TR-7850

Name: Kenwood TR-7850 transceiver
Brand: Kenwood
SKU: TR-7850
Price: 85.00 EUR
Availability: OnlineOnly

Specifications

Prices

40 Watts, 2 meters FM mobile transceiver. Hi/Low selectable power output, double conversion superheterodyne, can memorize transmit and receive frequencies independently for any repeater offset operation, 1750 Hz tone call or DTMF encoder, extended frequency coverage on USA version. Radio with 148 semiconductors and 20 integrated circuits. Ideated in Japan, year of introduction 1981.

Reference market : amateur-radio

TR-7850 specifications

General

Frequency coverage
Receive	144.0000 ~ 145.9950 MHz [1] 143.9000 ~ 148.9950 MHz [2]
Transmit	144.0000 ~ 145.9950 MHz [1] 143.9000 ~ 148.9950 MHz [2]
Mode
FM
Tuning step
5 / 10 [2] / 25 [1] kHz

Receiver

Sensitivity
FM	<0.2 uV (12dB SINAD) <0.5 uV (30dB S/N)
Selectivity
FM	>12 kHz (-6dB) <24 kHz (-60dB)
Image rejection
>60 dB
Frequency accuracy
±20ppm max with temperature from -20°C to +50°C
IF (Intermediate Frequency)
1°	10.695 MHz
2°	455 kHz
Squelch sensitivity
<0.16 uV (threshold)

Transmitter

Output power
FM	1~15 [3] / 40 W
Spurious emission
<-60 dBc (at 40W power) <-53 dBc (at 1~15W power)
Maximum deviation (FM)
±5.0 kHz
Microphone
500Ω

Features

Memory
13 standard memories (M1~M13) 1 split RX/TX frequency memory (M14) 1 priority channel / split RX/TX frequency memory (M0)
Display
1 kHz frequency resolution 5-segments signal meter bar
Selective calling
1750 Hz tone [1] DTMF [2] / CTCSS tones [4]
Antenna
SO239 50Ω
Power supply
13.8 VDC (±15%) 4 x AA NiCd batteries (RAM back up) [5]
Power consumption
<2mA (RAM back up, from battery) <3mA (RAM back up, from power supply) 400mA RX (with no input signal) 9A TX (at 40W power)
Audio power
>2W on 8Ω
Audio output
Jack 3.5 mm (external speaker)
Connections
Jack 6-pin (Mic) Terminal (RAM back up)

Mechanical and environmental data

Operating temperature
from -20°C to +50°C
Dimensions
175 (W) x 64 (H) x 220 (D) mm without projections
Weight
2.2 kg

European version.
USA version.
Low power may be adjusted by VR4 trimmer on final unit. Low power vary according to frequency.
Option.
Batteries are charged while transceiver is connected to power supply.

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TR-7850 battery back-up system :

With power supplied directly from the vehicle battery, the microprocessor continues operationg even when the power switch is Off. Current drain is approximately 2.5 mA.

Trio Kenwood TR-7850 battery back-up system

If you wish to retain the memories even when moving the unit between the car and the fixed station, utilize a bettery back-up system. Otherwise, all the memories are cleared when the power cord is disconnected. For back-up use four AA NiCd batteries, see figure.

TR-7850 price

We have collected for your convenience the Trio Kenwood TR7850 sale price (Euro) and its trend over time. Useful to guarantee a cheaper purchase of this radio and to put it for sale in the second-hand market. Of course offers, accessories, warranty terms and conditions can lead to different figures.

Price	Date	Condition
EUR 85.00	2020-may	Second Hand Cleaned and 100% working

TR-7850 review

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