Racal - 1773 - Receiver
Manufacturer:
Image 1 of 4
If you have any other photos or manuals for the
Racal 1773
you can
upload the files here.
Equipment:
1773
Date:
1976
Category:
Group:
Sub Group:
Information
1 . The RA 1771 and RA 1772 are fully synthesized solid
state communications Receiver 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 Receiver are designed to
the same specification.
1 Manual
Service manual
Manual type:
Service manual
Pages:
84
Size:
3.5 MB
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
Oct. 25, 2015
MD5:
c294a0bf-d8a3-a676-22b1-d6d126b07c4a
Downloads:
2415
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 Phone 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