2. SSB RADIOTELEPHONE

2.5When Automatic Tuning Fails

The antenna coupler automatically tunes a wire or whip antenna transceiver. When all frequencies cannot be tuned, TUNE: OK will not appear on the display. In this case, you can tune 2182 kHz by manually operating the coupler as shown below.

DANGER

HIGH TENSION HAZARD

DO NOT TRANSMIT WHEN

THE ANTENNA COUPLER

IS OPEN.

1.Turn off the control unit. Remove the cover of the antenna coupler.

2.Set the MANUAL-AUTO switch to the MANUAL position.

COUPLER BOARD

3.Replace the cover.

4.Turn on the control unit.

5.Communicate using 2182 kHz.

MANUAL

AUTO

2-7

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Furuno FS-5070 manual When Automatic Tuning Fails, High Tension Hazard