The PTT cable is enough, I use one for my 7610 and 7300 (when I have it set up). I have a data cable between the amp and the transceiver as well in which case you don't need the PTT. 40 watts is usually the most I use. I think you can go to 60. Depending on the band you can get 1200 out of the LA-1K but I don't like to do that. Are you going to have 220 VAC to power it?
--
73,
Jerry
Jerry Raia