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Last modified 2023-12-28

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Kenwood TS-680S

A picture of Kenwood TS-680S

SPECIFICATIONS

GENERAL
Type:Amateur HF/VHF transceiver
Frequency range: TX: 10-160 m + WARC / 6 m
RX: 0.5-30 / 50-54 MHz
Tuning steps:10 / 100 Hz
9 / 10 KHz
1 MHz
Frequency stability:Better than ±10 ppm @ -10 to +50°C (14 to 122°F)
Mode:AM / FM / SSB / CW
Channels / memory management: 10 regular
10 split
10 band marker
1 scan edge pair
RAM storage with lithium battery backup
Repeater shift / offset:No dedicated. Use VFO A/B split or memory split instead
Power supply:12-16 VDC
Current drain / power consumption:RX: 1.5 A (No signal)
TX: Max 20 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):281*107*305 mm (11.06*4.21*12")
Weight:6.1 Kg (13.45 lb)
Other features:NB1/NB2. IF shift. Attenuator. Speech processor.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 40.055 MHz
2nd IF: 455 KHz
Sensitivity: AM (10 dB S/N)
0.5-1.6 MHz: 39.8 uV
1.6-21.5 MHz: 2.5 uV
21.5-30 MHz: 1.78 uV
50-54 MHz: 1.58 uV
FM (12 dB SINAD)
21.5-30 MHz: 0.18 uV
50-54 MHz: 0.18 uV
SSB/CW (10 dB S+N/N)
0.5-1.6 MHz: 4 uV
1.6-21.5 MHz: 0.25 uV
21.5-30 MHz: 0.18 uV
50-54 MHz: 0.18 uV
Selectivity: AM
6 KHz (-6 dB)
18 KHz (-50 dB)
FM
12 KHz (-6 dB)
25 KHz (-50 dB)
SSB/CW
2.2 KHz (-6 dB)
4.4 KHz (-60 dB)
Image rejection:-50 dB
AF output power / speaker:1.5 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8-16 ohm




TRANSMITTER SECTION
RF output power:

HF6 m
AM:40 W4 W
FM:50 W10 W
SSB (PEP):100 W10 W
CW (DC):100 W10 W
Modulation system:AM: Low level
FM: Reactance
SSB: Balanced
Max FM deviation (Factory set):±5 KHz
Spurious emissions:HF: Better than -40 dB
6 m: Better than -60 dB
Microphone impedance / connector:500 ohm to 50 Kohm / 8-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1989-199x (Discontinued)
Additional info:New price 1989 in Sweden: SEK 11625:-
Related documents: User manual (42 MB)
Schematic (5.6 MB)
Modifications and fixes:
Reviews:
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Antenna tuner, 10-80 m
Automatic antenna tuner, 10-160 m
Communications headphones, 8 ohms
Communications headphones, 12.5 ohms
Micro headphones, 16 ohms
Interface kit
RS-232C interface
Low pass filter
5-band helical HF mobile antenna
Mobile mount
Hand microphone, dynamic with up/down switches
Hand microphone with up/down switches and 5 minute timer
Desk microphone
Desk microphone, electret condenser type
Desk microphone, electret condenser type with filters and level meter
Phone patch with VU-meter
DC power cable
Heavy duty power supply, 13.8 VDC, 20 A. Built-in cooling fan
Regulated power supply, 13.8 VDC, 20 A (intermittent)
Station monitor
External mobile speaker, 4 ohms
External mobile speaker, 8 ohms
External speaker
Tone encoder unit. 38 tones selectable by dip-switches
Bumper mount for MA-5
CW filter, 500 Hz
CW filter, 500 Hz