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: 6.30 (W) x
1.69 (H) x 4.69 (D) inches (160 x 43 x 126 mm)*.
* Total depth of 6.71 inches or 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 DTMF 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 and microphone keypads are also illuminated for ease of use.
IMPRESSIVE FRONT SPEAKER
The large oval speaker (2.28 x 1.38 inches or 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
CTCSS & DCS ENCODER/DECODER
The built-in CTCSS and DCS encoder/decoder covers 42 CTCSS sub-tone frequencies and 104 DCS sub-tone frequencies.
WEATHER ALERT/RX (US only)
Providing an extra level of security, the TM-281A can receive the NOAA Weather Band and respond to emergency transmissions such as storm warnings by emitting an audible alert tone.
❚ 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 ❚ MR-shift ❚ Direct Frequency Entry ❚ Key Lock
Frequency Range: TX 144 - 148 MHz
RX 136 - 174 MHz
Mode: F3E (FM)
Power Requirement: 13.8 V DC ±15 %, negative ground
Current 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 ohms
Microphone Impedance: 600 ohms
Frequency Tolerance: ±2.5 ppm (-20 °C ~ +60 °C)
Dimensions (W x H x D) : 6.30 x 1.69 x 4.69 in (160 x 43 x 126 mm)
(Projections included) : 6.33 x 1.69 x 6.71 in (161 x 43 x 170.5 mm)
Weight /; 2.5 lb (1.13 kg)
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
2 nd IF : 450 kHz
Sensitivity (12dB 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)
Kenwood follows a policy of continuous advancement in development.
For this reason specifications may be changed without notice.