Hi Steve, Trust you are well.
I think the threads where people were connecting a D-Star radio to an analogue radio or repeater (or visa versa) have been discussed before and been met with quite a wall of opposition when they tried. Its a shame someone wouldn't come up with a 'caller ID' type system for analogue, like DCS signalling, so that the FM radios could indeed TX an ID and maybe a Your:/RPT1/2 etc at the beginning of each TX, then the interoperability would not be a problem. Decoding wouldn't be that much more difficult either at the RTX. As far as I can see or know, Andy's repeater doesn't buffer or 'hold' any data, it is purely passed directly and almost instantaneously into the TX from the RX, after the comparator circuit that helps smooth off the 0's and 1's. Maybe the Satoshi adaptor does something to delay the signal now, I have noticed that ever since it was added, you sometimes get your own message back and 400mS of your own audio repeated back to you, so the system works really fast, zero reports of audio being chopped or lost at any stage, even before the adaptor was added. Again, you have to think FM, do you ever get chopped audio when an analogue repeater fires up? (Not including the CTCSS sense.) I'm guessing that the FEC helps in some respect with D-Star, but then again, there IS a delay between TX and RX, even in simplex QSO's. All interesting stuff, I for one will be trying a mod on some MX290 (later non xtal) radios when I get the chance. 73 De Neil, G7EBY. --- In [email protected], "Steven Samuel Bosshard (NU5D)" <bossh...@...> wrote: > > Looks like the thread is migrating from connecting a DSTAR radio to an > FM radio or repeater, into building a non-Icom DSTAR repeater. > > It doesn't take much 'magic' to run dstar through a PMR or LMR here in > the Colonies, radio. BUT, > > You loose the DSTAR ID packets and such generated by the repeater - > remember you can key your radio and have the repeater automatically > place it's call sign in your radio. You loose some of this function. > Also you loose the front end of transmissions because of the time it > takes for some PMR radios to start sending, unless you leave the TX > turned on or buffer the data. > > I made a couple of UHF GE Phoenix SX PMR radios work as a repeater. I > believe PY2JF used a Spectrum repeater with no mods and was able to pass > dstar. > > Great to see some experimentation taking place. 73, steve nu5d > > > Neil wrote: > > Hi Tony, > > > > I spoke to Andy SZM earlier, he was quite pleased that others were > > interested in modifying PMR gear, >
