The Kenwood TM-281A is a 2 meter FM mobile transceiver providing a big 65 watts of power. You get 200 multi-parameter memory channels (or 100 when used with names). This radio is capable of displaying up to 6 large alphanumeric characters. And the vivid amber display may be adjusted to 32 levels of brightness. Also, the front panel and microphone keypads are both illuminated for ease of use. Many functions can be tailored to your preference via the easy-to-use menu system. Built-in continuous CTCSS and DCS rejects unwanted signals. This radio has NOAA weather channels built-in with automatic alert tone (1050 Hz) detection. Multiple scan methods are available. Other functions include 1750 Tone Burst, power-on message, reverse function, key lock, channel display mode, busy channel lock-out and direct frequency entry. The menu allows for easy control and selection of various functions. The 281A is Narrow band FM ready. The TM-281A is tough enough for off-road assignments and meets MIL-STD 810C, D, E, F and G environmental standards for vibration and shock. Compact 6.3 x 1.69 x 4.69 inches (160x43x126mm).

Specifications

GENERAL
Antenna Impedance 50 ohms
Current Drain Receive Less than 1 A
Current Drain Transmit Less than 14 A
Dimensions (W x H x D) 6.3 x 1.69 x 4.69 in. (160 x 43 x 126 mm)
Weight (approx.) 2.6 lbs. (1.2 kg)
Frequency Range TX: 144 - 148 MHz
RX: 136 - 174
Ground Negative
Microphone Impedance 600 ohms
Frequency Tolerance ± 2.5 PPM -20°C to 60°C
Mode F3E (FM)
Operating Temperature Range -20°C to 60°C
Power Requirement 13.8V DC (±15%)
 RECEIVER
Audio Output Power More than 2W (8 ohms, 5% distortion)
Circuitry Double conversion superheterodyne
Intermediate Frequency 1st IF 49.95 MHz
Intermediate Frequency 2nd IF 450 kHz
Selectivity -6 dB More than 12 kHz (Narrow 10 kHz)
Selectivity -60 dB Less than 30 kHz (Narrow 24 kHz)
Sensitivity (12dB SINAD) Less than 0.18µV
Squelch Sensitivity Less than 0.10µV
 TRANSMITTER
Frequency Tolerance Within ±10 ppm
Maximum Frequency Deviation ±5 kHz
Modulation Reactance modulation
Modulation Distortion Less than 3% (300 Hz ~ 3 kHz)
RF Output Power HI 65 W
RF Output Power LO 25 W