Specifications

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7. ALIGNMENT PROCEDURE
The UHF/VHF Transceivers have broadband tuning range, UHF (450-490 MHz) and VHF (148-
174 MHz) should require no special alignment, unless repairs are performed on the transceiver
portion. Should repairs be necessary, use the "Test Equipment Diagram" and the “Alignment
Points Diagram", in conjunction with the following procedures:
 Extender Board (ACC-516) is required in order to separate the Digital and RF PCB’s to
allow access to the alignment points. Installation instructions are provided with the
Extender Board Assembly.
RV4 RV3
RV5
RV6
TCXO1
C208 C308
RV1
RV2
TP1
RF BOARD
RV402
RV401
SW401
DIGITAL BOARD
CON407
RV403
SQ for N-BAND
SQ for S-BAND
Balence
Deviation
Tone Deviation
Outpt Audio level
Ref. level for
Modem
High
Power
Low
Power
frequency
Rx
VCO
Tx
VCO
Figure 7.1. Alignment Points Diagram