Garmin VHF 720 User Manual

Page 29

GETTING

STARTED

FIGURE 11

Transmit Display

Press and

Hold While

Transmitting

3. Wait until the channel you have selected is free of

communications. THIS IS AN FCC REQUIRE-

MENT!

NOTE: For communications over short distances,

press the H/L key until LOW is displayed on the

LCD. This reduces transmission power to one

watt, prolonging battery life.

4. Press and hold the PTT (Press To Talk) key and

begin your transmission. The TX symbol will

appear on the LCD display. (Figure 11)

5. Speak directly into the microphone on the front of

the unit (see page 2) and hold the unit vertically 1

to 2 inches from your mouth.

NOTE: VHF Marine Radios communicate over

distance by Line-of-Sight, which means that the

signal may be blocked by objects such as land

forms, large vessels, etc. It is therefore important

to transmit with the antenna in a vertical position

and with the radio positioned as far above the

water as is feasible.

6. Release the PTT key when you have completed

your transmission.

NOTE: You must use a specific communication

style when using a marine radio, such as your

station call sign or boat name and ending your

transmission with proper terminology such as

Over. Refer to the Maritime Radio Users

Handbook. Also be aware that the unit will

automatically cancel TX after the PTT key has

been pressed for more than thirty seconds to limit

extensive transmissions and protect the unit

from damage.

Receiving

and

Transmitting