Note
QST, Mar 1947, p. 145.
Concord catalog 9-47, p. 160.
See National's Notes: QST, Jun 1949, p. 73.
Lafayette-Concord (1949 #949), p. 144.
QST, Jan 1950, inside back cover. (accessory socket added for Select-O-Ject)
Allied Radio catalog 1951 (copyright 1950), p. 139.
Single conversion superheterodyne circuit with calibrated bandspread for 80, 40, 20, 11, 10, and 6 meters, S-meter, ANL with adjustable threshold, AVC. AF filter and antenna trimmer. The crystal filter provides six steps of selectivity. Uses temperature compensation and voltage regulation for improved stability.
There is also an accessory socket for NFM-73 narrow band FM adapter, a tone control, and a phono input jack. Sensitivity better than 3.5 µV. Requires external 8 or 500Ω speaker.
Coverage: 540 kHz to 31 MHz, 48 to 56 MHz
IF: 455 kHz
Modes: AM, CW
Audio output: 3.5 watts, 8/500Ω
Power: 120 VAC, 83 watts
Tubes (13 total): (3) 6SG7, (1) 6AS7, (1) 6J5, (2) 6H6, (1) 6AC7, (2) 6SJ7, (1) 6V6, (1) 5Y3, (1) VR0150
References
Review. Radio Craft, Oct 1947, p. 32.
