Programming the Retevis RA-25, a bildungsroman – part I

I recently got a Retevis RA-25, a nifty and resourceful little analog rig from Retevis. I won’t discuss the GMRS version (I nearly don’t know what GMRS is) but the HAM version. The hardware may probably be the same. Also, there are some other models that are said to be the same hardware, marketed under … Leggi tutto