ISB Adaptor RA-98
Racal Engineering / Instruments / Electronics Ltd., Bracknell
- País
- Gran Bretaña (GB)
- Fabricante / Marca
- Racal Engineering / Instruments / Electronics Ltd., Bracknell
- Año
- 1960 ??
- Categoría
- Miscelanea, objetos de propaganda, pines, banderines, ceniceros, otros, etc.
- Radiomuseum.org ID
- 106381
- Numero de valvulas
- 16
- Principio principal
- ZF/IF 100/18 kHz
- Gama de ondas
- - no hay
- Tensión de funcionamiento
- Red: Corriente alterna (CA, Inglés = AC) / 100-125 / 200-250 Volt
- Altavoz
- - - No hay salida de sonido.
- Material
- Metálico
- de Radiomuseum.org
- Modelo: ISB Adaptor RA-98 - Racal Engineering /
- Forma
- Rack
- Ancho, altura, profundidad
- 483 x 133 x 355 mm / 19 x 5.2 x 14 inch
- Anotaciones
- Independent Side Band Adaptor matching the RA-17 family receivers, allows reception of USB, LSB and ISB signals.
This adaptor is equipped with a motor driven AFC system locking on pilot carrier for ISB / ECSS reception. The AFC must kept switched off for SSB signals without any carrier.
The 100 kHz 3rd IF of the RA-17 is mixed with an LC (only in variant RA-98D crystal controlled) 118 kHz oscillator signal for a new IF of 18 kHz. By mixing with another 18 kHz oscillator signal, the audio information of both sidebands is extracted.
Variants: RA-98A / B similar with different connectors, RA-98C with extended low frequency audio response to 150 Hz for receiving commercial broadcast transmissions (ISB feeders), RA-98D with internal crystal controlled 118 kHz oscillator for reception of SSB signals without carrier, RA-98E with an additional transistorized coupling circuit for use with transistorized receivers (as RA-1217).
- Peso neto
- 17.3 kg / 38 lb 1.7 oz (38.106 lb)
- Mencionado en
- Racal Handbook, Rinus Jansen
- Autor
- Modelo creado por Martin Bösch. Ver en "Modificar Ficha" los participantes posteriores.
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Variants of the RA-98 SSB Adaptor:
RA-98A: British type coaxial connectors, no internal crystal controlled 188 kHz oscillator,
need external 118 kHz source for hich stability ECSS operation.
RA-98B: US typ coaxial connectors and Monitor jack socket, no internal crystal controlled 188 kHz oscillator
RA-98C: broadcast version of R-98B
RA-98D: with internyl crystal controlled 118 kHc oscillator with crystal oven
switched by AGC - control knob.
RA-98E: with transistorized coupling circuit for use with transistorized receivers as RA-217 and RA-1217
RA-98F: RA-98A modified for use with RA-317.
RA-98A: British type coaxial connectors, no internal crystal controlled 188 kHz oscillator,
need external 118 kHz source for hich stability ECSS operation.
RA-98B: US typ coaxial connectors and Monitor jack socket, no internal crystal controlled 188 kHz oscillator
RA-98C: broadcast version of R-98B
RA-98D: with internyl crystal controlled 118 kHc oscillator with crystal oven
switched by AGC - control knob.
RA-98E: with transistorized coupling circuit for use with transistorized receivers as RA-217 and RA-1217
RA-98F: RA-98A modified for use with RA-317.
Martin Bösch, 02.Oct.06