More TZ-20 Amplifier

My TZ-20 Amplifier project has been on hold waiting for some sort of rack to mount it above my 1934 transmitter. I finally got some help from Skip, K7YOO, to cut and bend a piece of 16 gauge aluminum to form the shelf. 1" angle aluminum is used for the vertical legs and the shelf supports.

Once warm weather returns to Minnesota I'll take the rack apart and give it a few coats of paint, probably black wrinkle to match the rest of the station.

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More TZ-20 Amplifier

Work continues....

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More TZ-20 Amplifier

With the chassis and front panel drilled, punched and painted this project should start looking more like a kit. Everything is in hand, all I need to do is mount, wire and solder.

I laid out the chassis and front panel so that eventually this amplifier will serve as an upper deck of a 70 watt CW transmitter. My 1934 transmitter will be the lower deck/driver.

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More RF Amp

A push-pull amplifier is two tuning caps, two coils and two tubes right? With all of the support circuitry, the output loading circuit I like and miscellaneous parts and hardware it is starting to look like a real project. Once the drilling is done this one will sit until warm weather returns to Minnesota (maybe May?). I want to paint the chassis but not with snow on the ground and temperatures in the 30s.

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RF Amp

Most of my 30s vintage transmitters are in the 10-20 watt range. It would be fun to have a little more power, especially with my 10 watt Meissner Signal Shifter / VFO. According to the specs two Taylor TZ20s in push-pull can be driven with 5 watts to about 110 watts input or 85 watt output. This sounds like what I'm looking for.

As usual any project starts with sorting through parts and then doing a preliminary layout before taking a drill to the metal.

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