Icom IC-F521 Instruction Manual
Vhf/uhf transceiver
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Also See for IC-F521:
- Instruction manual (24 pages) ,
- Service manual (38 pages) ,
- Instruction manual (36 pages)
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Table of Contents
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Summary of Contents for Icom IC-F521
- Page 1 INSTRUCTION MANUAL VHF TRANSCEIVER iF521 UHF TRANSCEIVER iF621...
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Page 2: Explicit Definitions
–22°F (–30°C) or above +140°F (+60°C), or Icom Incorporated (Japan) n the Unted States, the Unted Kng- n areas subject to drect sunlght, such as the dashboard. dom, Germany, France, Span, Russa and/or other countres. -
Page 3: Table Of Contents
For U.S.A. only ■ Fuse replacement ............16 CAUTION: Changes or modficatons to ths transcever, not ■ Cleanng ..............16 expressly approved by Icom Inc., could vod your authorty to 4 OPTIONS ...............17 operate ths transcever under FCC regulatons. 5 SAFETY TRAINING INFORMATION ......18... -
Page 4: Panel Description
PANEL DESCRIPTION ■ Front panel q AF VOLUME CONTROL KNOB e FUNCTION DISPLAY ➥ Rotate the knob to adjust the audo output level. ➥ Dsplays varety of nformaton, such as an operatng • Mnmum audo level s pre-programmed. channel number/name, 2/5tone code, DTMF numbers and audble condton, etc. -
Page 5: Function Display
PANEL DESCRIPTION ■ Function display t DEALER-PROGRAMMABLE KEYS [P0] to [P4] q w e ➥ Desred functons can be programmed ndependently by your Dealer. y POWER SWITCH [POWER] ➥ Push and hold to turns the power ON and OFF. • The followng functons are avalable at power ON as optons: q TRANSMIT INDICATOR - Automatc scan start ➥... -
Page 6: Programmable Function Keys
] programmable functon i 2/5TONE INDICATOR keys. ➥ Appears when specfied 2/5tone call s receved. Consult your Icom Dealer or System operator for detals con- cernng your transcevers programmng. o ALPHANUMERIC DISPLAY In the followng explanatons, programmable functon names ➥ Dsplays the CH number, 2/5tone ndcaton, DTMF are bracketed, the specfic swtch used to actvate the func- numbers, Audble ndcaton, etc. - Page 7 PANEL DESCRIPTION [BANK] BANK KEY [MONI] MONITOR KEY Select and determne a bank number. Actvates one of (or two of) the followng func- • Push [BANK] then push [CH UP]/[CH DN] to tons on each channel ndependently: select operatng bank number, and then push •...
- Page 8 PANEL DESCRIPTION [ T A ] TALK AROUND KEY [CODE] TX CODE CHANNEL UP/DOWN KEY Turns the talk around functon ON and OFF. Push to selects a TX code channel drectory. • The talk around functon equalses the transmt [DTMF] DTMF CHANNEL SELECT KEY frequency to the receve frequency for moble- to-moble communcaton.
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Page 9: Panel Description
PANEL DESCRIPTION [ID MR] ID MEMORY READ KEY [SCRM] SCRAMBLER KEY Recalls detected ID codes. • Push and hold to turn the voce scrambler • Push ths key, then push [ ] for selec- functon ON. ton. • Push to turn the voce scrambler functon OFF. •... -
Page 10: Operation
OPERATION ■ Turning power ON ■ Channel selection q Push [POWER] to turn the power ON. Several types channel selectons are avalable, methods • A power-up alert tone sounds for about 1 sec. and an openng may dffer accordng to your system set up. message may appear. -
Page 11: Receiving And Transmitting
OPERATION ■ Receiving and transmitting D Transmitting notes RECEIVING: • Transmit inhibit function q Push [POWER] to turn the power ON. The transcever has several nhbt functons whch restrct w Push [CH UP] or [CH DN] to select a channel. e When recevng a call, adjust the audo output level to a transmsson under the followng condtons: comfortable lstenng level. -
Page 12: D Dtmf Transmission
OPERATION D DTMF transmission D Scrambler function If the transcever has a [ ] key, the automatc DTMF UT-109 (#02) or UT-110 (#02) optonal voce scrambler unt DTMF transmsson functon s avalable. Up to 7 DTMF channels provdes hgh performance prvate communcaton between are avalable. -
Page 13: User Set Mode
OPERATION D User set mode User set mode s accessed at power ON and allows you to set seldom-changed settngs. In ths case you can “custom- ze” transcever operaton to sut your preferences and oper- atng style. Entering the user set mode: q Whle pushng and holdng [ ] and [ ], push [POWER]... -
Page 14: Connection And Maintenance
CONNECTION AND MAINTENANCE ■ Rear panel and connection Optional speaker (SP-22) Antenna NEVER connect to Red: a 24 V battery. Optional cable (OPC-617) Black: Supplied DC Battery power cable Crimp Note: Use the terminals Solder for the cable connections. -
Page 15: SupplEd AccessorEs
CONNECTION AND MAINTENANCE ■ Supplied Accessories q ANTENNA CONNECTOR Microphone hanger Microphone Microphone* Connects to an antenna. Ask your Dealer about antenna and screw set hanger cable* selecton and placement. w MICROPHONE HANGER Connect the suppled mcrophone hanger to the vehcle’s ground for mcrophone on/off hook functons. -
Page 16: Mounting The Transceiver
CONNECTION AND MAINTENANCE ■ Mounting the transceiver r Invert the transcever 180 degrees clockwse as below. The front panel can be nverted for correct vewng whle t Re-attach the Front panel to the transcever. leavng the bult-n speaker facng away from the mountng surface. -
Page 17: D Mounting The Transceiver
CONNECTION AND MAINTENANCE D Mounting the transceiver The unversal mountng bracket suppled wth your trans- cever allows overhead mountng. • Mount the transcever securely wth the 4 suppled screws to a thck surface whch can support more than 1.5 kg. Flat washer Spring washer When using... -
Page 18: OptOnal Ut-108 NstallatOn
CONNECTION AND MAINTENANCE ■ Optional UT-108 installation ■ Optional UT-109/UT-110 installation Install the optonal UT-108 unt as follows: q Turn power OFF, then dsconnect the DC power cable. q Turn power OFF, then dsconnect the DC power cable. w Unscrew the 4 screws, then remove the bottom cover. w Unscrew the 4 screws, then remove the bottom cover. -
Page 19: OptOnal Opc-617 NstallatOn
CONNECTION AND MAINTENANCE ■ Optional OPC-617 installation ■ Antenna Install the OPC-617 as shown below. A key element n the performance of any communcaton system s an antenna. Ask your Dealer about antennas and the best places to mount them. ■... -
Page 20: Options
OPTIONS SP-22 EXTERNAL SPEAKER Compact and easy-to-nstall. Input mpedance: 4 ø Max. nput power: 5 W HM-152/HM-152T/HM-148 hand microphone • HM-152 : Hand mcrophone. • HM-152T : DTMF mcrophone • HM-148 : Heavy duty mcrophone SM-25 Desktop mcrophone. UT-108 DTMF DECODER UNIT Provdes pager and code squelch capabltes. -
Page 21: Safety Training Information
3. IC-F621: The transmtter antenna s requred to be located outsde Durng transmssons, your Icom rado generates RF energy of a vehcle and kept at a separaton dstance of 50 cen- that can possbly cause nterference wth other devces or tmeters or more between the transmtter antenna of ths systems. -
Page 22: Fcc Information
FCC INFORMATION • FOR CLASS B UNINTENTIONAL RADIATORS: Ths equpment has been tested and found to comply wth the lmts for a Class B dgtal devce, pursuant to part 15 of the FCC Rules. These lmts are desgned to provde reasonable protecton aganst harmful nterference n a resdental nstallaton. - Page 23 MEMO...
- Page 24 A-6161H-1EX-e Prnted n Japan © 2002–2008 Icom Inc. (45W/50W) 1-1-32 Kammnam, Hrano-ku, Osaka 547-0003, Japan Prnted on recycled paper wth soy nk.
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Questions and answers
How to control squech
The squelch on the Icom IC-F521 is controlled by a noise squelch circuit. This circuit detects noise components in the AF signals and switches the AF mute switch accordingly. The squelch level is managed by a level controller (IC6, pins 21, 22), which processes signals from the FM IF IC (IC1, pin 9) and applies them to an active filter section (IC1, pin 8). Noise components around 10 kHz are amplified and converted into pulse-type signals by the noise detector section.
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