I powered up the unit (slowly with a Variac) with the rectifier and oscillator tubes and a crystal installed and verified that I see an RF signal at the output of the stage, so it is working. Now to move on to the final amplifier stage.
Sunday, April 8, 2018
Rebuilding The Heathit AT-1 Transmitter - Oscillator Stage
I completed the wiring of the oscillator stage. The two RF chokes were replaced with toroids. Once is larger, so I mounted it against the chassis using a rubber grommet. The other is small enought to hang in the air by its leads.
I powered up the unit (slowly with a Variac) with the rectifier and oscillator tubes and a crystal installed and verified that I see an RF signal at the output of the stage, so it is working. Now to move on to the final amplifier stage.
I powered up the unit (slowly with a Variac) with the rectifier and oscillator tubes and a crystal installed and verified that I see an RF signal at the output of the stage, so it is working. Now to move on to the final amplifier stage.
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