Peter Miles
Northam, Western Australia QRZ Page: VK6YSF
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TS-430S RECEIVER REPAIR
Kenwood
TS-430S Low Receiver Sensitivity Repair. October 2021
Overview of non-Kenwood
TS-430S Low Receiver Sensitivity Repair.
Low or intermittent reception on the TS-430S radio may be caused by poor contact on one or more of the LPF (Low Pass Filter) relays. In most cases, the following procedure can correct this problem without needing to clean or replace the relays. The procedure involves passing a relatively high current (about 500mA) through the contacts to burn off any oxidation or contamination and clean the contacts. This procedure is based on Kenwood TS-430S Service Bulletin - ASB-0902: INTERMITTENT RX.
2
x 56ohm 5W Ceramic resistors wired in parallel.
Apply a 13.8VDC power supply to the antenna terminal through a 28-ohm, 10W resistor for approximately 1 minute while pressing and holding the 'UP' band-switch of the TS-430A (make sure the 1 MHz switch is ON). This will cycle through all the filter relays and remove any oxidation or contamination from the relay contacts. If using the same power supply, ensure that the positive terminal is connected to the
centre of the antenna connector.
If
using the same power supply ensure the positive of the supply is
connected to the centre of the antenna connector.
Refer: KENWOOD, TS-430S
SERVICE BULLETIN - ASB-0902 INTERMITTENT RX
Video
ofnon-invasive
Kenwood
TS-430S low receiver sensitivity Repair
Establishment of a Beam Wireless Service, providing the longest and fastest telegraphic communications in the world. The first such communication between Australia and England was in January 1927.
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
Repeaters Page Updated
- Expanded and refreshed information on VHF and UHF repeaters across Western Australia's Central Coast, Perth, the Avon Valley, and the Peel region. New AllStar Link information has also been added, including linked repeater details and
gateway information across the State.
