User manual ICOM IC-F121S
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Manual abstract: user guide ICOM IC-F121S
Detailed instructions for use are in the User's Guide.
[. . . ] INSTRUCTION MANUAL
READ ALL INSTRUCTIONS carefully and completely before using the transceiver.
RWARNING!NEVER touch the transceiver (especially the heat sink) when transmitting continuously for long periods. NEVER connect the transceiver to a power source of more than 16 V DC such as a 24 V battery. If an incorrect connection is made after cutting, the transceiver might be damaged. [. . . ] · Push the key to toggle the mute and unmute conditions (toggles `Audible' and `Inaudible'). · Push the key to mute the channel (sets to `Inaudible' only). · Push the key to unmute the channel (sets to `Audible' only). · Push the key after communication is finished to send a `reset code'.
¡ TALK AROUND KEY Turns the talk around function ON and OFF. TA · The talk around function equalizes the transmit frequency to the receive frequency for mobile-tomobile communication. ¡ WIDE/NARROW KEY Push this key to toggle the bandwidth between W/N wide or narrow. ¡ DTMF AUTODIAL KEY Push this key to transmit a specified DTMF code. DTMF
NOTE: The unmute condition (`Audible' condition) may automatically return to the mute condition (`Inaudible` condition) after a specified period depending on the pre-setting. ¡ OUTPUT POWER SELECTION KEYS Select the transmit output power temporarily, or H/L permanently, depending on the pre-setting. · Ask your Dealer or System Operator for the output power level for each selection.
¡ CALL KEY Transmit a 2-tone, 5-tone code. CALL · Call transmission is necessary before you call CAL A another station depending on your signaling system. CAL B · The [CAL A] and/or [CAL B] keys may be available when your system employs selective `Individual/Group' calls. Ask your Dealer which call is assigned to each key.
¡ SCRAMBLER KEY · Push and hold to turn the voice scrambler funcSCRM tion ON. NOTE: · The optional UT-109 (#02) or UT-110 (#02) VOICE SCRAMBLER UNIT is required.
UT-109: Non-rolling type. 1020 (4 groups × 255) codes are available.
¡ EMERGENCY KEY Push and hold the key to transmit an emergency call. EMER · If you want to cancel the emergency call, push and hold (or push) the key again before transmitting the call. · Depending on the pre-setting, the emergency call is transmitted one time only, or repeatedly, until receiving a control code. ¡ Hook Scan Several functions are available for the hanger HOOK function when taking the microphone from its hanger (hanger-off) and/or returning it to the hanger (hanger-on). ¡ USER SET MODE KEY Changes the contents of the items in the User Set SET mode. · User set mode also available via the `Power ON function'. · Some PC board modifications are required when installing UT-109 and UT-110. (p. 12) · Please contact your Dealer for details.
I Turning power ON
q Push [ ] to turn the power ON. [. . . ] Ask your Dealer about antennas and the best places to mount them.
I Fuse replacement
A fuse is installed in the supplied DC power cable. If a fuse blows or the transceiver stops functioning, track down the source of the problem, if possible, and replace the damaged fuse with a new rated one.
Fuse rating: 20 A, IC-F520/F620: 20 A
If the transceiver becomes dusty or dirty, wipe it clean with a soft, dry cloth. AVOID the use of solvents such as benzene or alcohol, as they may damage the transceiver surfaces. input power : 5 W HM-152/HM-152T/HM-148 · HM-152 : Hand microphone. [. . . ]
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