Equipment information:

Racal 1774 Receiver
Manufacturer:
Racal
Model: 1774
Date: 1976
Category: Radio, Communication
Group: Receiver
Description: HF Communications Receiver
Information:
                                    1 . The RA. 1771 and RA. 1772 are fully synthesized solid
state communications receivers providing reception
facilities for LSB/USB (A3A, A3H, A3J), AM(A3) and CW(A1).
ISB (A3B), FSK(F1) and AFC facilities are provided by
optional, internally fitted, modules. In addition, a manual
RF tuning unit may be fitted.
2. The built-in synthesizer is phase-locked to the output of
a frequency standard, which may be either internal or
external, and covers the frequency range 15kHz to 30MHz
in switched 1MHz bands. In the RA.1771, the kHz setting is
selected by rotary decade switches, with digital indication
in 10Hz increments, while in the RA.1772 the synthesizer is
continuously tunable over each 1MHz band and on electronic
readout indicates the kHz setting to 10Hz. Except for the
method of frequency selection both receivers are designed to
the same specification.

These manuals are available for the above equipment:

Racal -- 1774 -- Service Manual
File name: Racal-7292-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 84
Size: 3.47 Mbytes (3639670 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date: May 1976
Quality: Scanned document, all readable.
Upload date:
MD5: c294a0bfd8a3a67622b1d6d126b07c4a
ed2kID: 427c8276bc2957ad0f6684e07afb8c95
Downloads: 52 since 25 October 2015
Information:
CHAPTER 1
CHAPTER 2
CHAPTER 3
Para.
TECHNICAL SPECIFICATION GENERAL DESCRIPTION
INTRODUCTION 1
BRIEF TECHNICAL DESCRIPTION 3
MECHANICAL DESCRIPTION 8 IDENTIFICATION OF VARIANTS
INSTALLATION
INTRODUCTION 1
REAR PANEL CONNECTIONS 2
Antenna Connection 3
Power Input Socket 4
Coaxial Sockets 5
Terminal Strip Connections 6
Earth Terminal 7 PREPARATION FOR USE
General inspection 8
Fuselinks 9
Voltage selector 10
Rear Panel Switches 11
Power Supply Connection 12
Phones 13
INITIAL SWITCH-ON 14
RA.1772 Tuning Check 15
Operational Check 16
TELEPRINTER DRIVE (FSK Versions) 17
FSK RELAY 20
EARTH CONNECTION 21
TELEGRAPH SUPPLY SELECTION 22
TRANSIT SCREWS 24
OPERATING INSTRUCTIONS
INTRODUCTION 1
FUNCTION OF CONTROLS 3
RECEIVER TUNING 4
LINE LEVEL ADJUSTMENT 6
CHAPTER 4
PRINCIPLES OF OPERATION INTRODUCTION RF BOARD
LOCAL OSCILLATOR FIRST MIXER BOARD 34MHz GENERATOR BOARD
SECOND MIXER BOARD MAIN IF/AF BOARD ISB IF/AF BOARD
AUTOMATIC FREQUENCY CONTROL FSK BOARD
Racal-7292-Manual-Page-1-Picture
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