Thursday, 23 February 2017

Decoding TETRA on Windows!


To capture the signals I was using an RTL SDR which is a very cheap device that allows you to tune to a wide range of frequencies. You can find one to buy at this link:
http://smarturl.it/rtlsdr (Redirecting link for your local area)

Video by cURLy bOi who wrote the wintelive software: https://youtu.be/OTKn1UwYMBI

The audio on this TETRA system is often not very good. I'm not sure of the exact reason for this but it sounds like they have the mic gain set to a fixed value rather than using AGC, so their voices are often way too loud or way too quiet. I don't know why they would do this. Maybe the radios they use aren't able to do AGC, in which case they must not be very good radios. I had to adjust the audio gain in this clip to reduce the volume of some radio users and increase the volume of others.

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Sunday, 19 February 2017

Baofeng DM-5R Programming software download

I noticed that it was very difficult to find a working link to download this software since everybody else was linking to the file hosted on radioddity.com which they had removed. I found a working download link eventually but thought I would post a new link online so others can find it easily. If you want to provide a file for download, please host it yourself or put it on some file host instead of just linking to someone else's download!
Anyway here it is:
Download
The link contains the software for the Baofeng DM-5R DMR radio for Windows and Mac OS.

Monday, 13 February 2017

Baofeng DM-5R demystified

The first time ever the Baofeng DM-5R has been explained honestly and without BS. If you noticed the poll in the card, please do answer it. I'd like to know what you think of it.


Wednesday, 8 February 2017

DMR: Tier 1 vs Tier 2

Different tiers of DMR explained simply.



Here is an example of some real DMR tier 1 radios being sold by Hytera:
http://www.dmrtier1.com/en/

Also see my blog post on the topic of dodgy chinese DMR radios such as the DM-5R:
http://radiosification.blogspot.com/2016/12/dmr-radios-to-avoid.html