Note
Ham Radio, Jun 1973, p. 45.
QST, Mar 1974, p. 148 (probably earlier)
The SB-50, is fully solid-state and weighs only 7 pounds. The transceiver is synthesized with variable frequency control of both receiver and transmitter with separate receiver incremental tuning control. It covers the band from 50.05 to 50.28 MHz.
The SB-50 is rated at 20 watts PEP input and 8 watts AM. Receiver sensitivity is better than 0.5 uV for 10-dB S + N/N and selectivity of 20 dB at 3 kHz and 60 dB at 6 kHz.
Additional features include a lighted S-meter which indicates receive signal strength as well as power output in both the SSB and AM mode, separately adjustable receiver incremental tuning and an external speaker connection.
References
Brief description. Ham Radio, Mar 1974, p. 58.