I will give it a go thanks. I was on 7.036 because I was aiming for a group C frequency of 1600/1800Hz with the Tiny Track4?. I did check a waterfall on an FT2000 and it appears the FSK tones being transmitted are on 1600/1800Hz with the dial set to 7.036 and LSB on the 2000. cheers Mick VK2CMP