The Racal 1772 is a high-grade ,general purpose, solid state communications receiver.
Frequency coverage is from 15khz-30MHz by switchable 1MHz steps and a continuously
tunable synthesiser in 10Hz or 100Hz steps over each 1MHz band,with an overspill of 20kHz
at the end of each 1MHz band.Tuning accuracy is +or 5Hz relative to the wanted
signal.Antenna input is 50-75 ohms nominal.Sensitivity on CW and SSB is 1microV for the
range 500kH to 30MHz.IF filters with the following passbands are fitted; 0.3,1.2,3.0 and
13 kHz.The BFO range is +or 3kHz,variable by slow motion control.A range of audio
outputs is provided,from 1mW into 600 ohms, to 1W into 8 ohms.The communications receiver
is fitted with the optional FSK Demodulation board allowing reception of shifts in the
range 85Hz to 850Hz ,at a maximum speed of 200 bauds.Telegraph output at 6-0-6 or 80-0-80
volts at 100mA for polar
use,or by rear panel switch,for single current operation.Mark/space reversal
and a "tune" switch are provided, for tuning of the receiver without operating
the teleprinting equipment ,in situations where this is in use in order to provide hard
copy.A front panel meter is fitted to indicate RF level,AF level,FSK tune,and suitable
performance or supply level tests.The following front panel controls are fitted;MHz
Control,kHz Frequency selection by rotary VFO type control,Tuning rate switch,RF
Tune,AGC,,Mode Switch,Meter Switch,Meter,Loudspeaker & Switch,Headphone Jacks,IF
Gain,AF Gain,BFO,Line level presets,Filter Switch and On/Off Switch.Comprehensive rear
panel connections are available as follows; Antenna,Antenna Fuse,Mains In & Fuse,Mains
Voltage adjust,Standby 12 volt fuse,Teleprinter fuse,Te;leprinter supply voltage
selector,Teleprinter Polar/Neutral Switch,34MHz In/out,34 MHz internal/External,IMHz In
/Out,frequency Standard Int/Ext Switch,Local Osc In/out,local Osc Int/Ext.Switch,AGC ( for
diversity),Loudspeaker Out,Mute Line,FSK,Standby +12 volts In and out,and 1.4 MHz IF out.
Mains power requirements are 100-125 volts or 200-250 volts ,45-65 Hz.Dimensions of the
Racal RA1772 communications receiver,which is designed for rack mounting,are 7" high
by 19" wide by 16.25" deep.The receiver is in near new condition and is in
working order.The price for the Racal RA1772 receiver is $1480 US Dollars,which includes
the cost of air freight to the USA.If rack mounting is thought to be "unworthy"
for such a "tasty" piece of equipment,we can supply a suitable steel Table Top
Cabinet,finished in black ,for this receiver ,for an additional $78 US Dollars,which also
includes the additional cost of air freight to the USA in respect of the cabinet.This fine
receiver is highly recommended to the serious collector/user of high-grade communications
receivers.