Whatever the mission, wherever you go, KENWOOD’s TM-281A is a radio you can count on. This compact transceiver delivers powerful mobile performance and such advanced features as multiple scan functions and memory names. High-quality audio is assured by the large speaker. Naturally, MIL-STD compliant toughness ensures rugged reliability. And operating ease is second to none: illuminated keys and a large LCD with adjustable backlighting make for user-friendly operation day or night.
RUGGED, COMPACT CONSTRUCTION
The TM-281A is tough enough for off-road assignments: it meets the strict U.S. Department of Defense MIL-STD 810 C, D, E, F & G environmental standards for vibration and shock. Installation is easy due to its compact dimensions: 160 (W) x 43 (H) x 126 (D)* mm .
* Total depth of 170.5 mm with protrusion
HIGH POWER OUTPUT (65 W)
Even with its compact size, the TM-281A delivers up to 65 watts – the sort of RF power you want in the wilderness – with a choice of High/Low output. A hand microphone is also supplied as standard.
ALPHANUMERIC LCD AND ILLUMINATED KEYPAD
The vivid amber LCD display comes with a 32-step brightness control to suit any ambient light conditions. It displays up to 6 large alphanumeric characters. The front panel keypads are also illuminated for ease of use.
IMPRESSIVE FRONT SPEAKER
The large oval speaker (58 x 35 mm) mounted in the front ensures every message is heard loud and clear.
MEMORY NAME FUNCTION
Up to 100 memory channels can be identified with a maximum of 6 alphanumeric characters each. (200 channels are available if the memory name function is not used.)
200 MEMORY CHANNELS PLUS 1 CALL-CHANNEL
Each of the memory channels can be used to store transmit and receive frequencies independently. Additionally, memory data can be edited and stored on a computer*.
*Requires USB Programming Cable KPG-46U, and Memory Control Software MCP-1A (Ver.3.0 or later); consult your local dealer for details on purchasing these options.
MULTIPLE SCAN FUNCTIONS
Included as standard are VFO scan, memory scan, call scan, Tone/CTCSS scan and DCS scan – with TO (Time-operated), CO (carrier-operated) and seek scan resume modes. Also priority scan is available to check the Priority channel every 3 seconds.
CTCSS & DCS ENCODER/DECODER
The built-in CTCSS and DCS encoder/decoder covers 42 CTCSS sub-tone frequencies and 104 DCS sub-tone frequencies.
- Power-on Message
- Wide/Narrow Deviation Selection (per channel)
- 1750 Hz Tone Burst
- Automatic Simplex Checker
- Reverse Function
- Auto Repeater Offset
- Beep On/Off
- Auto Power Off
- Time-Out Timer
- Channel Display Mode
- Busy Channel Lockout
- Memory Channel Lockout
- Direct Frequency Entry
- Key Lock
Specifications Kenwood TM-281A
|Frequency Range||TX||144 – 148 MHz|
|RX||136 – 174 MHz|
|Power Requirement||13.8 V DC ±15 %, negative ground|
|Curent Drain||Transmit||Less than 14 A (High), less than 8 A (Low)|
|Receive||Less than 1 A|
|Operation Temperature Range||-20 °C ~ +60 °C|
|Antenna Impedance||50 Ω|
|Microphone Impedance||600 Ω|
|Frequency Tolerance||±2.5 ppm (-20 °C ~ +60 °C)|
|Dimensions (W x H x D),||160 x 43 x 126 mm|
|(Projections included)||161 x 43 x 170.5 mm|
|RF Power Output Hi / Lo||65 W / 25 W|
|Modulation||Variable reactance modulation|
|Maximum Frequency Deviation||Wide: ±5 kHz, Narrow: ±2.5 kHz|
|Modulation Distortion||Less than 3 % (300 Hz – 3 kHz)|
|Circuitry||Double super heterodyne|
|Intermediate||1st IF||49.95 MHz|
|2nd IF||450 kHz|
|Sensitivity (12 dB SINAD)||Less than 0.18 μV|
|(Narrow: less than 0.22 μV)|
|Squelch Sensitivity||Less than 0.1 μV|
|Selectivity||-6 dB||More than 12 kHz (Narrow: more than 10 kHz)|
|-60 dB||Less than 30 kHz (Narrow: less than 24 kHz)|
|Audio Output Power||More than 2 W (5 % distortion)|
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