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

73,
Ed Knobloch

Steve NU0P wrote:
I just acquired a Mars Thunderbird Mobile Tansmitter that uses a pari of
6AQ5 tubes and a 12AU7. The 12AU7 is the oscillator/Amp and one of the
6AQ5's is the PA. The other 6AQ5 is the AM modulator. This is a very nice
Japanese made radio from the early 60's designed for mobile use.