143 BIIS OPERATION Default settingThe following functions are assigned to each programmablekey as the default. However, the assigned function can bechanged by your dealer. Ask your dealer for details.During digital mode operation, BIIS is not available.NOTE: [TX Code Enter] must be assigned to a key.[P0]; Call : Push to transmit a 5-tone/BIIS callwhen the selected channel is a 5-tone or MSK channel.[P1]; Digital : Push to select the call list ID/transmitmessage, or to display the receivemessage record for selection.[P3]; TX Code Enter : Push to enter the ID code edit modedirectly for both 5-tone and MSK.[P4]; Moni(Audi) : Push this key after the communica-tion to send a ‘Clear down’ signalduring MSK channel operation.[P2]; Null : No function is assigned.[Up]/[Down]/[DIAL]; CH Up/Down: While in the standby condition,selects the operating channel.After pushing [Digital] or [TX CodeCH Select], selects call list or TXcode channel, respectively. Receiving a callDD Individual callq When an individual call is received;• Beeps sound.• “ ” appears and the mute is released.• The programmed text message (e.g.“CALLING”) and the callingstation ID (or text) is displayed when the indication mode is 2lines.• The programmed text message (e.g.“CALLING”) and the callingstation ID (or text) is displayed alternately when the indicationmode is 1 line, depending on the setting.• “ ” appears or blinks depending on the setting.w Push and hold [PTT], then speak into the microphone at anormal voice level.• TX indicator lights red.e Release [PTT] to return to receive.• BUSY indicator lights green while receiving a signal.r To finish the conversation, push [P4] (Moni(Audi)) to sendthe ‘Clear down’ signal.• Either station can send a ‘Clear down’ signal.• “CLR DOWN” is displayed for 2 sec. (approx.).• “ ” disappears and the transceiver returns to the standby con-dition.Appears or blinksAppearsC A L L I N G0 5 0 0P0 P4P3P2P1In this instructionmanual, these keysare from the left,called [P0]/[P1]/[P2]/[P3]/[P4].

explicit definitions

panel description

I Function display

I Programmable function keys

I Channel selection

I Call procedure

D Transmitting notes

D TX code number edit

D Individual ID code selection

I Scrambler function

I Receiving a call

D Group call

I Transmitting a call

D Direct code entry

D Receiving a status message

D Received message selection

I Transmitting a status

D General

D Programming an SDM memory

I Position data transmission

I Stun function

connection and maintenance

I Supplied Accessories

I Mounting the transceiver

I Optional UT-109 or UT-110 installation

I Antenna

SAFETY TRAINING INFORMATION

Icom IC-F1721 Instruction Manual

IC-F1721

i programmable function keys

mdc 1200 operation

i receiving a call

IC-F1721D

IC-F1821

IC-F1821D

IC-F2721

IC-F2721D

IC-F2821

IC-F2821D