I'm putting up some 4 squares and need 40M and 80M phasing controllers, COMTEK ACB 40 and ACB 80 Perhaps a 30M unit as well for the future. Anybody have any to sell? Also, I have been offered a 40M Comtek that is an "older" style. Not sure if there was any functional difference between old and new. Can anyone comment? -- 73, Dan W7RF