Hello, my 7000 is connected to the radio port of a MFJ-993B tuner. Unfortunately, the tune button on the 7000 does not trigger the low power keying of the transmitter. The TUNE message on the display lights up for a moment but then goes out immediatly afterwards. Note that the 993B tunes up well when I manually set low power and RTTY mode and push the PTT. I need your help! Thank you. Marco IU8HXM