Product Description
Kenwood TM-281A
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.
OTHER FUNCTIONS
– 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
Specifications Kenwood TM-281A
| GENERAL | ||
|---|---|---|
| Frequency Range | TX | 144 – 148 MHz |
| RX | 136 – 174 MHz | |
| Mode | F3E (FM) | |
| 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), (Projections included) |
160 x 43 x 126 mm 161 x 43 x 170.5 mm |
|
| Weight | 1.13 kg | |
| TRANSMITTER | ||
| 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) | |
| RECEIVER | ||
| 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) | |
KENWOOD follows a policy of continuous advancement in development.
For this reason specifications may be changed without notice.
Applicable MIL-STD & IP
| MIL-STD | MIL 810C Methods/ Procedures |
MIL 810D Methods/ Procedures |
MIL 810E Methods/ Procedures |
MIL 810F Methods/ Procedures |
MIL 810G Methods/ Procedures |
|---|---|---|---|---|---|
| Vibration | 514.2/ Procedure VIII, X |
514.3/ Procedure I Category 8 |
514.4/ Procedure I Category 8 |
514.5/ Procedure I Category 20 |
514.6/ Procedure I Category 20 |
| Shock | 516.1/ Procedure I, II, V |
516.3/ Procedure I , IV |
516.4/ Procedure I , IV |
516.5/ Procedure I , IV |
516.6/ Procedure I , IV |
Kenwood TM-281A – Catalogue
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