Jonathan Naylor wrote: > > > I'm happy to announce that the first full dual-mode repeater using my > software went live yesterday. GB3IN had already been operating dual-mode > by means of fixed time periods for each mode, but with the latest > version of my software, the repeater is now available for both modes > when cold.
Sounds great! Could you point us to a webpage or other information source for your project? > In brief, the mode of operation is as follows. When cold both repeaters > are listening for valid GMSK or CTCSS/1750Hz respectively. Once that has > been received, the active repeater tells the other repeater to go into > Shutdown. This Shutdown state lasts for as long as the active repeater > is receiving/transmitting valid information and for a user definable > period afterwards to stop quick mode flipping. Once that period has > expired, the Shutdown repeater is brought back to life and the system is > available for both modes again. > > The only duplicate hardware in use are two Velleman K8055 boards, one > for each repeater, the USB audio fob and radio are of course shared. Does the code include a sofware GMSK decoder&encoder or does it require a Satoshi board to perform as D-STAR air interface? 73 & R2D2 Erik OH2LAK
