Yaesu FT-530, Technical Supplement

Page: 21 / 122

Reference Oscillator
D
Tune the transceiver to the center of the
UHF
band (for the version being aligned).
D
Connect the CM coupler and 50-Q dummy
load to the antenna connector, and the fre­
quency counter to sample the
RF
output.
D
Key the transmitter and adjust TC2001 on
the 430 Mother Unit to match the display to
the counter frequency (within 100 Hz).
UHF Power Output
D
Connect the 50-n dummy load and inline
wattmeter to the antenna jack.
D
Tune to the high edge of the
UHF
band (for
the version being aligned), and select high
power output.
D Key the transmitter and adjust VR401 on the
UHF
PA Unit for 5 watts on the meter.
D Select each of the low power settings, key
the transmitter, and confirm the following
wattmeter readings.
Setting RF Output
Low 1
0.3 - 1 .1 W
Low 2
1 .3 - 2.3 W
Low 3
2.6 - 4.5 W
D
Now tune to the low edge of the band and
confirm 4�6 W high power output, and be­
tween 0.3 and 1 W in the Low 1 setting.
UHF Transmitter Deviation
D
Tune to the center of the band, and adjust
the AF generator attenuator to inject 25 m V
at 1 kHz to the
MIC
jack.
D
Key the transmitter and adjust VR1202 on
the Interface Unit for ± 4.8 kHz deviation on
the deviation meter.
UHF
S-Meter Calibration
D
Tune the transceiver and
RF
signal gener­
ator to the center of the UHF band, and
inject 20 dBµ RF modulated with ± 3.5-kHz
deviation of a 1-kHz tone at the antenna
connector.
D
Adjust VR1201 on the Interface Unit so that
all S-meter segments are just on.
FT-530 Technical Suoolement
VR801
VR401
VR
801
V H F Power Output
Transmit in the center of the VHF
band using high power setting.
Adjust for 5W.
VR
401
U H F Power Output
_ Transmit in the center of the UHF
band using high power setting.
Adjust for 5W.
N
0
,_
VR
1 204
V H F S-Meter Cal i bration
While receiving the 2 0 dB
µ
test signal
(3.5kHz dev.
@
lkHz), adjust VR 1204 for
max S-meter indication ( all segments
should display).
VR
1203
VHF Transmitter Deviation
Inject 25m V at lkHz to the MIC jack.
Transmit and adjust for ±4.8kHz deviation.
bl bl
n n
N N
01 ,_
IOZ I B
bl�
TC
2001
Reference Osc i l lator
Adjust the trimmer ca­
pacitor to the alignment
frequency ± lOOHz, as in­
dicated on the frequency
counter.
VR
1 202
U H F Transmitter Deviation
Inject 25m V at lkHz to the MIC jack.
Transmit and adjust for ±4.8kHz deviation.
V R
1 201
U H F S-Meter Cal ibration
While receiving the 2 0 dB
µ
test signal
(3.5kHz dev.
@
lkHz), adjust VR 1201 for
max S-meter indication ( all segments
should display).
VHF Power Output
D
Connect the 50-Q dummy load and inline
wattmeter to the antenna jack.
D Tune to the high edge of the VHF band (for
the version being aligned), and select high
power output.
D
Key the transrnitter and adjust VR801 on the
VHF PA Unit for 5 watts on the meter.
D
Select each of the low power settings, key
the transmitter, and confirm the following
wattmeter readings.
Setting RF Output
Low 1
0.3 - 1 .1 W
Low 2
1 .3 - 2.3 W
Low 3
2.6 - 4.5 W
D
Now tune to the low edge of the band and
confirm 4�6 W high power output, and be­
tween 0.3 and 1 W in the Low 1 setting.
VHF
Transmitter Deviation
0 Tune to the center of the band, and adjust
the
AF
generator attenuator to inject 25 m V
at 1 kHz to the
MIC
jack.
D Key the transmitter and adjust VR1203 on
the Interface Unit for ± 4.8
kHz
deviation on
the deviation meter.
VHF
S-Meter Calibration
D
Tune the transceiver and
RF
signal gener­
ator to the center of the
VHF
band, and
inject 20 dBµ
RF
modulated with ± 3.5-kHz
deviation of a 1-kHz tone at the antenna
connector.
D
Adjust VR1204 on the Interface Unit so that
all S-meter segments are just on.