7
Handset Unit
Transmitter Section
Connection
Preset
Place the Handset in VCO/TX FREQ. ADJ mode in accordance with the procedure on page 4.
Alignment Procedure
step
Adjustment
Remarks
1
RT501
(TX Power)
Connect the RF Power Meter to the RF test point on the Handset MAI
PCB. Adjust RT501 for a -7.5dBm reading on the Power Meter.
2
CT401
(TX Frequency)
Connect the Frequency Counter to the RF test point on the handset MAIN
PCB. Adjust CT401 to make sure that the frequency is 903.052467 MHz.
3
RT403
(TX Modulation)
Press the “2” key to enter the TEST Mode 2. Connect the AF Generator
to the MIC Connector make sure that the output is 1kHz 9mV from the AF
Generator.
Connect the Deviation Meter to the RF test point on the handset MAIN
PCB. Adjust RT403 to indicate ±8 kHz Dev.
Alignment Point Location on Handset Main PCB and Handset RF PCB
RF
Test Point
HANDSET Unit
Deviation
Meter
Frequency
Counter
Power
Meter
AF GEN.
J401
Batter
Terminals
MIC+Pin
RF
Test Point
1kHz 9mV
DC 3.8V
DC Power Supply
RF TEST POINT
Handset PCB
Summary of Contents for FT-8509
Page 2: ... 121 5 30 36 6 59 0 18 25 66 7 3 21 70 83 38 6 1 3 1 XJ1 4 ...
Page 11: ...9 BLOCK DIAGRAMS Base Unit ...
Page 12: ...10 Handset Unit ...
Page 13: ...6 0 7 5 06 DVH 8QLW 0DLQ 45 44 ...
Page 15: ... DQGVHW 0DLQ 48 47 ...
Page 30: ...30 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 31: ...31 Base Unit Key PCB ...
Page 32: ...32 Handset Main PCB ...
Page 33: ...33 WIRING DIAGRAMS Base Unit ...
Page 34: ...34 Handset ...
Page 37: ...37 7 8 4 1 16 17 17 5 10 15 11 12 2 9 6 13 14 3 17 Handset RF MODULE HANDSET MAIN PCB ASSY ...
Page 53: ......