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We upgraded the club’s Digital Voice (DV) repeater on Saturday, Nov 20.? It was off the air from about noon to 4pm.? See details attached to this note.

The objective was to install a repeater capable of repeating not only D-STAR mode, but other DV modes such as DMR.? The repeater remains on 145.0 +2.500.? D-Star mode on the new repeater is working well, but please contact me at jim@... if you have questions or issues with the new repeater.?

We are using a system called Multi-Mode, invented and software written by Jonathan Naylor, G4KLX. For those at Pacificon 2018, you may have attended Jonathan's presentation on the MMDVM -- Multi Mode Digital Voice Modem -- and associated software.

We are also setting up a new DV forum on groups.io – more on that in upcoming posts.?

We are proud of how our D-STAR repeater has been actively used, but analyzing the traffic, we realized this wonderful resource at South Peak on Mount Diablo could benefit even more members and hams in the area.? So we have replaced our hard-working ICOM D-STAR repeater with this upgraded system that can listen for more than one digital voice mode.? Our initial focus will of course be on D-STAR, and DMR as well, and we are also testing how Fusion/C4FM works on this repeater.

What it means for you, if you are using DV modes like D-STAR or DMR now, or were thinking of getting into one of those DV modes, is that you now have more than one South Peak DV mode choices.? Also, you’ll notice the Dashboard format is different.? You can still use the previous Dashboard web address, but the new one is .

It also means you need to make one small change to your DV operating habits – If your radio (for example D-STAR radio) is quiet and you are about to hit PTT, please glance at your radio to see if the frequency is already busy.? That would mean a different DV mode is currently using our DV repeater.? There are many such Multi Mode repeaters now on the air around the world, and their users have quickly adapted to making this small radio check before transmitting.

We’ll be posting more information in the coming days, including how to program your DMR radio to use the repeater.? Of course, D-STAR users don’t need to make any changes, other than the above check that the channel is not busy.

???? Jim – K6JM

???? W6CX DV Gateway Admin

PS? Details -- Trevor Hall and I made the following changes on Saturday:

·?????? Removed the existing ICOM D-STAR controller and 2 meter repeater.

·?????? Installed a new repeater consisting of a pair of Motorola CDM1250 radios, controlled by a ZUM Radio Multi Mode Digital Voice Modem (MMDVM) board designed by Jim McGlaughlin? KI6ZUM.? (Jim has also made several presentations on MMDVM at Pacificon.)? The modem is attached to a Raspberry Pi 3B+.? The Pi is loaded with the Pi-Star image which contains the G4KLX programs plus a Dashboard and software for administrators to control the repeater.

PPS I have also crossed posted to the NorCal DMR group in case those users are interested in these developments.

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