Kenwood Ts-590sg Base Shortwave Station Fixed Station Amateur Radio Ham Radio Emergency Communication Dhl Free Shipping - Instrument Parts & Accessories - AliExpress
Kenwood TS-590SG Mini-Manual by Nifty Accessories: Amazon.com: Books
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