This information is taken directly off of the ICOM IC-F3S/IC-F4S brochure. General Frequency coverage (Varies according to version) IC-F3S 136.000 -150.000 MHz 146.000 - 174.000 MHz IC-F4S 400.000 - 430.000 MHz 440.000 - 470.000 MHz Mode: 16KOF3E (25 kHz type) 8K5OF3E (12.5 kHz type) Number of channels: 32 Power supply requirement: 9.6 V DC (negative ground) Current drain Tx High Power 1.3 A (IC-F3S)/1.4 A (IC-F4S) Low power 0.6 A (IC-F3S)/0.7 A (IC-F4S) Rx Rated audio 250 mA Standby 60 mA Frequency stability: 0.0005% (EIA) 1500 Hz (ETS/CEPT) Operating temperature range: IC-F3S: -25C to +55C (ETS/CEPT) IC-F4S: -20C to +55C (ETS/CEPT) -22F to +140F (EIA) Dimensions (projections not included): 57(W) x 140(H) x 37(D) mm 2-1/4(W) x 5-1/2(H) x 1-15/32 (D) in Weight (with antenna and battery): 390 g (13.8 oz) Transmitter Output power: (at 9.6 V DC) IC-F3S 5 W or 1 W IC-F4S 4 W or 1 W Modulation system: Variable reactance frequency modulation Max. frequency deviation: 5.0 kHz (25 kHz type) 2.5 kHz (12.5 kHz type) Spurious emissions: -70 dB typical (EIA) 0.25 W (ETS/CEPT) Adjacent channel power: -70 dB (25 kHz type) -60 dB (12.5 kHz type) External mic. connector: 3-conductor 2.5 (d) mm (1/10")/2 k ohms Receiver Receive system: Double-conversion superheterodyne Intermediate frequencies 1st 31.05 (IC-F3S)/46.35 MHz (IC-F4S) 2nd 450 kHz Sensitivity (typical): for 12 dB SINAD: 0.25 V (IC-F3S) / 0.3 V (IC-F4S) EMF: for 20 dB SINAD: 0.63 V (IC-F3S) / 0.79 V (IC-F4S) Squelch sensitivity (typical) : 0.25 V (IC-F3S) / 0.3 V (IC-F4S) (threshold) Adjacent channel selectivity: 70 dB (25 kHz type), 60dB (12.5 kHz type)
Spurious response rejection: 70 dB Intermodulation rejection: 65 dB Audio output power (at 9.6 V DC): 500 mW at 10% distortion External speaker connector: 3-conductor 3.5 (d) mm (1/8")/8 ohms
Options Options BC-110A/D/V WALL CHARGER Regularly charges the connected battery pack. BC-119 DESKTOP CHARGER + AD-81 CHARGER ADAPTER For rapid charging of battery packs. An AC adapter is supplied with the charger. Charging time: 1 to 1.5 hrs. BC-121 MULTI-CHARGER + six AD-81 CHARGER ADAPTER For rapid charging up to 6 battery packs simultaneously. An AC adapter may be supplied depending on version. Six AD-81s are necessary. Charging time: 1 to 1.5 hrs. BP-194 BATTERY CASE Battery case for AA(R6) x 8 batteries. BP-195/BP-196 BATTERY PACKS BP-195: 9.6 V/700mAh; BP-196: 9.6 V/1050 mAh HM-46 SPEAKER-MICROPHONE Slim dimensions. Equipped with an earphone jack and a transmit indicator. HM-54 SPEAKER-MICROPHONE For operation while conveniently hanging the transceiver from your belt, etc. HM-75A SPEAKER-MICROPHONE Allows you to remotely select operating channels, etc. HS-51 HEADSET For hands-free operation. Includes VOX, PTT and "one-touch" PTT with a time-out timer. MB-68 BELT CLIP Allows you to attach the transceiver to your belt. Same as supplied. OPC-254L CHARGING CABLE For charging ONLY--the transceiver cannot be simultaneously operated. CP-12L CIGARETTE LIGHTER CABLE WITH NOISE FILTER Allows you to charge a battery pack connected to the transceiver via a DC power source (12 to 16 V DC). For charging ONLY--the transceiver cannot be simultaneously operated. SP-13 EARPHONE Provides clear audio in noisy environments. UT-80 2-TONE UNIT Provides the transceiver with 2-tone decode capability. UT-96 5-TONE UNIT Provides the transceiver with 5-tone encode/decode capability. UT-105 SmarTrunk II(TM) Logic Board. Provides SmarTrunk II(TM) capabilities.

This information is taken directly off of the ICOM IC-F3/IC-F4 brochure. General Frequency coverage (Varies according to version) IC-F3: 136.000 -150.000 MHz 146.000 - 174.000 MHz IC-F4: 400.000 - 430.000 MHz 440.000 - 470.000 MHz Mode: 16KOF3E (25 kHz type) 8KOF3E (12.5 kHz type) Number of channels: 32 Power supply requirement: 9.6 V DC (negative ground) Current drain Tx High Power 2.0 A Low power 1.0 A Rx Rated audio 300 mA Standby 60 mA Frequency stability: 0.0005% (EIA) 1500 Hz (ETS/CEPT) Usable temperature range: +14F to +140F (EIA) -10C to +55C (ETS/CEPT) Dimensions (proj. not included): 57(W) x 140(H) x 37(D) mm 2(W) x 5(H) x 1 15/32 (D) in Weight (with antenna and battery): 390 g (13.8 oz) Transmitter Output power: (at 9.6 V DC) IC-FW or 1 W IC-FW or 1 W Modulation system: Variable reactance frequency modulation Max. frequency deviation: +/- 5.0 kHz (25 kHz type) +/- 2.5 kHz (12.5 kHz type) Spurious emissions: -70 dB typical (EIA) 0.25 MW (ETS/CEPT) Adjacent channel power: -70 dB (25 kHz type) -60 dB (12.5 kHz type) External mic. connector: 3-conductor 2.5 (d) mm (1/10")/2 k ohms Measurements made in accordance with EIA/TIA-152-C, 204D, 603 or ETS-300-086 or CEPT T/R 24. Receiver Receive system: Double-conversion superheterodyne Intermediate freq. (F3/F4) 1st 31.05/46.35 MHz 2nd 450 kHz Sensitivity (typ.; F3/F4) for 12 dB SINAD 0.25/0.3 V EMF: for 20 dB SINAD 0.63/0.79 V Squelch sensitivity (typ.; F3/F4) : 0.25/0.3 mV (at threshold)
Adjacent channel selectivity: 70 dB (25 kHz type) 60dB (12.5 kHz type) Spurious response rejection: 70 dB Intermodulation rejection: 65 dB Audio output power (at 9.6 V DC): 500 mW at 10% distortion External speaker connector: 3-conductor 3.5 (d) mm (1/8")/8 ohm
Options Options BC-110A/D/V WALL CHARGER Regularly charges the connected battery pack. BC-119 DESKTOP CHARGER + AD-81 CHARGER ADAPTER For rapid charging of battery packs. An AC adapter is supplied with the charger. Charging time: 1 to 1.5 hrs. BC-121 MULTI-CHARGER + AD-81 CHARGER ADAPTER For rapid charging up to 6 battery packs simultaneously. An AC adapter may be supplied depending on version. Six AD-81s are necessary. Charging time: 1 to 1.5 hrs. BP-194 BATTERY CASE Battery case for AA(R6) x 8 batteries. BP-195/BP-196 BATTERY PACKS BP-195: 9.6 V/700mAh; BP-196: 9.6 V/1050 mAh HM-46 SPEAKER-MICROPHONE Slim dimensions. Equipped with an earphone jack and a transmit indicator. HM-54 SPEAKER-MICROPHONE For operation while conveniently hanging the transceiver from you belt, etc. HM-75A SPEAKER-MICROPHONE Allows you to remotely select operating channels, etc. HS-51 HEADSET For hands-free operation. Includes VOX, PTT and "one-touch" PTT with a time-out timer. OPC-254L DC CHARGING CABLE Allows you to charge a battery pack connected to the transceiver via a DC power source (13.5 to 16 V DC). For charging ONLY. The transceiver cannot be simultaneously operated. OPC-474 CLONING CABLE Used for radio-to-radio data cloning. SP-13 EARPHONE Provides clear audio in noisy environments. UT-80 2-TONE UNIT Provides the transceiver with 2-tone decode capability. UT-96 5-TONE UNIT Provides the transceiver with 5-tone encode/decode capabilities.