PRC-8 RT-174A / PRC-8
MILITARY U.S. (different makers for same model)
- País
- Estados Unidos
- Fabricante / Marca
- MILITARY U.S. (different makers for same model)
- Año
- 1951–1960 ?
- Categoría
- Transceptor militar
- Radiomuseum.org ID
- 175884
from manual tm11-612
Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.
- Numero de valvulas
- 14
- Principio principal
- Transceiver; ZF/IF 4300 kHz; 1 Etapas de AF
- Número de circuitos sintonía
- 9 Circuíto(s) FM
- Gama de ondas
- Onda Corta solamente
- Tensión de funcionamiento
- Baterías recargables o pilas / 1,5 & 6 & 67,5 & 135 Volt
- Altavoz
- - Este modelo usa amplificador externo de B.F.
- Material
- Metálico
- de Radiomuseum.org
- Modelo: PRC-8 RT-174A / PRC-8 - MILITARY U.S. different makers
- Forma
- Portátil > 20 cm (sin la necesidad de una red)
- Ancho, altura, profundidad
- 265 x 77 x 470 mm / 10.4 x 3 x 18.5 inch
- Anotaciones
- The RT-174A FM-transceiver, somewhat different from the RT-174, is the main part of PRC-8, only in literature we can find the name PRC-8-A, on the equipment the -A suffix is never present.
Frequency range is 20 - 28 MHz, FM (F3), 1,2 W.
The upper part of the Citizen band could be received, but no NBFM as the 6 dB selectivity is 75 kHz. VFO-tuning with a crystal-calibrator oscillator giving 4,3 MHz checkpoints. It has 4 IF amplifiers and a pulse sweep generator to control the transmit frequency.
All controls and antenna-connections are at the top.
The set was designed for field use with a multi-voltage battery BA-279, or for vehicular use with a 24 volts PSU and audio-amplifier AM-598. The net weight is inclusive the 3,65 kg battery. Transmit power is about 1,2 watts. Antenna 50 ohm BNC and short or long vertical.
All tubes, exept the 5A6, are of the subminiature 5BA Special Quality type. The complete IF circuits including the SQ- tubes are housed in sealed metal-tubes with B7G-pins, as well as the discriminator-circuit and the pulse sweep generator.
Similar, but with different frequency ranges are RT-175A / PRC-9; RT-176-A / PRC-10 and the crystal controlled RT-339 / PRC-28.
- Peso neto
- 8.420 kg / 18 lb 8.7 oz (18.546 lb)
- Procedencia de los datos
- -- Original-techn. papers.
- Mencionado en
- TM11-612 /1951. TM11-612/1954. TM11-4065 A/1956.
- Autor
- Modelo creado por Jan Terranea. Ver en "Modificar Ficha" los participantes posteriores.
- Otros modelos
-
Donde encontrará 399 modelos, 351 con imágenes y 210 con esquemas.
Ir al listado general de MILITARY U.S. (different makers for same model)
Colecciones
El modelo PRC-8 es parte de las colecciones de los siguientes miembros.
Contribuciones en el Foro acerca de este modelo: MILITARY U.S.: PRC-8 RT-174A / PRC-8
Hilos: 1 | Mensajes: 1
I have no reproducable schematic on the PRC-8. As far as I know the difference with the PCR-9 and PRC-10 is in the matching circuit to the whip antenna. Anyway it should have its own schematic, because my neat schematics refer only to to the PRC-9 and PRC-10.
The PRC8 omits C-12, an extra antenna-tuning varco, that is worm-geared connected to the reduction-gear of the 5-section tuning-varco in the PRC-9 and PRC-10. The difference can be seen in the attachments.
Anexos
- tuning gear in PRC-9 and PRC-10 (31 KB)
- tuning gear in PRC-8 (22 KB)
Jan Terranea, 03.Jun.10