In view of what you said, Snip "When Antenna 2 is selected without any antenna connected to it, I push to tune button to try to tune it on 7Mhz band three times. Now there is not any output on 7 Mhz and only 3 watts output on 10 Mhz." if this is what you meant, then by all means hook an antenna to position Antenna2 and see what happens. 73, Joe, aa4nn