RA-1772

Racal Engineering / Instruments / Electronics Ltd., Bracknell

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  • Year
  • 1978–1981
  • Category
  • Commercial Receiver (may include amateur bands)
  • Radiomuseum.org ID
  • 109219

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Superhet, double/triple conversion
  • Wave bands
  • Broadcast, Long Wave and more than two Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-125 / 200-250 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Power out
  • 1 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: RA-1772 - Racal Engineering /
  • Shape
  • Rack
  • Dimensions (WHD)
  • 483 x 178 x 410 mm / 19 x 7 x 16.1 inch
  • Notes
  • Commercial receiver, coverage 15 - 30000 kHz, AM, USB/LSB, CW;
    digital LED readout, minimal tuning steps 10 Hz, standard bandwidths 8 / 3 / 0.3 kHz, several configurations;
    optional 9400 standard or 9420 high stability frequency standard with crystal oven, optional ISB, FSK and AFC circuits.
  • Net weight (2.2 lb = 1 kg)
  • 21 kg / 46 lb 4.1 oz (46.256 lb)
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model is part of the collections of the following members.

Museums

The model can be seen in the following museums.

 Forum

Forum contributions about this model: Racal Engineering /: RA-1772

Threads: 1 | Posts: 1

the complete designation of RA 1771 and 1772 receivers alows to identify the mounted optional components:
format as follows:
1st suffix / 2nd suffix / 0 / fourth suffix / fifth suffix / sixth suffix

1st suffix: filters fitted (6 available slots)
A: symmetrical 0,3 / 3 / 8 kHz, sideband filters USB 3 / LSB 3 kHz
B: symmetrical 0,3 / 1 / 8 kHz, sideband filters USB 3 / LSB 3 kHz
C: symmetrical 0,3 / 1 / 3 / 8 kHz, sideband filters USB 3 kHz
D: symmetrical 0,3 / 1 / 3 / 8 kHz, sideband filters USB 2,7 kHz
E: symmetrical 0,3 / 3 / 8 kHz, sideband filters USB 6 / LSB 6 kHz
F: symmetrical 0,3 / 1 / 8 kHz, sideband filters USB 6 / LSB 6 kHz
G: symmetrical 1 / 3 / 13 kHz, sideband filters USB 6 / LSB 6 kHz
H: symmetrical 1 / 3 / 8 kHz, sideband filters USB 3 / LSB 3 kHz

2nd suffix: frequency standard fitted
0: no internal frequency standard, external frequency standard required
S2: type 9400 frequency standard
S3: type 9420 high stability frequency standard

3rd suffix: always 0

4th suffix: ISB filter identification
0: not required / not available
B3: 3 kHz Filter (2,7 kHz minimum bandwidth)
B6: 6 kHz Filter (5,7 kHz minimum bandwidth)

5th suffix: frequency shift keying
0: FSK facility not fitted
F: FSK facility fitted

6 th suffix: automatic frequency control
0: AFC facility not fitted
C: AFC facility fitted

Similar receivers:
RA-1773 (RA1773): RA-1771 fitted with MA-1070A connector panel providing a fan and front connectors of rear sockets, all in Creeth Field Transit Case.
Similar receivers:
RA-1774 (RA1774): RA-1772 fitted with MA-1070A connector panel providing a fan and front connectors of rear sockets, all in Creeth Field Transit Case.

Martin Bösch, 17.Dec.06

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