![]() The S-129 is a cost-reduced version that eliminates the S-meter and crystal filter and, of course, the broad and sharp selectivity settings afforded by the crystal. The rectifier is half-wave using a silicon diode. ![]() Tubes are 6DC6 for RF amp, 6EA8 as mixer oscillator, another 6EA8 for first IF and crystal selector, 6BA6 as second IF, 6AL5 as AM detector/noise limiter, 6BE6 as BFO/ product detector, and 6GW8A as combination audio preamp and output. The smaller circular dial on the left is for main tuning. The long horizontal slide-rule dial is bandspread. Bandspread for the SX-130 is calibrated for the 80, 40, 20, 15, and 10 meter ham bands. ![]() The small gap in coverage from 1610 to 1725 KHz is necessary because the IF is 1650 KHz. The SX-130 is a 4 band communications receiver covering AM broadcast from 535 to 1610 KHz and shortwave from 1.725 to 31.5 MHz. Hallicrafters SX-130 receiver Hallicrafters SX-130 receiver
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