SR10 - Crystal Unit, short, thin pins same as HC-6/U They are smaller diameter pins than used in the DC34/35 typesĪnd also smaller diameter poins than the FT171B types. R5 - Marine type crystals with 3/4" pin spacing. HC-51/U - Crystal Unit, wire leads, same as HC-33/U but welded HC-50/U - Same as HC-49 but with rigid 0.040" pins. HC-49/US - Wire leads, shorter - sames as HC18/U but welded.
HC-48/U - Crystal Unit, thin pins, same as HC-6/U but welded.
HC-33/U - Crystal Unit, wire leads, same as HC-6/U HC-25/U - Crystal - Same as HC-49 but with rigid pins. HC-18/U - Crystal - same as HC-49/U but soldered. HC-13/U - Tall LF crystals, like HC-6/U - often 100 kHz calibrator. HC-6/U - Crystal, metal can, spacing 0.486", pin dia. HC-4/U - Crystal same as FT243, 2 pins, spaced 0.486" and. Spacing 1/2", pin diameter 0.093" like FT243 GE - General Electric made some unique cases with dimensions:ġ-1/8" X 9/16" X 1-1/2" tall with two pins In radios that used CR-1A crystals long after the CR-1A crystals HC-26/U - Same case body as FT-243 but with thicker (1/8")pins the sameĪs used in CR-1/A crystals. 0.125" can hold two crystalsįT-500 - HC-3/U Holder, 2 pins, spaced. (Used in BC611, BC1335 and most ham transmitters from the 1950s and 1960s.)įT-249 - 3-Pin Holder, pin dia. 750, "Banana Pins" heavy duty type, 50 MW, used with BC-610 transmitters etc. This is a very impressive-looking, and RARE crystal.įT-171 - Disk-type Holder with 5/16" pinsįT-171B - Spacing. Has two offset pins that protrude 0.5" long, and 0.25" diameter. X 5/8" long.įA-5 - Crystal Unit, short, thin pins same as HC-6/UįA-9 - Crystal Unit, short, thin pins same as HC-6/UįT-164 - Ceramic Body Holder, adjustable contact. 062 dia.ĬR-27/U - Crystal Unit, short, thin pins same as HC-6/UĬR-32/U - Crystal Unit, tall, thin pins same as HC-13/UĬR-37/U - Crystal Unit, short, thin pins same as HC-6/UĬR-48/U - Crystal Unit, thin pins, same as HC-6/UĬR-52/U - Crystal Unit, thin pins, same as HC-6/UĬR-81 - Crystal Unit, thin pins same as HC-6/UĬ*-40162 - Navy Xtal Unit, short version of CR-51/UĬR-55/U - Sub-Miniature Crystal, wire leadsĭC-10 - Crystal, commonly used in the BC-230 and BC-430 radios. Is offset by 7/8" from each othe other two.ĬR-18/U - Crystal Unit, short, thin pins same as HC-6/UĬR-23/U - Crystal Unit, short, thin pins same as HC-6/UĬR-24/U - Barrel-Type Crystal Holder, axial leads. Possibly also used in aircraft radios such as the BC-654A.ĬR-15/U - Crystal Unit, 3 pins - 1-5/8" X 1-3/16" X 2" tall.ģ pins are 1/8" dia. Pin spacing 0.5" and pin diameter is 0.125" X 11/16" long Used in SCR-522 & ARC-3 Military Aircraft VHF Radios.
Pin spacing 1/2" and pin diameter 1/8" X 11/16" long The three pins are each 1/8" diameterĬM-1 crystal holder is close in size to a DC-34, except for the pin diameter. There are other variants of this round crystal with different names made by Bliley and others.ĬHF-40130 - Navy style crystal holder for TCS receiver. It has two pins spaced 3/4" apart and approx. This is a round crystal with 1-3/8" diameter X 5/8" thick. There are other variants of this crystal with different names including R5 and Z30.ĬF5 - Crystal by HIPOWER. Used in Marconi CM11 transmitter, Hallicrafters HT18 transmitter and others. 0.093" X 3/8" longīY - crystal holder often associated with Marine Transmitters etc. (The "n" number may be one, two or three digits.)ĬR-4/U is FT-241 holder marked for and containing crystals cut forġ7P - Crystal Unit 1-1/8" wide X 3/8" X 1-1/8" tall. NOTES: DC-n are some of the earliest crystalsįT-n came next and superceded some DC-n numbers.ĬR-n/U came last and often consisted of FT-241 or FT-243 holders marked forĪnd containing crystals cut for specific radios or radio sets.
#Quartzcrystal characteristics ham pdf#
Orginally compiled by Brian Carling, AF4K (SK) Maintained and expanded by Steve Johnston, WD8DASīliley Engineering Bulletin 1943 (highly useful and interesting pdf booklet) RADIO CRYSTAL HOLDERS, COMPANIES, and HISTORY Radio Crystal Holder Types, Companies, and History
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