Specifications:

• Dimensions: 5.5 (W), 1.6 (H), 6.7 (D); 2 lb, 10 oz
• 25 W output power on IC-F520 version OR 50 W on IC-F521 version
• 4 W audio output
• 136-174 MHz
• 256 channels
• SIGNALING
• CTCSS, DTCS encode/decode standard
• Built-in 2 tone
• DTMF ANI with UT-108
• TRUNKING
• SmarTrunkII® optional
• LTR® optional
• 9 programmable buttons
• Independent AF volume knob
• 10 character alphanumeric LCD
• Invertible chassis to point the speaker up or down, for ease of installation
• Backlit keys
• Flash CPU advantage for future applications
• Fractional-N PLL provides faster lock up times
• Power on password and 'stun' features
• Microphone hanger function
• Normal/priority scan
• Built-in audio compander
• DTMF optional (HM-100TN required), DTMF redial and DTMF autodial
• MIL SPEC 810 C, D, E, F for:
• Low pressure
• High temperature
• Low temperature
• Temperature shock
• Solar radiation
• Rain
• Humidity
• Salt fog
• Dust
• Vibration
• Shock

• Frequency range :
• IC-F520/F521
• 136–174MHz
• IC-F620/F621
• 400–430MHz
• 440–490MHz
• 480–512MHz
• Number of channels : Max. 256 Ch/ 16 banks
• Channel spacing : 12.5/15kHz?25/30kHz
• Antenna impedance : 50?
• Frequency error : ±5.0ppm (VHF) ; ±2.5ppm (UHF)
• PLL channel step : 2.5 kHz, 5 kHz and 6.25 kHz
• Power supply requirement : 13.6 V DC
• Output power and current drain (approx) :

• Modulation system : Variable reactance frequency modulation
• Max. frequency deviation : ± 2.5kHz (narrow) ; ± 5kHz (wide)
• Modulation limiting : 70–100% (VHF) ; 60–100% (UHF)
• Audio harmonic distortion : 3% typ. (40% deviation)
• Spurious emissions : 70dB
• Adjacent channel power : 60dB (narrow) ; 70dB (wide)
• FM hum and noise : 40dB typ. (narrow) ; 46dB typ. (wide)
• External MIC impedance : 600 Ohm (8-pin modular)

• Sensitivity : 0.25µV typ. (at 12 dB SINAD)
• Squelch sensitivity : 0.25µV typ. (at threshold)
• Adjacent channel selectivity : 65dB typ. (narrow) ; 75dB typ. (wide)
• Spurious response : 70dB
• Intermodulation : 75dB typ. (wide)
• Hum and noise ratio : 40dB typ. (narrow) ; 45dB typ. (wide)
• Audio output power : 4W typ. at 10% distortion with a 4Ohm load
• External SP connector : 2-conductor 3.5 (d) mm (1/8") /4 ohm

• Hand mic. (HM-100N)
• DC power cable
• Mounting bracket kit
• Fuses
• Key assign stickers

• SM-25 Desktop Microphone
• OPC-617 Accessory Cable
• HM-100TN DTMF Microphone
• SP-10 External Speaker
• SP-5 External Speaker
• SP-22 External Speaker
• UT-105 Provides SmarTrunk II™ capabilities.
• UT-108 Provides DTMF decode and ANI capabilities.
• UT-109 (Ver. 02) Provides operating security. Up to 32 scrambling codes are available. The scrambling system is not compatible with the UT-110.
• UT-110 (Ver. 02) Provides higher operating security. Up to 1020 (255 codes × 4 groups) scrambling codes are available. The scrambling system is not compatible with the UT-109.
• UT-111 Provides LTR® trunking capabilities.