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TM-281AM2
VHF Mobile FM Transceiver (non-EU use)
Discontinued model
Key Features
| Frequency Coverage: 136-174 MHz |
| 201 Memories (100 with alpha-tagging) |
| 65 Watt RF Output |
| High-Quality Front Mounted Loudspeaker |
| Built-In CTCSS/DCS Encoder/Decoder |
| Rugged Construction to US MIL-STD 810G |
| Replaces previous TM-271A models |
Supplied With
| D.C. Cable | Yes |
| Instruction Manual | Yes, English, Spanish & French |
| Microphone | Yes, KMC-30 Non-keypad Hand Microphone |
| Microphone Hanger | Yes |
| Mounting Bracket | Yes |
| Screw Set | Yes |
Amateur Radio General Features
| 1750 Hz Tone Burst Function. | Yes |
| Alphanumeric LCD Display | Yes |
| Antenna Socket | SO-239 (M-Type) |
| Auto Power Off | Yes |
| Auto Repeater Offset | Yes |
| Automatic Simplex Checker | Yes |
| Beat Shift Function | Yes |
| Busy Channel Lock-out | Yes |
| Calling Channel Function | Yes |
| Channel Display Mode | Yes |
| CTCSS Encoder/Decoder | Yes, 42 EIA Tones with Tone Scan function |
| DCS Encoder/Decoder | Yes, 104 Tones with Tone Scan function |
| Direct Frequency Entry | Yes |
| DTMF Encoder | Yes |
| DTMF Memory | Yes, 10 DTMF memories of 16 digits each |
| High-Quality Front Speaker | Yes |
| Illuminated Front Panel Keys | Yes |
| Key Beep On/Off | Yes |
| Key Lock | Yes |
| Loudspeaker Socket | 3.5 mm |
| Memory Channel Lock-out | Yes |
| Memory Channels | 201 Channels |
| Memory Channels with Alpha-tagging | 100 Memory Channels |
| Menu System for individual set-up | Yes |
| Microphone Socket | RJ-45 |
| Monitor Function | Yes |
| MR-Shift | Yes |
| Multiple Scan Functions | Yes |
| PC Programmable Memories | Yes |
| Power-On Message | Yes |
| Reverse Repeater Checker | Yes |
| Time-Out Timer | Yes |
| Variable LCD Brightness with Automatic Dimmer | Yes |
| Wide/Narrow Deviation Selection | Yes |
Amateur Mobile Specifications
| RF Output Power (approx.) - High | 65 W |
| RF Output Power (approx.) - Low | 25 W |
| TX Frequency Coverage - VHF | 136 MHz to 174 MHz |
| RX Frequency Coverage - VHF | 136 - 174 MHz |
| Transmitter Modulation | Variable-Reactance modulation |
| Transmitter Modulation Distortion | Less than 3% (300 Hz to 3 kHz) |
| Transmitter Maximum Frequency Deviation - Wide | ± 5 kHz |
| Antenna Impedance - 50 Ohm | Yes |
| Audio Output Power | More than 2 W (5% Distortion) |
| Weight | 1.13 kg (approx.) |
| Current Drain - RX | Less than 1 A |
| Current Drain - TX | Less than 14 A (Hi-Power), Less than 8 A (Low-Power) |
| Dimensions | 160 mm (W) x 43 mm (H) x 126 mm (D) - excluding projections |
| Frequency Step Sizes | 2.5, 5, 6.25, 10, 12.5, 15, 20, 25, 30, 50 and 100 kHz |
| Frequency Stability | ± 2.5 ppm (-20 °C to +60 °C) |
| Microphone Impedance | 600 Ohms |
| Modes - F3E FM | Yes |
| Operating Temperature Range | -20 °C to +60 °C |
| Power Requirement - 13.8 V DC ± 15% | Yes |
| Receiver Circuitry | Double Super Heterodyne |
| Receiver Intermediate Frequency - 1st IF | 49.95 MHz |
| Receiver Intermediate Frequency - 2nd IF | 450 kHz |
| Receiver Selectivity - Narrow | More than 10 kHz at -6 dB, Less than 24 kHz at -60 dB |
| Receiver Selectivity - Wide | More than 12 kHz at -6 dB, Less than 30 kHz at -60 dB |
| Receiver Sensitivity - Narrow | Less than 0.22 µV at 12 dB SINAD |
| Receiver Sensitivity - Wide | Less than 0.18 µV at 12 dB SINAD |
| Receiver Squelch Sensitivity | Less than 0.1 µV |