There is no ON/OFF switch nor power source required as this radio uses only the broadcast energy as its power source. Sold over a period of about five years (1957 - 1962) This radio, like most, tuned the AM broadcast band from 540 KHz to 1600 KHzAfter hooking up an antenna and ground and a high impedance (2000Ω ?) headset to the re- spective binding posts, one would set the an- tenna switch to the area of the station they wanted to tune in (high, medium or low fre- quency) and tune for a signal with the DET tuning, adjusting the ANT tuning for the maximum signal and switching the ANT switch if the tuning control ran out of effectiveness. The detector circuit is just a crystal di- ode (type currently unknown) and relies on the built-in capacitance of the headset to augment detection. The two tuning controls are 365 pF (μμf in those days) variable capacitors and the ANT switch (middle control) switches in additional 350 pF capacitors across the ANT tuning variable ca- pacitor. The three controls, left to right, are ANTenna tuning, ANTenna switch and DETector tuning. We are the host of the crystal radio receiving contest.This page contains a little information about us and our crystal set. The left set of binding posts are for the ANTenna and GrouND (ground) and the right set are for the PHONES. Welcome to the Birmingham, Alabama Crystal Radio Group website. The CR-1 has two sets of binding posts and three controls. It is built in a 6 x 3 x 2 inch deep plastic box, the same size as the original. This crystal radio is a homemade copy of the Heathkit CR-1 Crystal Radio from the 1950's. The case is bakelite with a gray-metal top plate that is the front panel. The Heathkit Crystal Radio My copy of the Heathkit Crystal Radio of the 50's. The Heath CR-1 measures 6" x 3" x 2" wide. Pins 0.093' diameter Type CR-18/u (HC6/U) metal can crystals available for most popular Heathkit ranges from 1.8 - 148 MHz I have almost ALL of these available - some in quantities. Dimensions: 1.5' X 0.75' - and the pins are spaced 0.486' apart. It is double tuned and drives high impedance headphones. your radio is calibrated and right on the frequency every time.
The CR-1 is a simple kit that uses a sealed crystal diode instead of a "cats- whisker". Heathkit Cr 1 Crystal Radio Manual Digitech Jamman Driver For Mac The Meters Look Ka Py Py Zip Jade Empire Best Styles Westward Torque Wrench Manual Akai Professional Mpc Studio Black Software 1.0.0 For Mac How To Install Arcane Dimensions Hirens Boot Cd Latest Version Mail Act On 3.2. The CR-1 is a simple kit that uses a sealed crystal diode instead of a 'cats- whisker'.
The idea was to have limited selectivity, allowing full fidelity, and no distortion-adding active circuits ahead of the detector. Hi-fi was a big deal in the 1950s, and AM broadcasters played classical and jazz music, as FM was still in its infancy. This radio, like most, tuned the AM broadcast band from 540 KHz to 1600 KHz (kc in those days). Miller introduced their crystal tuner, on which the CR-1 was based, as a hi-fi tuner. Great condition no chips no scratches great collector item! The Heathkit CR-1 Over a period of about five years (1957 - 1962) Heathkit also sold a crystal radio set kit, the CR-1.