W0ZSW gets update during beta testing as old station is replaced with TS- 590S – Handiham Remote Base HF Stations
KENWOOD TS-590S SERVICE MANUAL Pdf Download | ManualsLib
The cheap Chinese copies of the Kenwood TCXO boards are rubbish, I bought and installed a superb TCXO from Mark Goldberg, W7MLG. The results are fantastic, my TS-590SG is now spot on
How to Setup your Ham Radio Transceiver for Optimal Performance (ft. Kenwood TS-590SG & FT-818ND) - YouTube