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Last modified 2014-01-26

Kenwood TM-421ES

A picture of Kenwood TM-421ES

SPECIFICATIONS

GENERAL
Type:Amateur UHF transceiver
Frequency range:430-440 MHz
Tuning steps:5 / 10 / 12.5 / 15 / 20 / 25 KHz
Mode:FM
Channels/memory management:10 regular (0-9) of which #1 functions as priority channel
2 band edge search limits
2 odd repeater split
Lithium battery backup
Repeater shift/offset:- 1.6/7.6 MHz (Europe, general market)
+/- 1.6 MHz (UK market)
Power supply:13.8 VDC 15%
Current drain/power consumption:RX: 400 mA (no signal)
TX: Max 8.5 A
Antenna impedance/connector:50 ohms / SO-239 on pigtail
Dimensions (W*H*D):141*42*193 mm (5.55*1.65*7.6")
Weight:1.2 Kg (2.65 lbs)
Other features:




RECEIVER SECTION
Receiver system:Double conversion superheterodyne
1st IF: 21.6 MHz
2nd IF: 455 KHz
Sensitivity:0.16 uV (12 dB SINAD)
Selectivity:12 KHz (-6 dB), 26 KHz (-60 dB)
Image rejection:
AF output power/speaker:2 W at ?% distortion / 8 ohms
External speaker connector:3.5 mm, 8 ohms




TRANSMITTER SECTION
RF output power:Hi: 35 W
Lo: 5 W
Modulation system:Reactance modulation
Max FM deviation:5 KHz
Spurious emissions:Less than -60 dB
Microphone connector/impedance:8-pin / 500-600 ohms




MISCELLANEOUS
Manufactured:Japan, 1987-198x (Discontinued)
Additional info:
Related documents:User manual (2.2 MB)
Modifications:
Options/Accessories:
HS-7
MB-201
MC-43S
MC-48B
MC-55
MC-60A
MC-80
MC-85
PG-2N
PG-3B
PS-50
PS-430
RC-10
SP-40
SP-50B
SP-430
SW-100A
SW-100B
SW-200A
SW-200B
SWT-1
SWT-2
Micro headphones, 16 ohms
Mobile mount
Hand microphone with up/down buttons
Hand microphone with up/down and DTMF
Mobile microphone with up/down buttons
Desk microphone with up/down and lock buttons
Desk microphone with up/down and lock buttons
High class electret desk microphone
DC power cable
DC line noise filter
Heavy duty DC power supply
DC power supply
Remote controller with DTMF/autopatch
Compact mobile speaker, 4 ohms
Mobile speaker, 8 ohms
External speaker
Compact SWR/Power/Volt meter, 1.8-150 MHz
Compact SWR/Power/Volt meter, 140-450 MHz
SWR/power meter. Peak or RMS. 1.8-150 MHz
SWR/power meter. Peak or RMS. 140-450 MHz
Antenna tuning unit, 2 m
Antenna tuning unit, 70 cm