Crystal holder - Quartz - Quarz FT243

MILITARY U.S. (different makers for same model)

Data
Forum
Pictures
Collections

  • Year
  • 1943–1964 ?
  • Category
  • Radio part (not a module) 
  • Radiomuseum.org ID
  • 125717

 Technical Specifications

  • Material
  • Special material, described in the notes.
  • from Radiomuseum.org
  • Model: Crystal holder - Quartz - Quarz FT243 - MILITARY U.S. different makers
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 21 x 29 x 11 mm / 0.8 x 1.1 x 0.4 inch
  • Notes
  • Steckquarze in Duroplastgehäusen, z.T. mit Metallfrontplatte, Frequenzbereich ca. 1 - 10 MHz, Kanalquarze f. Militär-Geräte, überwiegend in den USA produziert.

    Crystal Holder, 2 pins, spaced 0.486" (12.3 mm) and pin diameter 0.093" (2.4 mm), pin length 3/8" (9.5 mm).
  • Net weight (2.2 lb = 1 kg)
  • 0.018 kg / 0 lb 0.6 oz (0.04 lb)
  • Author
  • Model page created by Hans-Peter Bölke. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Crystal holder - Quartz - Quarz is part of the collections of the following members.

 Forum

Forum contributions about this model: MILITARY U.S.: Crystal holder - Quartz - Quarz FT243

Threads: 1 | Posts: 4

The left x-tal is not a FT-243, but similar and it can be used in a BC-620 with 79 channels, 100 kHz separated, in the range 20,0-27,9 MHz. These FT-243 x-tals are numbered after their channel,  so channel no.65 means the fundamental frequency of 7873,3 kHz multiplied by 3 + the IF frequency of 2880 kHz, giving  a working frequency of 26500 kHz.

The middle and right x-tals were used in the BC-659 and BC-1335 with 120 channels, 100 kHz  separated, in the range 27,0-38,9 MHz. These x-tals are numbered after their working frequency, devided by 100, so channel 292 means the fundamental frequency of 6225 kHz multiplied by 4 + the IF frequency of 4300 kHz, giving a working frequency of 29200 kHz.

Jan Terranea, 17.Jun.10

Weitere Posts (4) zu diesem Thema.