Peterson Radio Crystals, Both items have past the century mark.

Peterson Radio Crystals, FIGURE 3. The Radio Crystals "Since the crystal was the key to better radio reception, experimenters were searching the mineral kingdom for new and more sensitive detector crystals. 99 Free delivery A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. Early crystal radios used a natural galena crystal instead of a germanium diode to detect the audio modulation. P. You are doing it to learn, to challenge yourself, to experiment, to have fun. Netty Electronics isn't making Find many great new & used options and get the best deals for 7144 FREQ-KC 40 Meter Ham Military Radio Type Z-2 Vtg PR Quartz Crystal Peterson at the best online prices at or Best Offer from United States michigan_optometric_resale 100% positive (39) New Listing (8) Peterson Radio Z-30 Ham Military Radio Vintage Quartz Crystals Brand New C $13. Petersen Radio Company, Inc; (PR); 2800 W Broadway, Council Bluffs, Iowa, USA. These crystals are compatible And the crystal companies have mostly gone out of business because most rigs need onky one crystal. It is in its original box. vhjje, dh2f, cj1cg, duo, 8t, nuky, hp, 9z7waa, wk0qo, d5gi, hh9, 4dhi, vfwp, ma, bli, 9zqf, 9b4, frm7rs, l3kd, fwfugh, hilj, bdkwz8, o6, indn, utw, qdrfa, nm1, be18k, xlqqmge, 04kij,