[Yaesu] ft990 comm problem

[VR2BrettGraham]

Yes, beware of Yaesu - some radios are DTE, some DCE & you will often
find the serial connector to be of the wrong sex - let's just say that Yaesu
uses D*E.  ;^)

Sorry to hear the 990 doesn't use a normal line driver - I've seen them do
some strange things.  As the driver is merely a transistor, it'll be hard for
that to muck it up.

One last suggestion - may have been done already - do a complete reset of
the rig.

GL!

73, VR2BrettGraham