He replaced the display so you’ll lose some display functions from the stock display like NB, mic gain, RF gain etc which would be the downside but you’ll gain freeband and could use it for 10 meters etc. It will display mode on the new display. Not sure if I’d do it on a 980 but pretty cool.
Check out his post on FB as it has a video of it in action.
Check out his post on FB as it has a video of it in action.