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5.8 Antenna coupler, AT-1560
5-53
TUNE OK
Using L7, L8 or
L9?
YES
NO
OK?
Insert parallel capacitor
and retune.
(50 pF, 100 pF, 150 pF)
Insert shortening
capacitor.
Calculate antenna capacitance.
CA > 40 pF
Calculate antenna voltage.
If high, insert parallel capacitor.
Antenna
voltage<6 kV
Frequency
> 3.36 MHz?
TUNE ERROR
SWR< 2.0?
(MF band: SWR< 3.0)
(a)
(b)
OK?
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
NO
TUNE OK
NO
YES
(c)
Gamma matching
Retry gamma matching.
(To find out minimum SWR point,
make a large change.)
SWR < 2.0?
(MF band: SWR< 3.0)
Summary of Contents for FS-1570
Page 1: ...SSB Radio telephone FS 1570 2570...
Page 204: ...7 1 Output power 7 2 Power data vs T R output Input vs output...
Page 224: ...AP2 1 DSC Test call AP2 2...
Page 230: ...AP3 2...
Page 231: ...AP3 3...
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