Replacement of RL1 LZN4 Omron relay in TS-830S

Here’s yet another approach to solving an issues with the hard to find LZN4 Omron relay on the AVR Board in Kenwood TS-830S transceiver /part # S51-4401-05/. It’s a 4PDT relay with 12VDC coil, switching various voltages. After few decades and frequent transmit/receive actions, the contacts of this relay become intermittent, resulting in poor receive…

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A Cheap VHF UHF Dipole

Here’s my variation on dual band dipole from drawings found on the web. Mine is made from stainless welding wire with 1.5mm diameter. The fasteners are M4 A2 /stainless/ machine screws, nuts, and washers. After adjustments, the total length  for the 2-meter band is approx. 960mm in total. The spacing between two halves is about…

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Kenwood TS-830S shaft couplings replacement

Here’s my approach to problem with the cracked plastic shaft couplings in the Kenwood TS-830S hybrid transceiver. As you may already know, after 30+ years, these couplings tend to crack and almost no adjustments could be made to the TS-830S. One of the main reasons for the cracking of these couplings is overtightening the set…

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