DRAKE R8A - Installation; UNPACKING; FIXED INSTALLATION; MOBILE INSTALLATION

5 General Description
R&A Communications Receiver
Pt (BW) (MODE)
AUTO AM SYNC
kHz 60 40 LSB use
aoe
ust Tae
A-B CARR
VFO(A)=(B), (PRE) (ATTN) AGC(B) [F)
| (NOTCH)
N)
A=B | anne 4)(2)VHE)
The R8A communications receiver is a microprocessor
controlled, synthesized, all mode, world band receiver
with continuous coverage capability from 100 through
30,000 kHz. The receiver offers excellent sensitivity, selec-
tivity, high dynamic range and offers features for the most
demanding shortwave reception. Conveniently located
front panel controls allow for rapid operator program-
ming and ease of use. Operating mode and correspond-
ing bandwidth are quickly selected by front panel but-
tons. The selectable AC input allows for operation around
the world. In addition, a DC input is provided for mobile
operation.
AHigh-Q, 8-pole, electronically switched IF filter provides
arange of five commonly used bandwidths. These band-
widths are automatically selected by mode, however
any bandwidth may be selected atthe touch ofa button.
The front panel liquid crystal display provides visual feed-
back to the operator of the current status of the receiver.
The seven digit frequency display allows tuning resolution
to 10 Hz accuracy.
In the AM mode, a selectable synchronous detector
(SYNCHRO) allows for enhanced reception by eliminating
or reducing distortion due to fading signals and allowing
the passband to be shifted toward one sideband, to
reject interference, without causing audio distortion.
A PASSBAND OFFSET control also aids in reducing or
eliminating interfering signals by electronically shifting the
receiver's IF frequencies without disturbing the operating
frequency. This action allows the operator to electroni-
cally move interfering signals out of the receiver's pass-
band thus utilizing the high degree of selectivity provided
by the High-Q, 8-pole IF filter.
Other built-in reception aids include selectable AGC
speed, dual antenna inputs, noise blanker(NB), RF pream-
plifier forenhancing weak signals, RF attenuator for further
improvement of strong signal handling capabilities, ad-
justable RF gain, NOTCH, TONE and SQUELCH controls.
Two independent, real time clocks provide a local and
alternative time selection. Also provided is a two event
timer.
A programmable memory area allows for 440 independ-
ent receive memories. In addition, these memories are
stored in an electronically eraseable memory chip which
does not require a battery backup and is thus impervious
to power line failure. Any of these memories may be
altered by the operator and re-stored. These memory
channels may be accessed manually or by various scan-
ning methods.
Finally, a built-in RS-232 compatible interface allows com-
plete digital control ofthe receiver including memory and
scanning functions.