CANADIAN MARCONI CRYSTALS
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| Above and below: These FT-164 crystals were known to have been used in MF or LF transmitters. The two large pins are offset with one being higher than the other. The red crystal is cut for 417 KHz while the black Marconi crystal is cut for 417 KHz. THe FT-164 crystal is known to have been used in Press Wireless PW-15 transmitters. (Photos by Reed Park VE1NU) |
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| Tan coloured
crystal holder. (Photo by Pierre Lewis)
Dimensions:
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| Type 5MA crystal example. The 5MA width is: 1 9/16 ", the height is 2 1/16", and the thickness is; 1 3/16'. The distance between pins is: 3/4" (Photo by Lewis Bodkin) |
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| This is the black case crystal holder that is very common and was produced by Candian Marconi in huge quantities. The other case markings are S 8860 and ZA 27616. |
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| Type BY Case dimensions are: 1.625" wide x .625" thick x 1.75" deep. Pin spacing is 0.75" Pin length is .5625" (Both photos above by Jerry Proc) |
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| Crystals were often packed with silica gel to absorb moisture during transportation. (Photo by Lewis Bodkin) |
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| Canadian Marconi made the ever so popular CR18/U crystals.The width of the crystal holder 11/16 ", the height is 3/.4", and the thickness is: 5/16". (Photo by Lewis Bodkin) | This is a dissected view of a CR18/U overtone crystal cut for 118.50 MHz. Click on image to enlarge. (Photo by Jerry Proc) |
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| This particular crystal one was housed in a holder resembling an 8 pin, single ended metal tube Click on image to enlarge. (Photo by Jerry Proc) |
Contributors and Credits:1) E. Reed T. Park VE1NU <ertpark003(at)gmail.com>
2) Pierre Lewis <leware(at)videotron.ca>
3) Gregory Farrell <gregf(at)pon.net>
4) Lewis Bodkin
Sept 23/21