Ok Doc I am thinking this is only the new ones it works on but what is considered new? I have no clue but this indeed worked on mine it transmitted on everything then I was like $h!+ do I have to master reset to put back to stock? I sure as hell didnt want to reprogram everything then I found I could reset the internal menu back to factory specs without losing everything Ill give the open TX mod then the reversal I used.
TX Mod FT-2800/M
Hold LOW+D/MR and then press the power on. On the screen you should see "A2" on the readout
(SET MODE RESETTING)
To reset the set (Menu) mode settings to there factory defaults, while leaving other settings unchanged
1. Turn off radio
2. Press and hold in the [REV(DW)], [LOW(A/N)] AND [D/MR(MW)] keys while turning the radio on The "SETRST" notion will appear on the display.
3. Press the [D/MR(MW)] key momentarily to reset the set (Menu) mode settings to their factory defaults (press anyother key to cancel the reset procedure).