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     Northam, Western Australia
     QRZ Page: VK6YSF

 

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KENWOOD TS-430S

Kenwood TS-430S, All mode HF transceiver is popular for its reliability, simplicity, and serviceability.

 

Below are the detailed technical specifications and features for the Kenwood TS-430S 

 

General Specification

Details

Receiver Type

Hybrid: Direct Sampling (HF), Superhet Tuner (VHF)

Frequency Coverage

0.5–31 MHz (HF), 60–260 MHz (VHF)

Intermediate Frequencies

Direct conversion (HF), RFFC2072 tuner IF (VHF)

Tuning Steps

1 Hz (software defined)

Selectivity

Software defined (10 Hz – 768 kHz BW)

Sensitivity (HF)

-135 dBm ≈ 0.056 µV (typical, 500 Hz BW)

Sensitivity (VHF)

-125 dBm ≈ 0.18 µV (typical, 500 Hz BW)

Dynamic Range (HF)

>110 dB

Dynamic Range (VHF)

~95 dB

Image Rejection

>80 dB (HF)

Preselector / Filtering

Automatic tracking filters (HF & VHF)

LO Phase Noise

< –135 dBc/Hz @ 10 kHz offset

Noise Figure (HF)

~1 dB

Noise Figure (VHF)

~3 dB

AGC

Digital AGC (software-controlled)

Squelch

Software-controlled

Audio Output

IQ stream only via USB

Interface

USB 2.0 Micro-B

Power Supply

USB powered (~200 mA)

Antenna Connector

SMA female (50 ohm)

Form Factor

49 × 29 × 10 mm, ~20 g

 

 

Transmitter Specification

Details

Output Power

Max 100 W (SSB/CW/FSK)

40 W AM (carrier)

Final Amplifier

2 × 2SC2290 bipolar transistors

Spurious Emissions

≥ 50 dB below carrier

Microphone Impedance

600 ohms (standard 8-pin)

Duty Cycle

100% at rated power with good ventilation

Carrier Suppression

> 40 dB

Audio Response

400–2600 Hz (SSB), 300–2300 Hz (AM)

 

 

Receiver Specification

Details

Receiver Type

Dual conversion superheterodyne

1st IF

8.83 MHz

2nd IF

455 kHz

Sensitivity (12 dB SINAD)

~0.25 µV ≈ –121 dBm (SSB/CW)

1.0 µV ≈ –106 dBm (AM)

Selectivity

SSB: 2.4 kHz @ –6 dB (standard filter)

AM: 6 kHz typical

Image Rejection

≥ 60 dB

IF Rejection

≥ 70 dB

Audio Output

1.5 W into 8 ohms (rear jack), 4 W max

AGC

Fast, slow, off selectable

Noise Blanker

Yes (adjustable threshold)

Preamp / Attenuator

Yes: +10 dB preamp and –20 dB attenuator

Notch Filter

Manual, analog

 

 

.

 

 

Features

 

  • Dual VFOs (A/B), Allows split operation or A/B channel recall

  • 10 Memory Channels

  • Digital Frequency Display, Resolution: 100 Hz or 10 Hz steps

  • Noise Blanker
    Reduces ignition and pulse-type noise
    Front-panel adjustable threshold

  • AGC (Automatic Gain Control)
    • Selectable: fast, slow, off

  • Manual Notch Filter control to reduce heterodynes

 

  

 Rear Panel Connectors

  • ANT: Primary RF connection. Use 50-ohm coax to an external HF antenna system (e.g. dipole, vertical, etc.).

  • DRV (Drive Out): Delivers a low-level RF signal (useful for transverters or driver stages). Not commonly used by most operators.

  • SEND: Grounds on TX. Use to key external linear amplifiers.

  • ACC Jacks: Support integration with audio interfaces, digital mode modems (e.g. AFSK, RTTY, PSK31), and other accessories.

  • EXT SPKR: Rear panel speaker disables internal speaker when in use.

  • KEY Jack: Direct CW key input; supports straight key or keyer paddle depending on menu setup.

 

Repairs, maintenance and related projects

Kenwood TS-430S Repair and Restoration

TS-430S Repair

November 2018

Kenwood TS-430S non-invasive low receiver sensitivity repair.

TS-430s receiver sensitivity repair

October 2021

 

 

 

For further technical information see: http://www.g3ynh.info/commercial/TS430.html

 

TOP OF PAGE

Page initiated 01 June 2019

Page last revised 05 November, 2025

 
 

   Space Weather

   https://www.swpc.noaa.gov/

    

Nikola Tesla, born on 10 July 1856, was one of 

history's most influential inventors.

   Notice Board

VK6YSF JS8Call and Olivia 8/250 operations.

Current activity is generally focused - though not restricted to - JS8Call operations on the 30m, and 40m bands.

Olivia 8/250 is used occasionally on the 20m band.

Proposed band and mode activity is often communicated on HamSpots: https://hamspots.net/js8/ or my profile on 

X: https://x.com/vk6ysf97230 .  

Post date: 5 July 2026

 

Local Repeaters

The Local Repeaters page has been updated with expanded and refreshed information on VHF and UHF repeaters across Western Australia's Central Coast, Perth, the Avon Valley, and the Peel region.

See: https://vk6ysf.com/local_repeaters.htm 

Post date: 5 July 2026

 

MARMOTSat

An exciting upcoming amateur radio CubeSat

Proposed launch date: 7 July 2026

Expected payload includes:

145.875 MHz – AX.25 packet digipeater
436.125 MHz – Telemetry & command (digital)
29.410 MHz – CW telemetry beacon, DVB-S2 experiments.

https://marmotsat.ca
https://www.propagationlab.ca/satellite/

Post date: 5 July 2026

Western Australian SSTV net 

Popular Western Australian SSTV net for both digital and anolog SSTV.

Generally found at 7214.0kHz LSB every afternoon from 08:00 UTC (4:00pm WST)

For more details: https://www.wasstv.net/wasstv.net/index.html

Post date: 8 December 2025

 

VK6MJM LF (136kHz) and MF (474kHz) Beacon

VK6MJM is a  LF/MF station located in Manjimup, Western Australia.

Common Mode: FST4W 300 (Similar to WSPR)  

Note: other modes and sub-modes may be used.

Station details were presented by Peter Hall (VK6HP) at PerthTech 2024.Presentation PDF: Peter Hall VK6HP at PerthTech

QRZ Page: VK6MJM on QRZ.com

Post date: 10 March 2025

 

 

 
 

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Amateur Radio Station VK6YSF - Promoting amateur radio communication and experimentation.