Furuno MARINE VHF RADIOTELEPHONE FM-3000 - Manual (Page 16)

2.2 Receiving and Transmitting
q Push [POWER] to turn power ON.
w Set the audio and squelch levels.
➥Rotate [SQL] fully counterclockwise in advance.
➥Rotate [VOL] to adjust the audio output level.
➥Rotate [SQL] clockwise until the noise disappears.
e To change the channel group, push [CH/WX] ( )
while pushing [HI/LO]. (p. 6)
r Rotate [CHANNEL] or push [Y Y]/[Z Z] on the microphone to
select the desired channel.
• When receiving a signal, “BUSY” appears and audio is emitted
from the speaker.
• Further adjustment of [VOL] may be necessary.
• Use the optional Voice scrambler function for privacy. (p. 9)
t Push [LO/DX] to turn the receive Attenuator function ON
or OFF, if necessary.
• “LOCAL” appears when the receive Attenuator is in use.
y Push [HI/LO] to select the output power, if necessary.
• “25W” or “1W” appears when high or low power is selected, re-
spectively.
• Choose low power for short range communications, choose high
power for longer distance communications.
• Some channels are for selecting low power only.
u Push and hold [PTT] to transmit, then speak into
∗
(Mi-
crophone).
• “TX” appears.
• Channel 70 cannot be used for transmission other than DSC.
Note: Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83
CANNOT be lawfully used by the general public in U.S.A.
waters.
i Release [PTT] to receive.
Important: To maximize the readability of your transmitted
signal, pause a few sec. after pushing [PTT], hold the micro-
phone 2 to 4 inches (5 to 10 cm) from your mouth and speak
into
∗
(Microphone) at a normal voice level.
VOL SQL
∗
(Microphone)
q
w
e
r r t
y u i U/I/C DW
2.Basic Operation
7
Transmitting without an antenna may damage the
transceiver.
R RCAUTION