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４．４ Grounding
A GND terminal is on the rear panel of the main unit.
Be sure to ground the main unit using attached earth wire (3m KIV wire 50/0.45 with
copper tube terminal).
４．５ Receiving antenna
Following antennas are suitable to use as the receiving antenna for the FAX-410.
A) Antenna coupler FAX-5 + 2.6 m whip antenna (supplied by us as option)
B) Whip antenna (6 m ~ 8 m)
C) Wire antenna (Reverse-L or T type)
Note: Generally, whip antenna is suitable for reception over 6 MHz, and wire antenna is
suitable for reception under 6 MHz.
Receiving sensitivity would become worse when using one antenna for other receivers
and/or transmitters through multi-coupler. In that case, please use other antenna or
install exclusive antenna.
Be sure to connect BK especially for following case in order to avoid from burning trouble
of antenna coil/receiver circuit.
A) In case of using same antenna which is used for a transmitter
B) When a transmitting antenna is located near to receiving antenna of FAX-410
Use high frequency coaxial cable as an antenna cable.
When using optional antenna coupler FAX-5, turn ON the switch S1 on BK board inside
the main unit.