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Last modified 2022-06-20

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Kenwood TM-281A

A picture of Kenwood TM-281A

SPECIFICATIONS

GENERAL
Type:Amateur VHF transceiver
Frequency range: USA & Canada
TX: 144-148 MHz
RX: 136-173 MHz
Tuning steps:2.5 / 5 / 6.25 / 10 / 12.5 / 15 / 20 / 25 / 30 / 50 / 100 KHz
Frequency stability:2.5 ppm @ -20 to +60C (-4 to +140F)
Mode:FM / FMN
Channels / memory management: 200 regular (100 if used with alpha tags - up to six characters)
1 call
Non volatile EEPROM storage
Repeater shift / offset:600 KHz (0 to 69.95 MHz 50 KHz steps)
Power supply:13.8 VDC 15%
Current drain / power consumption:RX: Max 1 A
TX: Max 14 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):160*43*126 mm (6.3*1.69*4.69")
Weight:1.13 Kg (2.5 lb)
Other features: CTCSS/PL and DCS with tone scan. 1750 Hz repeater tone. DTMF.
NOAA weather channels with tone alert.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 49.95 MHz
2nd IF: 450 KHz
Sensitivity: FM: 0.18 uV (12 dB SINAD)
FMN: 0.22 uV (12 dB SINAD)
Selectivity: FM
12 KHz (-6 dB)
30 KHz (-60 dB)
FMN
10 KHz (-6 dB)
24 KHz (-60 dB)
Image rejection:
AF output power / speaker:2 W at 5% distortion / 8 ohm
External speaker connector:3.5 mm




TRANSMITTER SECTION
RF output power:

HighLow
2 m:65 W25 W
Modulation system:Variable reactance modulation
FM deviation (Factory set):FM: 5 KHz
FMN: 2.5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:600 ohm / 8-pin (Modular)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:China, 2011-20xx
Additional info:
Related documents:User manual (4.3 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
KES-3S
KMC-30
MC-59
MC-60A
MCP-1A
MJ-88
PG-2N
PG-3B
PS-60
External speaker
Hand microphone
Hand microphone with DTMF keypad
Desk microphone (Requires MJ-88)
Memory control software
Modular-to-8-pin microphone adapter
DC power cable
DC line noise filter
Power supply. 13.8 VDC, 22.5 A