This issue doesn’t just affect digital radios, but given the commonality of this style of charger I feel it’s worth a mention here. I love Motorola gear, but sometimes the big M does do some stupid things. Giving them the benefit of the doubt, I am assuming this was an Read More
It’s time to give a heads up to people and to try and encourage more amateurs to write their own codeplugs. Our hobby is primarily a technical hobby, and as such we’re all interested in tech and playing with this kind of stuff, and so perhaps this is a good time Read More
There seems to be some interest in attemptimg to decode unencrypted TETRA witha a £6 RTL dongle, I will post my own how to perhaps later on when i get time, but all i did was read and do what it says here, and you don’t need me to re-tell Read More
Setting up SDR# (or SDRsharp) for use with an RTL dongle is the cheapest way of listening to most digital voice modes on the VHF and UHF bands, and you don’t need to know talkgroups, colour codes, slots or anything, so it’s much easier than any other method, other than forking Read More
So, your shiny new DMR radio has arrived. You’ve obtained the programming software and necessary programming lead, stuffed in a few channels and ‘hello world, here I come’. But how to wet your feet in DMR without sounding like the newbie that you are? First, DMR operation does share some Read More
To Quote Zaphod Beeblebrox in ” The Hitchikers Guide to The Galaxy ” (like i need to put a link to it’s Wikipedia entry) ” It’s the weird colour scheme that freaks me. Every time you try to operate one of these weird black controls, which are labelled in black Read More
It seems there is a little bit of confusion surrounding callsigns not being displayed in the radio’s screen.. here’s a quick ‘how to’ that may help. As for callsigns on the various monitoring websites, don’t worry too much about that for now, because DMR-MARC is doing some big changes to Read More
The DM4600 radios are very good indeed – they do a lot of things and perform well, but here’s one thing that bugs a lot of people … where is the audio out jack ? Well, of course, there isn’t one, sorry about that. remember these are not designed for Read More
It’s seldom needed these days, but there are still some repeaters requiring a 1750hz toneburst (remember those ?) here’s a trick i use to make my DM4600’s generate a 1750hz tone.. it’s pretty simple, so here’s a quick ‘How To’ No claims of originality are made for this tip, but Read More
Thanks to Ashley M6GYT for spending the time to upload much needed codeplugs for the Kirisun DP770 and the BFDX TD-501 . Check the Codeplug Forum section. I added links to the software also. I added a CPS 11 UHF DP3600 DMR-MARC codeplug also.
So – you’ve bit the big one and bought a USB SDR – but how to decode some digital then ? I’m no expert, but here’s a brief introduction to getting started SDR’ing – and maybe – just maybe it’ll work for you too. I’ve put a so239 on a Read More
Most, but not all UK DMR-MARC repeaters are connected to the global DMR-MARC Network and not every DMR-MARC Repeater has all the same Talkgroups available, in fact it’s up to the repeater keeper which talkgroups they wish to carry. As you look at the list of possible talkgroups it is Read More
We’re often asked what a talkgroup is, and what all the rest of the jargon is all about, after all, you’re on the right frequency – you should hear stuff right ? – Wrong ! In FM simplex it’s easy to exchange audio, you just TX and you will hear Read More
This is a very useful article penned by Mot Orious here at GB7MB – i only posted it ! The circuit presented below is a simple op-amp based pre-amp to provide the necessary gain to enable a two terminal electret microphone to be used with the rear microphone input on Read More
This is another very useful article penned by Mr. Mot Orious here at GB7MB – i only posted it. The USB programming lead for the DM4000 series is an expensive item if bought from Motorola. However construction of a home made version is not complex. You will need 1. An Read More
Its a fine and long standing tradition amongst Radio Amateurs to convert old military or commercial (PMR or Land Mobile) equipment to get onto the Amateur radio bands, but technology moves on and its time Amateur Radio did too. You’ve bought a DMR transceiver, so lets get the set programmed Read More
If you want to use Amateur DMR-MARC repeaters, you need a ID number, its free, easy and just identifies you to the network, so go here, agree you wont use AGC (or we’ll send the boys ’round) or ARS, and its upto you what to type when it asks what Read More