Ribbit Digital Text VHF/UHF Ham Radio Tactical Communications

[Richard VE3OZW]

I like it but unfortunately only available for Android phones but they have a beta for iOS.  Once it comes out, I will try it out.  It would work on the repeater the same as simplex.  It is just a burst of data that should transition the same through the repeater and be picked up on the other side.  When it comes out for iOS, we will give it a try through the repeater.