[Boatanchors] More on the TCS Filter Adaptor

[Ian Wilson]

I wonder if the numerous and very cheap 455kHz ceramic filters
could be used for a 6kHz bandwidth AM filter. The impedance levels
would be rather low, but perhaps the filter could be used between
the cathodes in a long-tailed pair amplifier....

73, ian K3IMW

On Sun, Jan 31, 2016 at 11:07 AM, David Stinson <arc5 at ix.netcom.com> wrote:

> 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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