Note
QST, Oct 1959, p. 1.
Single conversion superheterodyne. Replaces the S-53A. Features include bandspread, built-in speaker, BFO, ANL, variable sensitivity, tone control, and phono input. Note the gaps on coverage.
The SX-107 was made in two versions, referred to as Mark l and Mark ll. There were a few small differences:
Mark l has a 2-prong headphone jack, and a spreker-phone switch.
Mark ll has a 1//4 inch phone jack, no speaker-phone switch, no phono input jack, and adds an external amp jack.
Coverage: 540 to 1630 kHz, 2.5 to 31 MHz, 48 to 54.5 MHz
IF: 455 kHz
Modes: AM, CW
BFO
ANL
Built-in speaker
Audio output: 1 watt, 3.2Ω
Power: 120 VAC, 50 watts
Tubes (8 total): (1) 5Y3, (1) 6C4, (3) 6BA6, (1) 6H6, (1) 6SC7, (1) 6K6
