3
The MX170(C) is comprised of eight replaceable subassemblies. Five of the
subassemblies are contained in shielded modules in order to reduce radio frequency
interference. The five are the NA V receiver, the NA V synthesizer, the COMM
receiver, the COMM synthesizer, and the Transmitter.
The remaining three subassemblies are the Rear Panel Assembly, the Front Panel
Assembly and the Computer Board. The Rear Panel Assembly contains the Audio
Amplifier, Power Filter, and the
T/R
switching. The Front Panel Assembly contains the
digital displays, the function select switches and the volume controls. The Computer
Board contains the microprocessor, the memory, and program storage.
Also contained on the computer board are the audio processing circuits and
the channeling circuits.
The subassemblies are interconnected with plugs so that any module may be
replaced without the use of a soldering iron. For equipment repair it is recommended
that complete subassemblies be replaced.
As an aid to locating the defective subassembly a set of analog test points are provided.
The analog test points include the receiver tuning voltages, synthesizer control voltages,
and the AGC lines.
C. Specifications
MXI70(C) TRANSCEIVER
Mounting:
Panel mounted, no shock mounting required.
Size:
6.312 x 2.600 x 14.15 inches
w/
connectors
(16.03 x 6.60 x 35.94 cm)
Weight:
4.9 lbs. excluding external connector and harness.
Power Requirements:
13.75 Vdc (or v
w/CONV)
NAV and COMM Recv'r
1.7A
Max COMM Total
wi
Transmit (Tone)
7.1A (6.2A unmodulated)
COMM Transceiver
Crystal Controlled:
760 channel
Frequency Range:
118.00 to 136.975 MHz
Frequency Stability:
+
.003%. -20 to 50C
Содержание MX170C
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