Just a note about my H-6. It spent a few months with the front panel lights looking like a Christmas Tree. Very nice but not allowing me to communicate. What I did found out was the mains plug into the H-6 was slightly angled, i.e; not straight into the socket. So it looked like this intermittent connection was causing noise through the H-6 and causing all kinds of problems with it. The moral of this story is check your plugs n sockets first. It's working fine and comms is back to normal.