[Lowfer] Lowfers over night to NE IL

[Johan Bodin]

John,

yes, that sounds like a fun project! I have never heard of a 
self-rectification oscillator before. I'd guess that one of the tubes is 
"upside down". Heater-cathode isolation could be an issue I think, if 
both heaters are fed from the same supply, but maybe the 6DQ6 can 
withstand 163Vpk at that point?

Very interesting... I would love to see the schematic.

Do you power it from a dynamotor?

73, J.B. (Johan Bodin), SM6LKM


John Bruce McCreath wrote:
> Thanks for the report, Garry.  I’ve been tinkering with a MW transmitter
> this afternoon. A pair of 6DQ6 tubes in a self-rectification Hartley, that’s
> powered from a 115 volt 400 Hz. supply, giving 100% modulation with
> an input power of 4.68 watts.  A fun afternoon project.
>
> 73, J.B., VE3EAR
>
> LowFER Beacon "EAR"
> 188.831 kHz. QRSS30
> EN93dr