13
Alignment
FM TX IF Adjustment
r
Tune the frequency to the 28 MHz band. Connect the
RF millivoltmeter to
TP1033
and leave
J1002
termi-
nated into a 50-Ohm dummy load.
r
Key the transmitter in the FM mode, and adjust
T1014
,
T1023
, and
T1021
alternately for maximum indica-
tion on the RF millivoltmeter.
r
Connect the frequency counter to
TP1033
.
r
Key the transmitter in the FM mode without micro-
phone input. Adjust
L1049
for a reading of 68.3300
MHz (±100 Hz).
Carrier Balance Adjustment
r
Tune the frequency to the 14 MHz band. Terminate
J1002
into a 50-Ohm dummy load and connect a spec-
trum analyzer or a RF millivoltmeter at this point.
r
Key the transmitter in the USB mode without micro-
phone input. Adjust
VR1005
for maxi-mum carrier
suppression on the spectrum analyzer or for minimum
indication on the RF millivoltmeter.
VHF TX BPF Adjustment
r
Set the frequency to 145.995 MHz. Connect the spec-
trum analyzer to
J1002
, which should be terminated
into a 50-Ohm dummy load.
r
Inject a 1 kHz tone at 1 mV level to the
MIC
jack.
r
Key the transceiver in the USB mode, and adjust
T1013
,
T1012
, and
T1011
alternately for maximum
indication on spectrum analyzer.
UHF TX BPF Adjustment
r
Set the frequency to 430.000 MHz. Connect the spec-
trum analyzer to
J1002
, which should be terminated
into a 50-Ohm dummy load.
r
Inject a 1 kHz tone at 1 mV level to the
MIC
jack.
r
Key the transceiver in the USB mode, and adjust
TC1004
,
TC1003
and
TC1002
alternately for maxi-
mum indication on the spectrum analyzer.
T1019
T1018
T1004
T1005
T1008
TP1043
TP1044
T1027
T1028
TC1003
TC1002
TC1001
T1036
T1037
T1030
T1026
T1024
T1035
T1034
T1029
T1010
T1009
T1006
TC1005
T1031
Summary of Contents for FT-897
Page 5: ...Block Diagram 5...
Page 6: ...Block Diagram 6 Note...
Page 21: ...21 MAIN Unit Circuit Diagram...
Page 22: ...22 MAIN Unit Note...
Page 52: ...52 MAIN Unit Note...
Page 59: ...59 PA Unit Circuit Diagram...
Page 60: ...60 PA Unit Note...
Page 73: ...73 PANEL Unit Circuit Diagram...
Page 74: ...74 PANEL Unit Note...
Page 75: ...75 PANEL Unit H Parts Layout Side A 1 2 3 F A C B E D BRPG1211C D4007 4010 4012 G...
