The Icom IC-281H 2 meter mobile FM transceiver boasts 50 watts output plus 440 band receive (440-450 MHz) for full duplex crossband operation. Other features include 60 regular memories, 10 scratch pad memories, 14 auto dialer memories, built-in pager and code squelch functions and auto memory channel advance.
The Icom IC-481H is similar to the IC-281H, but transmits on the 440-450 MHz band (35/10/5 watts) instead of 2 meters. This model receives 400-479 MHz plus 136-174 MHz. It requires 13.8 VDC at 10.5 amps.
| Type: | Amateur UHF transceiver | ||
| Frequency range: | TX: 430-440 MHz (Europe) TX: 440-450 MHz (USA) RX: 136-174 / 400-479 MHz |
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| Tuning steps: | 5 / 10 / 12.5 / 15 / 20 / 25 / 30 / 50 KHz | ||
| Mode: | FM | ||
| Memory channels: | 30 regular, 6 scan edge and 1 call channel per band (74 in total) | ||
| Power supply: | 13.8 VDC ±15% | ||
| Current drain/power consumption: | RX: 0.8-1 A TX: Max 10.5 A |
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| Antenna impedance/connector: | 50 ohms / N-jack | ||
| Dimensions (W*H*D): | 140*40*171 mm (5.5*1.6*6.7") | ||
| Weight: | 960 gr (2.1 lb) | ||
| Other features: | Capable of 1200/9600 bd packet operation | ||
| RECEIVER SECTION | |||
| Receiver system: | Double conversion superheterodyne 1st IF: 42.45 MHz 2nd IF: 455 KHz |
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| Sensitivity: | VHF: 0.18 uV (12 dB SINAD) UHF: 0.16 uV (12 dB SINAD) |
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| Selectivity: | 15 KHz (-6 dB) 30 KHz (-60 dB) |
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| Image rejection: | 60 dB | ||
| AF output power/speaker: | 2.4 W at 10% distortion / 8 ohms | ||
| External speaker connector: | 3.5 mm / 4-8 ohms | ||
| TRANSMITTER SECTION | |||
| RF output power: | Hi: 35 W Mid: 10 W Lo: 5 W |
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| Modulation system: | Variable reactance | ||
| Max FM deviation: | ±5 KHz | ||
| Spurious emissions: | Less than -60 dB | ||
| Microphone connector/impedance: | 8-pin modular / 600 ohms | ||
| MISCELLANEOUS | |||
| Manufactured: | Japan, 1994-199x (Discontinued) | ||
| Additional info: | |||
| Related documents: | User manual (5.7 MB) | ||
| Modifications: | |||
| Options/Accessories: |
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