]

Very cool! Thanks for sharing.

-----Original Message-----
From: Boatanchors [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of David Stinson
Sent: Sunday, January 31, 2016 2:08 PM
To: milsurplus at mailman.qth.net; boatanchors at mailman.qth.net
Subject: [Boatanchors] More on the TCS Filter Adaptor

Thanks to everyone who contributed information and resources.  You're the best!

This adaptor is very impressive.  And simple.
I used the TCS set on the 160 meter contest last night and had several successful QSOs that would have been impossible through all that mess without it.
The manual and schematics of two versions of the adaptor are here:

http://home.netcom.com/~arc5/FilterAdaptor/

Question for Smart People:
The adaptor is great, but the stock assembly is too tall (as you saw from the video) to fit inside the TCS.
I intend to build a more compact adaptor.

Are there any miniature, solder-in tubes that will replace the 6BA6 and 6AU6?  I know I could build it using those tubes, but I always wanted an excuse to use sub-minis somewhere.  
It could be done sand-state, but I'd have to "ham-mer" the wiring in the IF stages to insert it like that.  Would rather stick with this "tried and true" circuit, more or less.

TNX OM DE Dave AB5S

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