For organizations who run an analog radio system and must migrate to a conventional P25 digital system, Icom provides one of the best solutions. The F1721/D series mobile allows you to program P25 digital and/or FM analog mode per channel. Flash ROM capability means future upgrades and flexible customization, tailored for your system. Moreover, built-in multiple tone signaling capability and an optional voice scrambler satisfy existing analog FM system requirements. Icom’s frequency range coverage and rugged construction ensures a flexible, long life radio for you. Icom is the smart choice for current – and future – public safety communication needs.
Channels: 256 channels, 32 zones
Output power: 50W, 45W
Frequencies: 136-174MHz, 400-470MHz, 450-512MHz
Programmable Keys: 5
Versions:
VHF analog with standard keypad
VHF P25 ready with standard keypad
UHF P25 ready with full DTMF keypad
UHF P25 upgradeable with full DTMF keypad
P25 Solution
The F1721D & F2821D is P25 compliant. The mixed mode scan is compatible with both analog FM mode and P25 digital mode allowing users to program digital and/or analog FM modes per channel. The mixed mode scan allows you to detect and receive both analog FM and P25 digital modes and to transmit either mode depending on programming.
The Smart Migration to a P25 Digital Radio System
Transmitter
Output power (approx)
50W (VHF)
45W (UHF)
Max. frequency deviation ±5.0/2.5 kHz (Wide/Narrow)
Frequency error ±2.0ppm
Spurious emissions 75dB typ.
FM Hum and Noise 45/40dB typ. (Wide/Narrow)
Adjacent channel power 70/60dB min. (Wide/Narrow)
Audio harmonic distortion: 3% typ. (40% deviation)
Modulation limiting 70–100% of Max. deviation
Ext. microphone impedance 600Ω (8-pin modular)
Receiver
Sensitivity
Analog (12dB SINAD)
Digital (5% BER)
0.25/0.3μV typ. (VHF/UHF)
0.25/0.3μV typ. (VHF/UHF)
Squelch sensitivity
0.25/0.3μV typ. (VHF/UHF)
73dB typ.
Adjacent channel selectivity
Analog
Digital
80/75dB typ. (Wide/Narrow)
73dB typ.
Spurious response 80dB typ.
Intermodulation
Analog
Digital
77/75dB typ. (Wide/Narrow)
77dB typ.
Hum and noise ratio
50/45dB typ. (Wide/narrow)
Audio output power
External audio (D-sub)
4W typ.
22W typ.
(at 10% distortion with an 8Ω load)
External speaker connector 2-conductor 3.5 (d) mm (1⁄8″)/4Ω
Rugged construction for Public Safety users
With heavy-duty construction, the F1721 series is built to last. The F1721 series incorporates a 4W speaker in an impact resistant polycarbonate front panel for crisp clear audio, and includes a backlit 10-keypad for extended operation.
Additional features
- High contrast LCD with dot matrix display and 1 or 2 lines of characters
- MDC1200 compatible
- Built-in CTCSS, DTCS, 2-tone, 5-tone
- Encode or decode up to 10 2/5-tone signals on a channel
- Detachable front panel for flexible installation
- Radio stun/kill disables a lost or stolen radio over the air
- Power-on password prevents unauthorized people turning on the radio
- Public address (PA) function allows user to speak through the radio mic
- RX speaker function allows user to relay the received audio over the loud speaker
- Microphone hanger action programmable (scan, monitor, priority channel)
- Optional OPC-617 D-SUB 9 pin connector for dimmer control, modem connection
- D-SUB 25 pin connector for future PC connection
- Built-in audio compander (Analog mode only)
Encryption options
For basic encryption the F1721 series comes with a built-in inversion type voice scrambler. For a slightly more secure system, the optional rolling and non rolling (UT-109/UT-110) are available. Many public safety agencies require high level encryption: AES & DES. Icom offers an AES and DES upgrade to provide secure encryption for the F1721D and F2821D mobiles.
Specifications
General
Frequency range
IC-F1721/D, F1821/D
IC-F2721/D, F2821/D
136–174 MHz
400–470 MHz
450–512 MHz
Number of channels 256 channels/ 32 zones
Channel spacing
12.5/25 kHz,
15/30 kHz
PLL channel step 2.5 kHz, 3.125 kHz (VHF)
5 kHz, 6.25 kHz (UHF)
Antenna impedance 50Ω
Operating Temp. range –30°C to +60°C
–22°F to +140°F
Power supply requirement 13.6V DC nominal
Current drain (approx)
Tx
Rx
50W/45W
Max. audio
Stand-by
14.0A
1200mA
600mA
Dimensions (W×H×D)
(projections not included)
175×45×170 mm
67⁄8 ×125⁄32 ×611⁄16 in
Weight (approx.) 1.5kg; 3.3lb
Applicable U.S. Military Specifications
Standard MIL 810 C MIL 810 D MIL 810 E MIL 810 F
Method Proc Method Proc Method Proc Method Proc
Low Pressure 500.1 I 500.2 I, II 500.3 I, II 500.4 I, II
High Temp. 501.1 I 501.2 I, II 501.3 I, II 501.4 I, II
Low Temp. 502.1 I 502.2 I, II 502.3 I, II 502.4 I, II
Temp. Shock 503.1 I 503.2 I 503.3 I 503.4 I
Solar Radiation 505.1 I 505.2 I 505.3 I 505.4 I
Humidity 507.1 I, II 507.2 II, III 507.3 II, III 507.4 –
Salt Fog 509.1 I 509.2 I 509.3 I 509.4 –
Dust Blowing 510.1 I 510.2 I 510.3 I 510.4 I
Vibration 514.2 VIII, X 514.3 I 514.4 I 514.5 I
Shock 516.2 I, II, V 516.3 I, IV 516.4 I, IV 516.5 I, IV
Supplied Accessories
Hand microphone, HM-148G
DC power cable
Microphone hanger
Mounting bracket kit
External speaker, SP-22*
Key assign stickers
* For IC-F1821/D, F2821/D only.