ISB Adaptor RA-98
Racal Engineering / Instruments / Electronics Ltd., Bracknell
- Land
- Grossbritannien (UK)
- Hersteller / Marke
- Racal Engineering / Instruments / Electronics Ltd., Bracknell
- Jahr
- 1960 ??
- Kategorie
- Diverses (Sonstiges) - siehe Bemerkungen
- Radiomuseum.org ID
- 106381
- Anzahl Röhren
- 16
- Hauptprinzip
- ZF/IF 100/18 kHz
- Wellenbereiche
- - ohne
- Betriebsart / Volt
- Wechselstromspeisung / 100-125 / 200-250 Volt
- Lautsprecher
- - - Kein Ausgang für Schallwiedergabe.
- Material
- Metallausführung
- von Radiomuseum.org
- Modell: ISB Adaptor RA-98 - Racal Engineering /
- Form
- Rack
- Abmessungen (BHT)
- 483 x 133 x 355 mm / 19 x 5.2 x 14 inch
- Bemerkung
- 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).
- Nettogewicht
- 17.3 kg / 38 lb 1.7 oz (38.106 lb)
- Literaturnachweis
- Racal Handbook, Rinus Jansen
- Autor
- Modellseite von Martin Bösch angelegt. Siehe bei "Änderungsvorschlag" für weitere Mitarbeit.
- Weitere Modelle
-
Hier finden Sie 113 Modelle, davon 62 mit Bildern und 18 mit Schaltbildern.
Alle gelisteten Radios usw. von Racal Engineering / Instruments / Electronics Ltd., Bracknell
Forumsbeiträge zum Modell: Racal Engineering /: ISB Adaptor RA-98
Threads: 1 | Posts: 1
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