So, I updated the packet map :
Yes, I still do packet radio! 😉
The HCCA Repeater N8OUZ in Traverse City, MI (442.2875) is a MotoTrbo repeater on the DMR-MARC network.
As such, this announcement applies to users of the system, which serves to announce access to new talkgroups accessible to dv4mini users, as well as users of other similar technologies. Here is the text from the official announcement”
DMR-MARC is pleased to announce a partnership with the DMRPlus network that will enable DV4mini USB dongles from Wireless Holding, to access the DMR-MARC network.
Today, we are launching three new DMR-MARC talkgroups: talkgroup 133 (DMRPlus USA), talkgroup 143 (DMRPlus UK), and talkgroup 153 (DMRPlus South Pacific), which will allow interconnection between the DMR-MARC and DMRPlus networks using timeslot 1. In the coming months, we are also planning to launch additional interconnected talkgroups, including three German language talkgroups, a French language talkgroup, and a Spanish language talkgroup as well.
These new talkgroups are currently set up as “on-demand”, which can be enabled using the PTT and have a 10-minute inactivity timeout on our eight core DMR-MARC bridges. We will begin rolling out these talkgroups to our core DMR-MARC repeaters while we evaluate the loading on our gateway that connects the DMR-MARC and DMRPlus networks. If we determine the loading is acceptable, we will then roll these new talkgroups out to all of our other bridges for wider distribution. Please note that there is no plan at this time to roll out these new talkgroups to other DMR networks outside of the core DMR-MARC bridges.
We believe our partnership with DMRPlus network provides us with better options for experimentation using the DMR-MARC network, while at the same time, maintain the high degree of reliability that the DMR-MARC has become known for, allowing us to serve our communities during times of emergency when our network is needed the most.
Stay tuned for more announcements related to these talkgroups as they are made available to DMR-MARC repeaters in your local area.
The DMR-MARC Leadership Team
Additional information on this partnership is available via these links:
This afternoon I received an email from the OpenRepeater project.
They have their first PUBLIC BETA ready for RaspberryPi B+, BeagleBone Black, and Odroid C-1.
I’ve yet to try anything out yet, but am VERY anxious, as I’ve been eyeing this project for a while, hoping it still had a pulse. As it turns out, it’s VERY MUCH alive!
Even the write-up and setup instructions are well-laid-out, thorough, and simple. You can see them as well as download an image of your flavor of choice at: http://openrepeater.com/getting-started.
I’m super excited and as I’m typing this, I’m signing up for the forums section on the site.
More to come, I am very sure!
So, one of the disappointments I have found with broadcastify / radioreference streaming is the lack of being able to listen to the archives of the stream. (of course, by “disappointment” I mean “darn, I wish it was free.” I completely understand the need for the company to make money, and the need to offer “premium services” to achieve that. I digress.)
Since I’m generating mp3 dump files locally, and I’m trimming silence, why not pump these to the cloud into a shared folder?
Enter Copy by Barracuda to solve my issues. There’s a Linux version of the end-user client program.
Setting it up was trivial, I downloaded Copy.tgz and expanded it into a folder.
I made my synchronized folder “~/Copy” for simplicity.
For further simplicity, I moved the x86 binary folder to ~/.copy/ where config is kept (also a good thing to note)
Once it’s set up, invocation is simple. I’m running it live currently, under a screen session, and will probably daemonize it soon. For now, on a screen session, I invoke with:
~/.copy/CopyConsole -root=~/Copy -email@example.com
So, now after midnight, I changed the “dump path” of the finished file from the previous day to go to ~/Copy/Scans/2015/ where it is then detected, and synchronized to “the great big cloud in the sky.”
check it out here: http://tinyurl.com/W8TCM
You’ll find a 2014 and a 2015 directory. There’s also a Misc directory (empty as of now) because I had some files I didn’t datestamp.
Sure, this isn’t as elegant as whatever time-stamped version of the “scanner wayback machine” that broadcastify uses, but it works and it didn’t cost me anything, and I own the archives. Always handy incentives. 🙂
So, one of the things I’ve done lately is to set up two scanners at my Mom’s house. Each scanner listens to one of the CARC Repeaters in Traverse City, MI. Each scanner feeds one side of a stereo input on a machine running Linux.
Left Channel is fed from the scanner listening to 146.860MHz.
Right Channel is fed from the scanner listening to 442.500MHz.
Ok, now that we’re done advertising, here’s the techie part.
Here’s how this is configured:
[general] duration = 0 # duration of encoding, in seconds. 0 means forever bufferSecs = 5 # size of internal slip buffer, in seconds reconnect = yes # reconnect to the server(s) if disconnected [input] device = plughw:0,0 sampleRate = 22050 # sample rate in Hz. try 11025, 22050 or 44100 bitsPerSample = 16 # bits per sample. try 16 channel = 2 # channels. 1 = mono, 2 = stereo [icecast2-0] bitrateMode = cbr bitrate = 32 format = mp3 quality = .2 #1.0 is max. lowpass = 6500 #cuts frequencies above 5000 Hz highpass = 120 #cust freq below 120 Hz server = [redacted] port = 80 password = [redacted] mountPoint = [redacted] name = W8TCM description = W8TCM Repeaters, Traverse City MI url = http://www.CherrylandARC.com genre = Scanner public = yes localDumpFile = /tmp/scanners.mp3 fileAddDate = yes fileDateFormat = -%Y%m%d_%H%M%S
service darkice stop sleep 1 touch /tmp/yo sleep 1 service darkice start sleep 1
This is kinda where I left it, which was fine, I was busy. I checked a month later, and there was an issue..:
The N8OUZ/R DMR-MARC MotoTrbo repeater is on the air on 442.2875+ (input 447.2875).
Currently on a temporary transmitter antenna and site, and with limited receive coverage, and limited transmit power.
But, it works, and you can test it.
Program your radios:
Time Slot #1 – Group Call 1 = World Wide
Time Slot #1 – Group Call 3 = U.S. / English Speaking Countries
Time Slot #2 – Group Call 2 = Chicagoland Repeaters Only
The current transmit antenna is a J-pole at 40ft…. but…
|Current Receive antenna, plugged
into the back of the repeater
in my basement..
The current receive antenna is a.. erm.. telescopic whip style scanner antenna standing… about seven inches tall.. plugged into the back of the repeater… in my basement…
Which might seem dumb…
But I can actually use the repeater reliably from work.
… how? I’m really not sure.. but.. I know TDMA has a lot better survivability than analog voice when it comes to getting through the noise floor in a usable way.
Check this out:
On the map, B is where I work, and A is the repeater’s home in my basement..
Note the size of the antenna compared to the Yaesu. No vertical gain there at all..
Notice that the Yaesu HT sitting to the left of it is listening to an active signal, same frequency as the XPR 6550 HT on the right.. The signal is sometimes an S2. Usually S0 or S1, sometimes not even there.
Mind you, the length of the Yaesu HT’s antenna is more than three times as long as the Motorola’s!!!
If it were an analog signal, it would be unintelligible. But it is audible, clear, and readable.
I had the same experience on the drive in to work today. Notice on the map. Between “Best Buy” and the number 37 on the map above it, I was very shadowed due to the hills near where it says Grand Traverse Crossing and East/North of that. I had almost NO signal.. on my MOBILE radio with an external antenna in the car, I could barely hear the repeater’s signal. It was not present more than it was. if it was a voice, I would no way have been able to comprehend it. .. the Motorola HT, with just the stub duck, on the SEAT of my car, inside the car, just sitting there horizontally.. I could UNDERSTAND the audio coming out of it.
It’s been a good while since I’ve seen a digital mode so easily and obviously out-perform analog modes. I’m very impressed.
I am anxious to finish getting the StationMaster antenna on the permanent tower, hardline up, and repeater moved to the final location…
tonight: duplexer fun! Perhaps even a better receive antenna. I still can’t believe it’s … usable! with no duplexer… from across town… from a whip in the basement!!