Realistic TRC-457 Owner's Manual

NOTE
Kepair o r
adjustment
o f t r a n c n ~ i t t r r ci1.1 u i t ~ must 1 , e under
supervision 01' a person wit11 first-or second-cla\s ratliotele-
phone licetlse.
(Kel'er to T<:<; Rules ntltl Regul;~tioll\ I'art 95, Subpart
c
& D.)
The frequency or the transmitter should he checked periodically
with
a
seconda~y rrequency s t i ~ ~ l d a i ~ l
111
II:\LII-c
ploper and legal
oper-at ion.
Best
I-esults hill be obtained when adjusting llle !inal
R F
outpu~
circuit if the antenna normally
L I S C ~
15
connecte~l and thc chassia
i s
as
nearly in the c;lblnet
:I?
posslhle.
Collnect rithel-
iO-ol~rn clumm>
Io,>d
or
the normally
L I S C ~
antenna
system.
MODEL
TRC-457
GENERAL:
Channels
: 40 Channels for AM, Upper Side Band and Lower Side Band,
utilizing Digital Circuitry
Frequency Range
: 26.965 MHz t o 27.405 MHz
Frequency Control
: Digital (Phase Lock Loop) Synthesizer
Frequency Accuracy
:
* I 0 0 Hz
Operating Temperature Range
: -20°C t o +50"C
Power Requirements
: 13.8V DC (12-16 volts DC, negative or positive ground) or
120V AC (60 Hz)
Antenna
Microphone
Speaker
Clock
Size
Weight
Accessories
:
52 ohm (Coaxial connector)
: 600 ohm Dynamic Type
:
8 ohm, 2.5 Watt
: Digital Type (solid state)
: 4 " x 1 5 " x 11-112'' (HWD) ( l o x 3 8 x 29.2cm [ H W D I )
:
16 Ibs. (approx.) (7.3 kg)
: AC Cord. DC Cord with in-line Fuse, Microphone and Micro-
phone Hanger and Mounting Brackets
M E A S U R E M E N T CONDITION:
Power Source
: 13.8V DC, 120V AC ( 6 0 Hz)
Antenna Impedance
:
50 ohms
Test Temperature : 25°C
A M Modulation Frequency
:
1 kHz
SSB Modulation Frequency, Transmit
: Two tone: 500 Hz and 2400 Hz
Single tone: 1 kHz
Mean Signal Input Level
: 1OOOpV
Reference Audio Output Power : 0.5W
Reference A M Modulation Percentage :
1 kHz 30%
Audio Frequency, SSB Receive
: 1 kHz
Audio Output Load
: 8 ohms resistive
Measuring Channel
:
19
Courtesy of the Manufacturer
HOWARD W. S A M S & CO., 1 NC.
Indianapolis, Indiana 46206
@ 1978
Howard
W.
Sams
&
Co.,
Inc.
Printed in U. S. of America
8CF829