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Detailed instructions for use are in the User's Guide.
[. . . ] The FC-20 Automatic Antenna Tuner responds to control commands from the FT-897 Transceiver, providing microprocessor-based impedance matching on the 160 through 6 meter Amateur bands. On the HF and 50 MHz bands the impedance matching range is from 16. 5 to 150 (up to 3:1 SWR). [. . . ] On the HF and 50 MHz bands the impedance matching range is from 16. 5 to 150 (up to 3:1 SWR). Accordingly, the FC-20 should not be expected to match "long wire" type antennas unless you have taken specific design steps to ensure that the impedance presented to the FC-20 is within these specifications. Please refer to the FT-897 Operating Manual for operating instructions.
Various setting
By changing the configuration of an internal DIP switch, you may change the RF signal path (to enable the FC30 both on receive and transmit), and you may also clear all the tuner's memories. A) By default, the FC-20 is only engaged in the transmit mode. To activate the tuner circuit while receiving.
1. Remove the 6 screws affixing the case of the FC30, then remove the case. 5 6 7 8 Switch ON ON OFF OFF
Interconnections to FT-897
To 144MHz/430MHz Antenna Control Cable
144MHz/430MHz
To HF/50MHz Antenna
CAT/LINEAR
H Only connect cables to the FC-20 after switching the transceiver off. H If the FC-20 doesn't tune even though you have pushed the TUNER switch of FT-897, it may be because the antenna or its coaxial cable have a serious problem (very high or low impedance due to "open" or "short"). Please check the antenna and coax if this happens. H Do not place any objects next to the ventilator ducts on the FC-20, especially those in the front.
CTRL
ANT
INPU T 22 A
G ND
Specifications
DATA ACC KEY ANT
Supplied Accessories
Coaxial Cable (0. 5 m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Control Cable (0. 5 m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Mounting Screw Assy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 1 Control Cable (0. 5 m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Mounting Screw Assy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]
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