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5.8 Antenna coupler, AT-1560
5-52
5.8.1 Antenna tuning
Start
Check input frequency.
TUNE ERROR
1.6 to 32 MHz?
Operating frequency is
used first time?
SWR< 1.5?
TUNE OK
Phase detection
Antenna is inductive (L) or
Frequency > 7.68 MHz
Antenna is capacitive (C) and
Frequency < 7.68 MHz
Pi matching
Try to tune only by
using coils.
First time?
YES
NO
YES
NO
YES
NO
(a) (b)
TUNE OK: “TUNE OK” signal is sent to the transceiver unit and relay on/off condition is
memorized onto EEPROM.
TUNE ERROR: “TUNE ERROR” signal is sent to the transceiver unit while the matching
circuit is bypassed.
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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