Tube buffs' CW filter kit consisting of schematic and simple
instructions with two 455 kHz crystals. Add a few parts and
voila... single-signal reception...
Proven 1960s design with make a great addition to any
ham receiver from the tube era. Or make your own
solid state version.
This is an adjustable 250 Hz wide filter. Requires two tubes,
6AK5 and 12AX7 and uses 150V DC, 6.3V AC but no i.f. transformers or coils. Just a few resistors and caps, and
two 30 pF trimmers. (also available)
The partial kit consists of two new crystals and the instructions
plus a schematic.
Available for $30.00 plus shipping
Reply via e-mail to arrange purchase or for further details.
af4k@hotmail.com
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