"My problem with version 251 is it will not hold VFOs and bounce back and forth even when radio is in the lock mode. You may TX one minute on VFO A and next time TX on VFO B, wrong freq."
This is easy. The "Dual Watch" function is doing that. The radio switches automatically to whichever line, A or B, has radio traffic, or even just noise that breaks squelch. It drive me nuts at first, too. You need to turn this function off.
Set Menu 7 to Off, like this.
Press Menu, then 7.
Press Menu, then 0.
Press Menu (the radio says "Confirm")
Press Exit.
Or, if you want to do this with CHIRP:
Below where it says Memories on the left side, click Settings, Advanced Settings, uncheck Dual Watch, then upload back to the radio.
Paul - AE5JU
In God we trust. - The United States National Motto. Link to Paul's articles from Main page of "Saxgourmet": http://www.saxgourmet.com%C2%A0Paul Coats is the sole US importer of SaxRax products from: http://www.saxrax.com%C2%A0For SaxRax products, email Paul at saxraxus@saxrax.com