John's Meanderings

NW7DR – A quick update

Last week a few changes and improvements were made to NW7DR B, my Kenwood TKR-820 modified for compatibility with D-STAR. With the assistance of my son, James – KC7OSO, the antenna was moved…

DCC Presentation

Here is a pdf file of the slides I used for the development presentation at DCC on Friday: D-STAR for the Technically Curious Several of the open source packages mentioned in the presentation…

Converting the Kenwood TKR-820 to use with D-STAR

Converting the Kenwood TKR-820 for use with D-STAR is almost trivial. Here is what you need to do this project. First you need a TKR-820 (or 720 for VHF) complete with duplexer, antenna,…

Authentication on RF D-STAR Protocol

There is nothing in the protocol to support authentication, it only provides identification.

NW7DR – The Homebrew D-STAR Compatible Repeater

have never had an interest in owning my own repeater, but I got a hankering to build up a repeater to support my experimentation.

QSO Radio Show Interview – D-STAR

Several weeks back, I did an interview about D-STAR with Ted Randall on his QSO Radio Show.  It first aired on shortwave station WBCQ on 10 December 2009. It is available as a…

Built A D-STAR Compatible Repeater

Intrigued by the efforts of Jonathan Naylor, G4KLX, I decided I would try building a little, experimental D-STAR compatible repeater. Jonathan has created a piece of software to act as a controller for…

Repeater Time

Well, I’ve provisioned a couple of D-STAR gateways, and have helped with some Icom repeater work, but I have never built a repeater from the ground up.  I have hit a milestone in…

So This Guy Contacts Me About an Article…

A couple of months back I was contacted about doing an interview for an article on Amateur (Ham) Radio.  Today it was published in Computerworld. I was honored to be asked to be interviewed…

ID Translation

While discussing the issues surrounding interconnection of non-DSTAR (analog – VOIP/ROIP) systems to D-STAR, I have had several people say “but the ID cannot be translated” between systems. This has been brought up…