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Last modified 2022-07-08

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Kenwood / Trio TS-770

A picture of Trio TS-770

SPECIFICATIONS

GENERAL
Type:Amateur VHF/UHF transceiver
Frequency range: TX: 144-146 / 430-440 MHz
RX: 144-146 / 430-440 MHz
Tuning steps:20 / 200 Hz
Frequency stability: 1 KHz during the first hour after one minute warmup
Within 150 Hz during any 30 minute period thereafter
Mode:FM / SSB / CW
Channels / memory management: 8 regular
RAM storage with optional battery backup
Repeater shift / offset:No dedicated. Use VFO A/B split instead
Power supply:Mains: 220 VAC
or 12-16 VDC
Current drain / power consumption:RX: 1.5 A @ 13.8 VDC (No signal)
TX: Max 6 A @ 13.8 VDC
Antenna impedance / connector:50 ohm / Two SO-239
Dimensions (W*H*D):290*124*320 mm (11.42*4.88*12.6")
Weight:11 Kg (24.2 lb)
Other features:1750 Hz repeater tone. VOX. NB. RIT.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 21.6 MHz
2nd IF: 8.83 MHz (455 KHz for 2 m FM)
Sensitivity: FM: 1 uV (30 dB S+N/N)
SSB/CW: 0.25 uV (10 dB S+N/N)
Selectivity: FM: 12 KHz (-6 dB), 24 KHz (-60 dB)
SSB/CW: 2.4 KHz (-6 dB), 4.8 KHz (-60 dB)
Image rejection:1st IF: 60 dB
2nd IF: 50 dB
AF output power / speaker:2.5 W at 10% distortion / 4 ohm
External speaker connector:3.5 mm, 4-8 ohm




TRANSMITTER SECTION
RF output power:

HighLow
2 m:10 W1 W
70 cm:10 W1 W
Modulation system: FM: Variable reactance frequency shift
SSB: Balanced modulation
FM deviation (Factory set):5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:500-600 ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1979-198x (Discontinued)
Additional info:
Related documents:Service manual (18.5 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
BU-1
HC-2
HS-4
HS-5
MC-20
MC-30S
MC-50
SP-70
External memory backup battery case
Ham clock, 24hr system
Communication headphones
High class communication headphones
Miniature dynamic hand microphone, 500 ohm
Dynamic hand microphone with noise cancelling, 500 ohm
Dynamic desk microphone, 50 kohm or 600 ohm switchable
External speaker