Hf Radio Ham Radio License Ham Radio Equipment Radio Antigua Transistor Radio Radio Frequency Antique Radio Sony Speakers Forward Special Collections in Media & Culture, formerly and still informally known as the 'Broadcasting Archives,' is located in Hornbake Library on the campus of the University of Maryland in College Park. Crystal Radio Plans and Circuits and parts of books This section contains 174 articles at the present time (articles are numbered) Many articles have multiple plans! Information Donated In Part By The Following Persons Mike Tuggle (Hawaii), Richard O'Neill, Lou Blasco, Mike Peebles, Andy Klute.
Vintage Heathkit Crystal Receiver Model R-1
It doesn’t get much simpler or old school than this. No batteries or power source required, just a few basic electronic components convert AM Broadcast radio signals into audio. Unfortunately, the original Acme headphones don’t appear to be working, but I got some good results connected to a microphone input on an audio mixer. With a little bass boost from the EQ, the audio sounded pretty good.
Test antenna was a multi-trap dipole designed for HF and house wiring ground connection. Not the ideal setup of a longer wire and earth ground, but it still pulled in about a half dozen radio stations across the band, some quite strong, some might have been out of state.
Tuning takes a little getting used two, there are two tuning knobs which must be operated and peaked individually to maximize signal. If you’re accustomed to using a standard antenna tuner, you’ll get the hang of it pretty soon.
Kenn Ranous
PS: This radio is sold. Sorry. Wish I had more of them!