Mixed technologies radio.

[Amie]

Hi Amie.
When I did the single 1J42A pantry tx I initially used an LC tunable circuit. The stability was really uncanny with only a few Hz drift after a few hours, even voltage drop from 9 to 6v made only a few tens of Hz difference, filament voltage made no difference to drift. Using a separate osc is the best way I think as I can tie the two split control grids, also able to get a good level of injected signal.

I would be interested to know what level of oscillator signal on the dual control rod pentode would be required for efficient conversion, have you fed one separately from a generator and measured?

On a slightly different note I remember your dad asking me if he could repost my circuit of the panry tx on the Radioboard forum, seems like yesterday.

I don't know when that was but even though he's been gone over two and a half years, I still wake up thinking he is still here, I know you will understand....

Thanks.
Amie