According to card inside the set, this TR-1520 was made in 1948 and last tested/modified in 1954. Also, the number 1695 has been crossed off on the front.
|Front view. Note that the three receptacles are not original.|
|Various views of the TR1520 transmitter/receiver held by Gerrit Gast. (All photos by Gerrit Gast)|
The formula for calculating crystal frequency is thus:
RADIATED FREQ.= (CRYSTAL FREQ. Mcs. x 18) + 9.72 Mc/s
Gerrit wishes to restore this radio back to operating order. Does anyone have a schematic? Send directly to: <email@example.com>
1) Gerrit J.Gast <firstname.lastname@example.org>
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