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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Vintage Heathkit CR-1 Crystal Receiver Kit
Cool Product Report

Featured Product Archive

The inventions and products featured on these pages were chosen either for their uniqueness in the RF engineering realm, or are simply awesome (or ridiculous) enough to warrant an appearance.

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |

Vintage Heathkit CR-1 Crystal Receiver Kit 1958 Catalog (p40) - RF Cafe Cool Product

Vintage Heathkit CR-1 Crystal Receiver in the Heathkit 1958 catalog (p40).

This vintage Heathkit CR-1 Crystal Receiver kit is one the latest unbuilt Heathkit kits which appeared on eBay, and can still be found there occasionally both in kit form and fully built sets. I have been saving the images in order to preserve the history. The constantly growing list is at the lower right. A PDF version of the Heathkit CR-1 Crystal Receiver Manual can be found here, but I captured the pages (below) in case it disappears someday. Note the information included on the operation of detectors and oscillators.

The copyright on the manual is 1956, and it appears in the 1958 Heathkit catalog for $7.95 ($75.10 in 2021 money per the BLS).

From the catalog page: "This crystal radio is just the ticket for construction by young people interested in radio or electronics - yet it is definitely not a toy. Employs high-quality standard components throughout. It is even usable as an AM tuner in high fidelity applications. Covering from 540 to 1600 kc, the CR-1 has two high-Q tank circuits that employ ferrite core coils and conventional air tuned capacitors. Capacitors are tuned individually to the desired station. The receiver is most attractively styles in a black Bakelite case. Uses a sealed germanium diode for detection - no critical "cats whisker" adjustment. Includes a pair of high impedance earphones. Requires no external power. Could prove extremely valuable for emergency reception of civil defense signals, should there be a power failure. The construction manual provides the builder with the basic fundamentals of signal reception so that he understands how the crystal receiver functions."

Heathkit CR-1 Crystal Receiver Kit Parts - RF Cafe

Heathkit CR-1 Crystal Receiver Kit Parts

(eBay photo)

Heathkit CR-1 Crystal Receiver Assembled - RF Cafe

Heathkit CR-1 Crystal Receiver Assembled

 (eBay photo)

Heathkit CR-1 Crystal Receiver Front Cover - RF Cafe

 Heathkit CR-1 Crystal Receiver Front Cover  (eBay photo) 

Heathkit CR-1 Crystal Receiver Manual Specifications - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Specifications

Heathkit CR-1 Crystal Receiver Manual Oscillator Tutorial - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Oscillator Tutorial - Page 4

Heathkit CR-1 Crystal Receiver Manual Oscillators - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Oscillators - Page 6

Heathkit CR-1 Crystal Receiver Manual Proper Soldering 
Technique - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Proper Soldering Technique - Page 8

Heathkit CR-1 Crystal Receiver Manual Components Layout - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Components Layout - Page 10

Heathkit CR-1 Crystal Receiver Manual Instructions p12 - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Instructions - Page 12

Heathkit CR-1 Crystal Receiver Manual Component Identification - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Component Identification - Page 14

Heathkit CR-1 Crystal Receiver Manual Schematic Symbols - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Schematic Symbols (IRE) - Inside Rear Cover

Heathkit CR-1 Crystal Receiver Manual Rear Cover - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Rear Cover

Heathkit 1958 Catalog Cover - RF Cafe

Heathkit 1958 Catalog Cover

Heathkit CR-1 Crystal Receiver Chassis - RF Cafe

  Heathkit CR-1 Crystal Receiver Chassis

(eBay photo) 

Heathkit CR-1 Crystal Receiver Kit Manual Molded Mica 
Capacitors - RF Cafe

 Heathkit CR-1 Crystal Receiver Kit Manual

Molded Mica Capacitors Identification

Inside Front Cover

Heathkit CR-1 Crystal Receiver Schematic - RF Cafe

Heathkit CR-1 Crystal Receiver

Schematic

Heathkit CR-1 Crystal Receiver Manual Instrument Description - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Instrument Description - Page 3

Heathkit CR-1 Crystal Receiver Manual Oscillators p5 - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Oscillators - Page 5

Heathkit CR-1 Crystal Receiver Manual Amplitude Modulation - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Amplitude Modulation - Page 7

Heathkit CR-1 Crystal Receiver Manual Building Instructions p9 - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Building Instructions - Page 9

Heathkit CR-1 Crystal Receiver Manual Antenna Installation - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Antenna Installation - Page 11

Heathkit CR-1 Crystal Receiver Manual Service - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Service - Page 13

Heathkit CR-1 Crystal Receiver Manual Tuning Data - RF Cafe

 Heathkit CR-1 Crystal Receiver Manual

Tuning Data - Page 15

Heathkit products were well known for the completeness of its instruction manuals, with clearly illustrated instructions. During the writing and editing process, Heathkit employees were given pre-production kits to take home and build, while annotating any difficulties or errors encountered. Doing so helped minimize the situation where the writer inadvertently assumes his own familiarity with the process is shared by the customer. Having built a few Heathkit products myself in the 1970s when I did not have a lot of experience with electronics assembly, I can attest to the user friendliness of the instructions. Heathkit still sells many of its vintage manuals for around $15, which is what you would pay on eBay.

 

Contact Info

Heath Company (Heathkit)

Operations: PO Box 15, Ottsville, PA 18942

R&D/Mfg: PO Box 3115, Santa Cruz CA 95063

Phone: +1 (831) 480-4368

E-Mail: info.2015@2015.heath.company

 

 

Posted August 13, 2021

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Triad RF Systems Amplifiers - RF Cafe
 

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