My schematic diagram of the Heathkit model CR-1 crystal radio. In many respects, this design operates on similar principles to the 'Trench Radios' of WW 1. Military radios of that day, such as the US Army's BC-14/SCR-54, also used antenna tuning, light coupling between stages, a tuned diode section and they operated on the same range of frequencies, 550-1600 KHz. I understand that these kits were very popular with Boy Scouts and were marketed as a kind of a 'Survivor's Radio' during the worst parts of the 'Cold War' when my government's Civil Defense planners expected an Atomic War with the USSR to break out at any time. With only a few CONELRAD stations on the air and with us few survivors trapped in 'bomb shelters' for months and years, with our entire civilization and economy wrecked, still, news and information would be available to any doomed citizen having one of these radios, even though there was no electricity and the battery operated radios had all gone dead. Doesn't that sound cozy? Doesn't that sound like fun? Well, at least we would be 'better off dead than red' and, being dead, we'd not have to 'live under godless communism.' |
Heathkit Cr 1 Crystal Radio Manual Pdf
Manual for the Heathkit HW-101 SSB amateur radio transceiver. Manual ID: 595-1277-18 Topics: manual, radio, amateur radio, heathkit. Collectible Crystal Radios. Collectible crystal radios are a part of history. Though not quite as robust or showy as their vacuum tube or transistor counterparts, these devices found their place in our culture by being fun activities the entire family could enjoy.