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Digital signal processing (DSP) at the IF stage is now a reality with the Kenwood TS-870S HF transceiver. DSP technology uses a dedicated computer chip to convert analog waveforms into digital information in real-time, providing the opportunity to filter and enhance the quality of the signal before it is reconverted into analog form for the human ear. This design uses two state-of-the-art 24-bit 20 MIPS DSP chips that provide for receiving enhancements to bring signals out of the noise. Imagine over 100dB out of pass band attenuation with virtually no signal loss by the DSP filter! Imagine CW bandwidth adjustable to 50 Hz. Advanced speech processing with transmit equalization that will make you the first in pile-ups! This radio also features RIT and XIT and a multifunction meter. Plus complete computer operation and control of the TS-870S is possible with supplied Windows™ software and a built-in RS-232C port [DB9].

General characteristics

HAM bands
160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m 
Frequency stability
≤ 10 p.p.m.
Tuning steps
Continuous
Memories
100 channels in 1 bank(s)

Receiver

RX-range
0.1-30 MHz
Modulations
AM   FM   CW   USB   LSB   FSK  
Sensitivity
SSB / CW / FSK
100-500 kHz: ≤ 1 µV
0.5-1.62 MHz: ≤ 4 µV
1.62-24.5 MHz: ≤ 0.2 µV
24.5-30 MHz: ≤ 0.13 µV
AM
100-500 kHz: ≤ 2 µV
0.5-1.62 MHz: ≤ 31.6 µV
1.62-24.5 MHz: ≤ 2 µV
24.5-30 MHz: ≤ 2 µV
FM
28-30 MHz: ≤ 0.25 µV
Selectivity
SSB: 2.3 kHz @ -6 dB / 3.3 kHz @ -60 dB
CW: 200 Hz @ -6 dB / 450 Hz @ -60 dB
FSK: 500 Hz @ -6 dB / 1000 Hz @ -60 dB
AM: 9 kHz @ -6 dB / 12 kHz @ -60 dB
FM: 14 kHz @ -6 dB / 18 kHz @ -60 dB
Filters
SSB: 300 / 2600 Hz CW: 200 Hz FSK: 500 Hz AM: 100 / 4000 Hz FM: 14 kHz
Receiver system
Quadruple conversion superheterodyne
IF-frequencies
1st: 73.05 MHz
2nd: 8.83 MHz
3rd: 455 kHz
4th: 11.3 kHz
Image rejection
≥ 80 dB
Audio output
>= 1.5 W @ 1-% THD into 8 Ohms

Transmitter

TX-range
10-160 m + WARC
Modulations
AM   FM   CW   USB   LSB   FSK  
RF-output
Max 100 W (AM 25 W)

Connections

Antenna
SO-239
Impedance
50Ω
Other
-

Electrical

Power requirements
13.8V DC +/- 15%
Current drain RX
2 A
TX
20.5 A

Physical

Dimensions (w×h×d)
330 × 120 × 334 mm (12.99 × 4.72 × 13.15 in)
Weight
11.50 kg (25.4 lbs)
Form factor
Base Station
Manufactured
Between 1995 and 19xx

Other features

Usage
Amateur / Ham radio operators
Features + options
DSP
Built-in auto AT: 20-150 ohms
Accessories
-
RigReference ID
3513
MPN
KENWOOD-TS-000870S

Manuals, diagrams and brochures

Kenwood TS-870S In Depth Manual PDF - Unknown size, submitted by RigReference
Kenwood TS-870S Service Manual PDF - Unknown size, submitted by RigReference
Kenwood TS-870S User Manual PDF - Unknown size, submitted by RigReference
Kenwood TS-870S User Manual Dutch PDF - Unknown size, submitted by RigReference
Kenwood TS-870 Surge Diodes PLAIN - 4.5 kB, submitted by Phil Sisson
Kewoon TS-870S EPROM Replacement PLAIN - 1.6 kB, submitted by Phil Sisson
 
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Reviews & stories

Rating Title Submitted
My best rig 5 years ago by iz2uqe

New and second-hand prices

Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used Kenwood TS-870S. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

Based on historic data, today's second-hand price of the Kenwood TS-870S is around:

  • EUR 424.00

Price History Chart

These estimates are based on the following prices:

Year Historic price Condition Submitted by
2012 EUR 700.00 Used / Good iz2uqe
2012 EUR 700.00 Used / Good iz2uqe

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