Midland 70-1341, Руководство по обслуживанию

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PREPARATION
70-1341/1344/1441/1444
2 - 3
COMPLETE REALIGNMENT
Complete realignment is only needed when a component that affects alignment has been replaced. RADIO
REPROGRAMMING WITH TEST FREQUENCIES IS REQUIRED.
TEST EQUIPMENT REQUIRED
TEST INSTRUMENT INSTRUMENT CAPABILITIES USE
Regulated DC Power
Supply 13.8 V DC, 15 A Radio power source
RF Wattmeter
100 W, 136—174 MHz
50 ohm circuit Transmitter power measurements
RF Load Resistor 50 ohm, 100 W Antenna dummy load
Frequency
Modulation Meter 136 - 174 MHz, peak-responding,
±5 kHz range Modulation level measurements
Frequency Meter or
Frequency Counter 136 - 174 MHz, 1.0 ppm accuracy Carrier frequency measurement
RF Signal Generator 136 - 174 MHz range,
0.1 - 1 k

V output, 3 kHz
FM mod. with 1 kHz tone
All receiver measurements
Distortion Analyzer 1 kHz notch,
1% measuring range Receiver performance test and IF
alignment
Load Resistor
(audio) 3.2 ohms, 20 W Speaker load for all receiver
measurements
AC Voltmeter 10mV to 10 Vrms Audio level adjustments
Oscilloscope DC to 500 kHz bandwidth
Digital Multimeter 0.1 to 20 V DC Test point measurements and power
supply setup
Programmer MIDLAND 70-1473
Programming Kit
Manual radio control and
Programming