Maintenance
GPH-CMD VHF Radio
Page 5-6
BK RADIO
5.5 ALIGNMENT PROCEDURES
The GPH-CMD radio uses manual alignment for receiver front end tuning, receiver IF alignment
and VCO adjustment. Electronic tuning is provided for all other adjustments. You will need the
GPH-CMD Editor Software and programming cable, available from BK Radio. Refer to the GPH-
CMD Editor Help file for more complete details on using the program.
5.5.1 TEST SETUP
Mount the radio in a suitable fixture containing an adapter for supplying 10 VDC from a negative
ground power supply. Turn off any radio features assigned to the keypad function menu and set
the manual controls as follows:
Channel Selector:
Channel 1
Channel Group:
Group 1
On/Off Volume:
On, volume minimum
Monitor / Squelch
Unsquelched, fully clockwise
Radio Top Switches
Off (Toward front of radio)
Refer to Figures 5-1 and 5-3 for Transmitter and Receiver Test Setup. These figures show the
interface between test equipment and the radio. See Figures 5-2 and 5-4 for location of the
various adjustment components.
5.5.2 ALIGNMENT ORDER
When more than one adjustment is necessary, follow the order listed:
A. VCO
Adjustment
B. Transmit
Power
C.
Reference Oscillator Frequency
D.
VCO Modulation Sensitivity
E.
Receiver IF Alignment
F.
Receiver Front End Tuning
G.
Receiver Front End Slope
H. Squelch
Содержание GPH-CMD
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