User Manual

MT-4E VHF & UHF Receiver & Transmitter Instruction Manual
IM08-MT-4E-TXRX Project 1106
Hardware Tuning and Troubleshooting
12
RECOMMENDED TEST EQUIPMENT
Alignment of the Receiver and/or Transmitter requires the following test equipment or its equivalent.
Power supply - Regulated +9.5 VDC at 2 A Phillips PM 2811
Power Supply - Regulated +13.8 VDC at 2 A Topward TPS-4000
Oscilloscope / Multimeter Fluke 97 Scopemeter
Current Meter: Fluke 75 multimeter
Communications Service Monitor (Analog) Marconi Instruments 2965A or equivalent
Communications Service Monitor (P25 Digital and Analog) IFR 2975
Alignment Tools Daniels A-TK-04
It is recommended that the radio communications test set be frequency locked to an external
reference (WWVH, GPS, Loran C) so that the high stability local oscillator may be accurately set to
within its ± 1 ppm frequency tolerance.
Complete Receiver and Transmitter Alignment
A complete Receiver and Transmitter Alignment is performed at the factory and should not be
required under normal circumstances. A large change in Receiver or Transmitter operating frequency,
as discussed in the next section, or a replacement of major Receiver or Transmitter sub-assembly
modules, may require a complete realignment operation.