Crystal (Quartz) FT-241
MILITARY U.S. (different makers for same model)
- Country
- United States of America (USA)
- Manufacturer / Brand
- MILITARY U.S. (different makers for same model)
- Year
- 1943 ?
- Category
- Radio part (not a module)
- Radiomuseum.org ID
- 177437
FT-241 in box, fitted in BC-604
inside the FT-241
- Wave bands
- - without
- Power type and voltage
- No Power needed
- Loudspeaker
- - - No sound reproduction output.
- Material
- Various materials
- from Radiomuseum.org
- Model: Crystal FT-241 - MILITARY U.S. different makers
- Shape
- Miscellaneous shapes - described under notes.
- Dimensions (WHD)
- 29 x 39 x 12 mm / 1.1 x 1.5 x 0.5 inch
- Notes
-
FT-241 crystals, black series, were used in the BC-604 with a working frequency 20 - 27.9 MHz, 80 "channels" numbered 0 - 79. Their fundamental frequency is 370.370 - 516.666 kHz, to be multiplied by 54.
FT-241 crystals, brown series, were used in the BC-684 with a working frequency 27 - 38.9 MHz, 120 "channels" numbered 270 - 389. Their fundamental frequency is 375.000 - 540.277 kHz, to be multiplied by 72.This crystal type is far not as indestructible as the FT-243 type. The small silvered crystal-plate is welded-connected with two spring-type wires, but these connections are often broken after many years.
These crystals have a very interesting fundamental frequency range to compose sharp IF- filters around 450 - 475 kHz.
- Net weight (2.2 lb = 1 kg)
- 0.010 kg / 0 lb 0.4 oz (0.022 lb)
- Author
- Model page created by Jan Terranea. See "Data change" for further contributors.
- Other Models
-
Here you find 398 models, 350 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from MILITARY U.S. (different makers for same model)
Collections
The model Crystal (Quartz) is part of the collections of the following members.