TM-281A_broch.pdf
TM-281A 144 MHz FM Transceiver Wild at Heart On or off the road, Kenwoods TM-281A is a mobile radio you can always count on. As tough as nails, this MIL-STD-compliant transceiver delivers powerful performance, excellent audio clarity, and a host of advanced features. It offers superb operating ease day or night thanks to the large backlit LCD and illuminated keys. So the next time you take off, take the TM-281A. 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 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. 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. OTHER FUNCTIONS 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 Memory nameMenu ModePower-on Message TM-281A GENERAL Frequency Range TX RX 144 - 148 MHz 136 - 174 MHz ModeF3E (FM) Power Requirement13.8 V DC 15 %, negative ground Current Drain Transmit Receive Less than 14 A (High), less than 8 A (Low) Less than 1 A Operation Temperature Range-20 C +60 C Antenna Impedance50 ohms Microphone Impedance600 ohms Frequency Tolerance2.5 ppm (-20 C +60 C) Dimensions (W x H x D), (Projections included) 6.30 x 1.69 x 4.69 in (160 x 43 x 126 mm) 6.33 x 1.69 x 6.71 in (161 x 43 x 170.5 mm) Weight2.5 lb (1.13 kg) TRANSMITTER RF Power Output Hi / Lo65 W / 25 W ModulationVariable reactance modulation Maximum Frequency DeviationWide: 5 kHz, Narrow: 2.5 kHz Modulation DistortionLess than 3 % (300 Hz - 3 kHz) RECEIVER CircuitryDouble super heterodyne Intermediate 1st IF 2nd IF 49.95 MHz 450 kHz Sensitivity (12dB SINAD)Less than 0.18 V (Narrow: less than 0.22 V) Squelch SensitivityLess than 0.1 V Selectivity -6 dB -60 dB More than 12 kHz (Narrow: more than 10 kHz) Less than 30 kHz (Narrow: less than 24 kHz) Audio Output PowerMore than 2 W (5 % distortion) Applicable MIL-STD MIL-STD Method / Procedures 810C810D810E810F810G Vibration 514.2/Proc. VIII, X 514.3/Proc. I Category 8 514.4/Proc. I Category 8 514.5/Proc. I Category 20 514.6/Proc. I Category 20 Shock516.1/Proc. I, II, V 516.3/Proc. I , IV 516.4/Proc. I , IV 516.5/Proc. I , IV 516.6/Proc. I , IV Kenwood has always connected with people through sound. Now we want to expand the world of sound in ways that only Kenwood can, listening to our customers and to the pulse of the coming age as we head toward a future of shared discovery, inspiration and enjoyment. Not all accessories are available in all markets. For availability, contact your nearest dealer. Kenwood follows a policy of continuous advancement in development. For this reason specifications may be changed without notice.
