Thanks to our generous alumni, Micheal Salem, N5MS, the OU Radio Club now has use of a DMR repeater! DMR, Digital Mobile Radio, is an ETSI standard that encodes voice into a 6.25 kHz wide digital stream. It then puts two streams into a 12.5 kHz channel using two TDMA time slots. The repeater itself is connected via the internet to a network of other repeaters, worldwide, meaning that from your DMR HT, you can talk to other hams pretty much anywhere the DMR network goes. I hear some of you saying, "Gee, Peter, isn't that like the D-STAR repeater we already have?" "Yes, yes it is. Almost exactly," I answer. D-STAR is a JARL standard that uses a slightly different vocoder and doesn't use TDMA but otherwise works the same way (connection over the internet to other hams in other countries). DMR is a commercial standard, so some stuff has been "bent" by enterprising hams to do things more to our liking. And no, D-STAR and DMR don't work well together. Yet. The upside is that you can get a DMR radio for <$150. So there's that. :-) Feel free to tune in to 443.825 MHz, but unless you have a DMR radio (or are clever with an SDR) you'll only hear digital data. More on DMR: https://en.wikipedia.org/wiki/Digital_mobile_radio http://www.dmr-marc.net/ http://www.ebay.com/itm/TYT-Tytera-MD-380-UHF-Analog-Digital-DMR-Radio-USB-cable-Software-US-Seller-/301801103374 ? If you see Mike or hear him on the air, thank him! 73, Peter -- Peter Laws / N5UWY National Weather Center / Network Operations Center University of Oklahoma Information Technology [log in to unmask] College of Architecture, Regional and City Planning, MRCP '16 ------------------------------------------------------------------ Feedback? Contact my director, Ken Kurz, [log in to unmask] Thank you!