Using the networking abilities of Motorola DMR radios I tested out some TCP/IP connection between two computers. This could form the basis of something really quite useful! Here's Electronic Noob Channel / electronicnoobblog
Here in the US, when iden was still around, we could establish a tethered data connection without any extra tariffs on a Boost Mobile prepaid line. The speeds however, were painfully slow however for basic browsing on mobile optimized sites and text based chat such as IRC it was passable. The dmr network connection is perfect for telemetry applications which don't require frequent high volume data transfers.
That's really interesting! I would imagine the speed of data transmission would be similar to the old GPRS networks on 2G considering the limited bandwidth available.
Very interesting indeed. Could I do that with the "newer" Anytone AT-D878UVII-Plus? I know it has Bluetooth, but I always thought it was just for audio...
Maybe next time you could do continuous ping to see how many packets drop. Very interesting. I wonder if the handset connected to a Windows device by USB would be more reliable?
Nice feature and easy to install! It will be nice to see also a speed for sending a 20KBytes file, and you can compare with speeds obtained using VARA FM. Encryption transfer is allow in ham radio bands in UK?
@@andykirby Slow can have different dimensions/sizes. Sending a file using AFSK 1200 bauds is slow, going to 25210bps is another thing. That's why I am interested to see the speed using Moto solution.
I remember seeing a video of yours where you show CPS settings for Hytera, and I think I saw radio to PC IP and forward to PC checkbox. Can hytera do this as well? And if so, is it interoperable with Motorola?
It's a good question. I'm not sure if the two are compatible but it's highly likely. DMR is a standard and both Motorola and Hytera use network interfaces.
@@andykirby Is there a chance you might test that out? I'm considering my first DMR radio, and second hand hytera are more plentiful and cheaper here than Motorola...
If IRC you can bridge the TRBO radio with a standard network on your PC and then you can pull packets from the WEB. Like you said it horrid for anything on a couple bytes but check that out. Mind you this was done with some 7550s and some 65XX radios via wire.
Yeah the issue with making the radio fully available to a modern computer and letting it use it as its primary network connection is that there is just too much data throughput, think of all the built in apps trying to access the network, it ends up overwhelming the network interface... now if you can just limit data sent and received on the radio interface then it could be useable.
@@andykirbyTools exist to severely restrict data usage of web pages, that could do the trick. I recently got the same type of packet data connection working with P25; it required very strict firewalls to avoid overwhelming the radio's network interface.
Hey Andy.. Just a note to let you know YT unsubscribed me from your channel. Was wondering where you went lol. I didn't know that about Motorola Radios. Thanks ;)
It isn't a lot faster, the reason it's slow is because the radio modem is currently configured to ACKnowledge packets so if a packet is not received by the other station then the radio resends it. I will try turning it off but of course then you lose some resilience.
@@andykirby There has got to be a FEC mode, or forward error correcting mode where instead of waiting for ack the packets include a hash of the contained data and self check on reception only requesting retrans as needed.
as I see it this is still limited by line of sight. Now....the methods of getting further ie ham repeaters or Motorola proprietary sytems are gatekeeped by financial or regulatory laws.
No, to access the Internet, one of the radios would need connection to an Internet gateway with a subscription. Some places provide dial up for free though so… maybe? But not by itself, no.
