5.1 Configuration
5-8
5.1.5 Antenna coupler unit
There are two antenna coupler units: AT-1560-15 is for 150W SSB and AT-1560-25 is
for 250W SSB. Both units include the same matching circuit, but AT-1560-25 is
designed for higher voltage ratings. When the system is switched off, the antenna is
grounded via the dummy board. The resin case and the stainless steel case are available.
Fig.5.1.6 Block diagram of AT-1560
Table 5.1.4 Boards in AT-1560
Board Unit Type Function Remarks
AT-1560-15 05P0528
Antenna matching, capability of 7 m
antenna connection
FS-1570
COUP
AT-1560-25 05P0528A
Same as AT-1560-15, but for high
voltage
FS-2570
AT-1560-15 05P0543
10Ω+250pF, 100W dummy load
FS-1570
DUMMY
AT-1560-25 05P0610
10Ω+250pF, 200W dummy load
FS-2570
Table 5.1.5 Type of antenna coupler
Type Code number Remarks
AT-1560-15-AAS 000-055-245 For FS-1570, resin case
AT-1560-15-SUS 000-055-263 For FS-1570, stainless steel case
AT-1560-25-AAS 000-055-255 For FS-2570, resin case
AT-1560-25-SUS 000-055-265 For FS-2570, stainless steel case
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