Hi. R1=1MOm

Dear Emilio, no doubt it's 1 MOhm (megaohms) resistor. Good luck for you! We looking for results with your regen

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1 MOm

В детстве делали этот приемник. Отлично работал...

Thank you for all the answers.

I'm looking to build the box and figure out the hardware for the tuning stage. I'll share photos of the process.

Hi, i can't find info in english only datasheet (image) in Russian, so could you help me how connect the heater of 1Zh29B-V ?

Made the Audio Amp stage of the regen radio, input a mp3 player for test, when connect pin 4 and 6 to +1.2 volts, and pin 1 to (- GND) have about 50 microAmp, but the audio sound low.

When connect pin 6 to + 2.2 volts and pin 4 to (- GND) have about 20 microAmp. and the audio sound much better.

Could you help me, how connect the heater? Thanks!!

Dear Emilio,
your test show you the answer already Use pin 4 to ground and pin 6 to +2.2V if it is
better. Good luck!

Thanks (Gracias)

Hi, share the progress of the Regen RX with 1Zh29B-V tubes.

Made a sockets for the tubes with 3D printer, if someone need i could share the STL file of this socket.

The Capacitor Var for tunning is a reuse from old broken walkman, have Dial and driver with thread.

The B+ pile was made with ten 23A batteries (12 volts each one) but the final voltage output down quickly . The batteries put into a iron tube about 30 centimeters long and 1.4 centimeters diameter, the caps made with 3D printer too.

The AF now work fine, thanks for your help about the voltage heater.

The next step is made a Regen stage, i will think made a Coil Socket for change with a MW and SW coils, even perhaps one range coil for SW bands.

Attach some photos, thanks for help.

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