The past year has seen some serious and credible alternatives to the venerable superheterodyne receiver architecture. Zero-IF and direct-to-baseband architectures, implemented by new ICs, have become ...

What would EH Armstrong say? The FM (and superheterodyne) pioneer never envisioned an all-CMOS, single-IC FM tuner, such as the Si470x series from Silicon Laboratories. This highly integrated, 4×4-mm ...

Marked: (Plate) "Radiola Superhetrodyne Model AR812 No. 145451, Range 220-550 Meters. Patented: 1/21/08; 3/5/12; 10/6/14; 7/3/17; 10/22/18; 6/27/20; 6/8/20; 2/18/16 ...

Manufacturer unknown. "Model 7." A seven tube superhetrodyne receiver employing UX-199 triodes. Controls include a two gang tuning capacitor. Panel meter measures filament and plate voltages. Three ...