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     Peter Miles
     Northam, Western Australia
     QRZ Page: VK6YSF

 

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KENWOOD TS-450S

The TS-450S covers 1.8 - 30 MHz all-mode with 100 watts of r.f. output.

 

Below are the detailed technical specifications and features for the Kenwood TS-450S 

 

General Specification

Details

Type

HF All-mode Transceiver

Frequency Coverage (TX)

1.8–30 MHz (includes WARC bands)

Frequency Coverage (RX)

100 kHz – 30 MHz

Modes

USB, LSB, CW, AM, FSK

Emission Designators

A3E, J3E, F1B, A1A

Antenna Impedance

50 ohms, unbalanced

Power Supply

13.8 VDC ±15% (negative ground)

Current Drain

RX: 1.5 A max, TX: 20 A max

Dimensions (W × H × D)

270 × 96 × 318 mm (10.6 × 3.8 × 12.5 in)

Weight

Approx. 6.6 kg (14.6 lbs)

 

 

Transmitter Specification

Details

Output Power

100 W (SSB, CW, FSK); 40 W (AM carrier)

Modulation Types

Balanced modulator (SSB), Low-level (AM)

Harmonic Suppression

>50 dB

Carrier Suppression

>40 dB

SSB Frequency Response

300–2700 Hz

Microphone Impedance

600 ohms

Keying

Semi/Full break-in CW; External key jack

Speech Processing

Built-in

 

 

Reciever Specification

Details

Receiver Type

Triple conversion superheterodyne

1st IF

73.05 MHz

2nd IF

8.83 MHz

3rd IF

455 kHz

Sensitivity

SSB/CW: <0.2 µV (10 dB S+N/N), AM: <2 µV

Selectivity (SSB)

2.4 kHz (–6 dB), >4.0 kHz (–60 dB)

Selectivity (CW)

0.5 kHz (with optional filter YK-88C)

Selectivity (AM)

6.0 kHz (–6 dB), >12 kHz (–50 dB)

Audio Output

1.5 W into 8 ohms @ 10% THD

RIT/XIT

±9.999 kHz

IF Shift

Built-in

AGC

Fast/Slow/Off

Noise Blanker

Built-in

 

  

 

Features

  • 100 Memory Channels (with frequency and mode)

  • CW Full & Semi Break-in Operation

  • Built-in Antenna Tuner (in TS-450SAT model)

  • RIT/XIT (Receiver/Transmitter Incremental Tuning)

  • IF Shift for interference reduction

  • RF Gain and Squelch controls

  • Dual VFOs (A/B)

  • Wide/Narrow filter support (optional)

  • Computer Control (RS-232 with optional IF-232C interface)

  • CW Sidetone & Tone Control

  • Selectable AGC speeds

  • Optional narrow filters for CW and SSB (e.g. YK-88SN, YK-88C)

 

Rear Panel Connectors

  • SO-239 antenna connector

  • 13-pin DIN accessory jack (ACC2)

  • 8-pin DIN for AT or linear amp control

  • RCA key jack (CW)

  • RS-232 (optional IF-232C interface for CAT control)

  • External speaker jack (3.5 mm)

  • DC power input (6-pin Molex)

 

Repairs, maintenance and related projects

Kenwood TS-450S audio repair. TS-450S Audio Repair  May 2022

 

 

TOP OF PAGE

Page initiated 26 June 2025

Page last revised 05 November, 2025

 
 

   Space Weather

   https://www.swpc.noaa.gov/

    

   Notice Board

VK6YSF JS8Call and Olivia 8/250 operations.

Current activity is generally focused - though not restricted to - JS8Call operations on the 20m, 30m, and 40m bands.

Currently there is a particular emphasis on JS8Call on the 10 and 12 m band between 00:00 and 12:00 Z, often extending beyond this period.

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 .  

Feel free to contact me to discuss or arrange a schedule for a contact.

Post date: 7 December 2025

 

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.