ISB Adaptor RA-98
Racal Engineering / Instruments / Electronics Ltd., Bracknell
- Produttore / Marca
- Racal Engineering / Instruments / Electronics Ltd., Bracknell
- Anno
- 1960 ??
- Categoria
- Miscellanea (Altro, Varie) - vedere nelle note
- Radiomuseum.org ID
- 106381
- Numero di tubi
- 16
- Principio generale
- ZF/IF 100/18 kHz
- Gamme d'onda
- - senza
- Tensioni di funzionamento
- Alimentazione a corrente alternata (CA) / 100-125 / 200-250 Volt
- Altoparlante
- - - Nessuna uscita audio.
- Materiali
- Mobile di metallo
- Radiomuseum.org
- Modello: ISB Adaptor RA-98 - Racal Engineering /
- Forma
- Rack
- Dimensioni (LxAxP)
- 483 x 133 x 355 mm / 19 x 5.2 x 14 inch
- Annotazioni
- 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 netto
- 17.3 kg / 38 lb 1.7 oz (38.106 lb)
- Bibliografia
- Racal Handbook, Rinus Jansen
- Autore
- Modello inviato da Martin Bösch. Utilizzare "Proponi modifica" per inviare ulteriori dati.
- Altri modelli
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In questo link sono elencati 113 modelli, di cui 62 con immagini e 18 con schemi.
Elenco delle radio e altri apparecchi della Racal Engineering / Instruments / Electronics Ltd., Bracknell
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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