MT-4E VHF & UHF Receiver & Transmitter Instruction Manual
IM08-MT-4E-TXRX-P1162
VHF & UHF Hardware Tuning and Troubleshooting
12
RECoMMEndEd tESt EquIPMEnt
Alignment of the receiver and transmitter requires the following test equipment or its equivalent.
Power supply – Reg9.5 VDC at 2 A
Phillips PM 2811
Power Supply – Reg13.8 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.
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.