TS430S.8 I GOT THIS MOD AT A HAMFEST, TRIED IT, AND IT WORKS.... CUT R52, A 47K 1/8W RESISTOR NEAR PLUG 4 ON PLL UNIT. THIS IS FOR THE KENWOOD TS430S, PROVIDING RECEPTION BELOW 150 KHZ. NOT ALL THAT MUCH DOWN THERE BUT ANYONE INTO VLF STUFF SHOULD LOVE IT. IF YOU'VE GOT ANY QUESTIONS, CONTACT ME BOB, N2CJJ @ BBSENY.NY.USA.NA HAPPY SWLING...