Hi, Steve

You're right, the QST article has no schematic.
I just thought the review would be interesting reading for you.

The rig requires 6 or 12V for the heaters,
and 250VDC for the plate supply.
The 6AQ5 modulator is designed for a carbon mic.

Ed

Steve NU0P wrote:
Ed

Thanks for the information but unfortunately my library of QST goes back to
1990 only, will have to ask around to see if anyone has that but as I recall
QST did not publish any schematics usually.

Steve


"Edward Knobloch" wrote in message
news:OMtcf.23445$w_6.17319@trndny09...

Hi,
The Mars Thunderbird was reviewed in March 1960 QST.

73,
Ed Knobloch