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Last modified 2022-06-29

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Kenwood TR-7850

A picture of Kenwood TR-7850 (USA version)

SPECIFICATIONS

GENERAL
Type:Amateur VHF transceiver
Frequency range: Europe
TX: 144-146 MHz
RX: 144-146 MHz
USA
TX: 143.9-149 MHz
RX: 143.9-149 MHz
Tuning steps:5 / 25 KHz (Europe)
5 / 10 KHz (USA)
Frequency stability:Less than 20 ppm @ -20 to +50C (-4 to +122F)
Mode:FM
Channels / memory management: 13 regular
1 with independent RX/TX frequencies
1 priority
RAM storage. Four R6/AA NiCd battery backup (Less than 2 mA with 13.8 VDC disconnected)
Repeater shift / offset:600 KHz
Power supply:13.8 VDC 15%
Current drain / power consumption:RX: 400-900 mA
TX: Max 9 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):175*64*220 mm (6.89*2.52*8.66")
Weight:2.2 Kg (4.85 lb)
Other features: 1750 Hz tone call (Europe). DTMF encoder (USA).
CTCSS/PL option (USA)




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity:0.2 uV (12 dB SINAD)
Selectivity:12 KHz (-6 dB)
24 KHz (-60 dB)
Image rejection:
AF output power / speaker:2 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power:

HighLow
2 m:40 W5 W
Modulation system:Variable reactance direct shift
FM deviation (Factory set):5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:500 ohm / 6-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1981-1982 (Discontinued)
Additional info: New price 1981 in the US: $399.00
Related documents:User manual (4.8 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
BC-1
MB-9
SP-40
Memory backup charger/power supply
Quick release mobile bracket
Mobile speaker