Garmin VHF 720 User Manual download pdf (Page 40)

Glossary

APPENDIX F

Glossary of Radio Terminology and Abbreviations

Canadian Channels: Channel designations as defined by the

International Telecommunications Service,

(ITS).

Duplex: Transmit and receive on different frequencies.

FM: Frequency Modulation

International Channels: Channel designations as defined for use

in international waters by the ITS.

PTT: Press-To-Talk switch

RF: Radio Frequency

RX: Receive

Simplex: Transmit and receive on the same frequency.

Squelch: To suppress background noise.

Tri-Watch: Monitors Channels 16 and 9 while working on yet

another user designated channel.

TX: Transmit

U.S.A. Channels: Channel designations as defined by the FCC.

VHF: Very High Frequency (30 MHz to 300 MHz)

Weather Channels: Channel designations as defined by the FCC.

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Garmin VHF 720 User Manual Page 40