Homebrew Crystal Radios for Sale


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Old Homebrew MRL Crystal Radio

This is a kit crystal radio that was sold as a kit by MRL (Modern Radio Labs) which was a one man operation back 50 years ago and they had different crystal radio kits, parts and plans that hobbyists could build. This was their most popular set, the MRL 2 or 2-A, which has a tapped coil, plus a galena catwhisker detector on the front of the panel, as well as Fahenstock clips on the back to use a diode as an option instead of using the catwhisker. This one looks well built and I got stations loud and clear on it. Will just need headphones and antenna and ground to get it playing for you. $77


Heathkit CR1 Crystal Radio clone

 This is a clone of a Heathkit  CR-1 crystal set I made for fun but need to pass it along. It simulates the CR-1 circuit very closely and performance is hard to tell from the original item. I spent many hours on this one and the price hardly reflects the effort that went into making it. You can get Heathkit performance for about half of what you would pay for the real thing. $76 

Another Prototype similar to the Heathkit using toroid coil

This is a dual tuned crystal set made in a box like the CR-1, just a fun prototype I made a few years back. It pulls in AM stations loud and clear. $54 (about what the parts cost)

Miller 595 Functional Clone

This is a prototype radio I built using the same circuit as the Miller 595 crystal tuner below. It utilizes toroidal tuned coils for high efficiency and the same dual tuned bandpass circuit as the original Miller. Use with high impedance headphones or amp. $78

Miller Model 595 High Fidelity AM tuner crystal radio

The Miller 595 High Fidelity Tuner is actually a dual tuned circuit crystal radio praised as the most selective crystal radio ever made. This is made possible by the dual tuned bandpass circuit and the vernier gear reduction tuning drive mechanism. This set is in good working condition, and the cosmetic condition is good or better with some minor scratches on top and fading on the faceplate. Tested and working and I can pick up 10 or so stations here with a 15 foot indoor wire antenna. The original output cord can plug into an amplifier or you can hook up high impedance headphones. $125 


Crystal  Radio Detector Stand
NEW REPRODUCTION OF A 1930S CRYSTAL RADIO DETECTOR STAND
MADE AS ORIGINAL WITH SOLID BRASS  AND OLD STYLE 2 X 3 PHENOLIC BASE.
COMPLETE WITH BRASS TESTED CATWHISKER BUT LESS CRYSTAL.
PRICE IS $39.00 WITH PREPAID SHIPPING TO THE US.
   
CONTACT dick korf
threepalms13@gmail.com


Reproduction Crystal Detector with catwhisker and mineral selection


Click photo for a larger view.
Nice reproduction of 1920's style detector on a 2"x2" solid oak base. Features a large 5/8" diameter brass ball-and-sleeve assembly in a tight, spring brass bracket that never comes loose, or needs realigning. Precision ball-and-sleeve provides silky smooth movement with no pull or backlash. Includes a selection of loose minerals., catwhisker wire, printed instructions, and a history of the mineral detector. $24.95 plus shipping. These are available directly from the manufacturer, Larry Pizella, but I don't have anymore is stock, so just click HERE to see the order page for detectors directly from the maker.


 


Simple Loose Coupled Crystal Radio with Headphones #4

This is a simple little crystal set made on a nicely finished breadboard type plaque, has a 2 circuit loose coupled circuit, with a diode, variable capacitor with dial knob, and Fahnstock clips for the antenna, ground and headphone connections. Complete with Cannon Alnico 1000 ohm high impedance single sided headphones. Just hook up antenna and ground and it picks up loads of AM stations here. $39SOLD LD

One Tube Shortwave Regenerative Radio Kit with Submini Tube.

This is a kit of parts to make a one tube regenerative shortwave radio based on a 6418 subminiature tube. It includes all the parts needed to make the radio as shown above, with vintage National porcelain tuning condenser new old stock in original box, Johnson trimmer capacitor, ferrite toroid coil core, breadboard, and all necessary electronic components, hardware, wire, and a pair of Newcomb high impedance headphones. There is a set of detailed instructions, plus schematic and diagrammatic sketches to aid construction. I have enough parts for 4 sets right now, may be some variation in the knobs available. $49SOLD OUT
  Inquire if interested and I should be able to put together the parts for another kit but am out of the variable capacitors now, can provide the submini 6418 tubes for $2.50 each, also have some other submini tubes that would work.

Below is a photo of a completed set, using slightly different parts. The frequency range as tested was 5.5-9 MHz, but the coil can be modified to other frequencies.

 


 

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Headphone Heaven (Headphones for Sale)

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