The S-120 was an entry level shortwave radio that was introduced in 1961. It replaced the previous S-38 series of receivers. This radio featured a totally modern-looking cabinet, 4 bands, internal speaker, and a BFO (Beat Frequency Oscillator) which was necessary for the resolution of single sideband signals. The radio even came with its own … Continue reading "Hallicrafters AM Broadcast & Shortwave Receiver, Model S-120"  →

It can receive the AM broadcast band (540 KHz to 1650 KHz), and 3x shortwave bands covering 1.65-5.1 MHz, 5-14.5 MHz, and 13-31 MHz. It has five vacuum tubes. The tubes are a 12SA7: Oscillator & Mixer, 12SK7: IF Amplifier, 12SQ7: 1st Audio Amplifier, and Detector, a 50L6: Audio Amplifier, and a 35Z5 Rectifier in … Continue reading "Hallicrafters AM Broadcast & Shortwave Receiver, Model SR10A"  →

This Superheterodyne Portable AM Broadcast Receiver was made by RCA Victor in 1940 at a cost of $20. It can receive AM broadcasts in the normal frequency range of 540 kHz to 1.6 MHz. It uses a “D” 1.5V flashlight battery to power the filaments, and a 67.5B “B” for the rest of the circuitry. … Continue reading "RCA Model BP-10 Portable Broadcast Receiver"  →