TS-870S Specifications

General

Antenna Impedance 50 ohms (nominal)

Current Drain (approx.) 20.5 A (transmit), 2 A (standby)

Dimensions, projections not included (W x H x D) 13 x 4-3/4 x 13-1/8 in. (330 x 120 x334 mm)

Frequency Stability Within ±10 x 10^-6 (±0.5 x 10^-6 with SO-2)

Microphone Impedance 600 ohms

Mode A1A (CW), J3E (SSB), A3E (AMI), F3E (FM), F1D (FSK)

Operating Temperature 14° F - +122° F (-10° C - +50° C)

Power Requirement 13.8 V DC ±15%

Reciever Frequency Range 100 kHz - 30 MHz

Transmitter Frequency Range 160, 80, 40, 30, 20, 17, 15, 12, 10 meter bands

Weight (approx.) 25.35 lbs. (11.5 kg)

Receiver

Audio Output Impedence 8 ohms

Audio Output Power 1.5 W (8 ohms, 10% distortion)

Circuitry Quadruple Conversion Superheterodyne (SSB/CW/AM/FM/FSK)

Intermediate Frequency: 1st IF 73.05 MHz

Intermediate Frequency: 2nd IF 8.83 MHz

Intermediate Frequency: 3rd IF 455 kHz

Intermediate Frequency: 4th IF 11.3 kHz

Notch Filter Attenuation Greater than 40 db

RIT Variable Range ±9.99 kHz

Selectivity: AM (Lo:100; Hi: 4000) 9 kHz (-6 dB), 12 KHz (-60 dB)

Selectivity: CW (Width :200) 200 Hz (-6 dB), 450 Hz (-60 dB)

Selectivity: FM (Width: 14k) 14 kHz (-6 dB), 18 kHz (-60 dB)

Selectivity: FSK (Width: 500) 500 Hz (-6 dB), 1000 Hz (-60 dB)

Selectivity: SSB (Lo:300; Hi: 2600) 2300 Hz (-6 dB), 3300 Hz (-60 dB)

Sensitivity: AM (S+N/N 10 dB) Less than 2 µV (100 ~ 500 kHz), Less than 31.6 µV (500 kHz ~ 1.705 MHz), Less than 2 µV (1.705 ~ 24.5 MHz), Less than 2 µV (24.5 ~ 28 MHz), Less than 2 µV (28 ~ 30 MHz)

Sensitivity: FM (12 dB SINAD) Less than 0.25 µV (28 ~ 30 MHz)

Sensitivity: SSB/CW/FSK (S+N/N 10 dB) Less than 1 µV (100 ~ 500 kHz), Less than 4 µV (500 kHz ~ 1.705 kHz), Less than 0.2 µV (1.705 ~ 24.5 MHz), Less than 0.13 µV (24.5 ~ 28 MHz), Less than 0.13 µV (28 ~ 30 MHz)

Spurious Response: IF Rejection Greater than 80 dB (1.8 ~ 30 MHz)

Spurious Response: Image Ratio Greater than 80 DB (1.8 ~ 30 MHz)

Squelch Sensitivity: FM Less than 0.25 µV (28 ~ 30 MHz)

Squelch Sensitivity: SSB/CW/FSK/AM Less than 2 µV (100 ~ 500 kHz), Less than 20 µV (500 kHz ~ 1.705 MHz), Less than 2 µV (1.705 ~ 28 MHz), Less than 2 µV (28 ~ 30 MHz)

Transmitter

Antenna Tunable Range 20 ohms - 150 ohms

Carrier Suppression Greater than 50 dB

Maximum Frequency Deviation Less than ±5 kHz (wide); Less than ±2.5 kHz (narrow)

Modulation: AM Low-power modulation

Modulation: FM Reactance modulation

Modulation: SSB Balanced modulation

RF Output Power SSB/CW/FM/FSK: 100 W; AM: 25 W

Spurious Response Less than -60 dB

Transmit Frequency Response 300 - 2600 Hz (-6 dB)

Unwanted Sideband Suppression Greater than 50 dB

XIT Variable Range ±9.99 kHz

General
`Antenna Impedance`	`50 ohms (nominal)`
`Current Drain (approx.)`	`20.5 A (transmit), 2 A (standby)`
`Dimensions, projections not included (W x H x D)`	`13 x 4-3/4 x 13-1/8 in. (330 x 120 x334 mm)`
`Frequency Stability`	`Within ±10 x 10^-6 (±0.5 x 10^-6 with SO-2)`
`Microphone Impedance`	`600 ohms`
`Mode`	`A1A (CW), J3E (SSB), A3E (AMI), F3E (FM), F1D (FSK)`
`Operating Temperature`	`14° F - +122° F (-10° C - +50° C)`
`Power Requirement`	`13.8 V DC ±15%`
`Reciever Frequency Range`	`100 kHz - 30 MHz`
`Transmitter Frequency Range`	`160, 80, 40, 30, 20, 17, 15, 12, 10 meter bands`
`Weight (approx.)`	`25.35 lbs. (11.5 kg)`
Receiver
`Audio Output Impedence`	`8 ohms`
`Audio Output Power`	`1.5 W (8 ohms, 10% distortion)`
`Circuitry`	`Quadruple Conversion Superheterodyne (SSB/CW/AM/FM/FSK)`
`Intermediate Frequency: 1st IF`	`73.05 MHz`
`Intermediate Frequency: 2nd IF`	`8.83 MHz`
`Intermediate Frequency: 3rd IF`	`455 kHz`
`Intermediate Frequency: 4th IF`	`11.3 kHz`
`Notch Filter Attenuation`	`Greater than 40 db`
`RIT Variable Range`	`±9.99 kHz`
`Selectivity: AM (Lo:100; Hi: 4000)`	`9 kHz (-6 dB), 12 KHz (-60 dB)`
`Selectivity: CW (Width :200)`	`200 Hz (-6 dB), 450 Hz (-60 dB)`
`Selectivity: FM (Width: 14k)`	`14 kHz (-6 dB), 18 kHz (-60 dB)`
`Selectivity: FSK (Width: 500)`	`500 Hz (-6 dB), 1000 Hz (-60 dB)`
`Selectivity: SSB (Lo:300; Hi: 2600)`	`2300 Hz (-6 dB), 3300 Hz (-60 dB)`
`Sensitivity: AM (S+N/N 10 dB)`	`Less than 2 µV (100 ~ 500 kHz), Less than 31.6 µV (500 kHz ~ 1.705 MHz), Less than 2 µV (1.705 ~ 24.5 MHz), Less than 2 µV (24.5 ~ 28 MHz), Less than 2 µV (28 ~ 30 MHz)`
`Sensitivity: FM (12 dB SINAD)`	`Less than 0.25 µV (28 ~ 30 MHz)`
`Sensitivity: SSB/CW/FSK (S+N/N 10 dB)`	`Less than 1 µV (100 ~ 500 kHz), Less than 4 µV (500 kHz ~ 1.705 kHz), Less than 0.2 µV (1.705 ~ 24.5 MHz), Less than 0.13 µV (24.5 ~ 28 MHz), Less than 0.13 µV (28 ~ 30 MHz)`
`Spurious Response: IF Rejection`	`Greater than 80 dB (1.8 ~ 30 MHz)`
`Spurious Response: Image Ratio`	`Greater than 80 DB (1.8 ~ 30 MHz)`
`Squelch Sensitivity: FM`	`Less than 0.25 µV (28 ~ 30 MHz)`
`Squelch Sensitivity: SSB/CW/FSK/AM`	`Less than 2 µV (100 ~ 500 kHz), Less than 20 µV (500 kHz ~ 1.705 MHz), Less than 2 µV (1.705 ~ 28 MHz), Less than 2 µV (28 ~ 30 MHz)`
Transmitter
`Antenna Tunable Range`	`20 ohms - 150 ohms`
`Carrier Suppression`	`Greater than 50 dB`
`Maximum Frequency Deviation`	`Less than ±5 kHz (wide); Less than ±2.5 kHz (narrow)`
`Modulation: AM`	`Low-power modulation`
`Modulation: FM`	`Reactance modulation`
`Modulation: SSB`	`Balanced modulation`
`RF Output Power`	`SSB/CW/FM/FSK: 100 W; AM: 25 W`
`Spurious Response`	`Less than -60 dB`
`Transmit Frequency Response`	`300 - 2600 Hz (-6 dB)`
`Unwanted Sideband Suppression`	`Greater than 50 dB`
`XIT Variable Range`	`±9.99 kHz`