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Tag: DMR

MMDVM Single Face Modem

MMDVM Single Face Modem

My old and very good friend Enzo (Vincenzo – IU7ACP) has just build a single face MMDVM modem for testing. I will receive the board in the next few days and start some tests with some Motorola and Kenwood radio to see how it works. There are no plans for a mass production at the moment. I will deal with Enzo to have it Open Source with all the diagrams published for everybody.

Update 18 Mar 2017: Unfortunately the device didn’t work and I have abandoned the project.

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DV4Mini + Raspberry PI Kit

DV4Mini + Raspberry PI Kit

DMR, C4FM, DSTAR, DPMR, Portable Kit composed by:

  • Raspberry Pi 2 + LCD Display touchscreen
  • DV4Mini Dongle + Mini antenna
  • RF Wireless Keyboard with touchpad
  • Original Raspberry WiFi Dongle
  • 2.2A USB Power Supply
  • Cables, patches & card reader
  • All in a Pelicase waterproof floating box

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GoFundMe

GoFundMe

EDIT: Waste of time, I cancel the fundraising. 

I posted on GoFundMe a support request for a money collection to buy a DMR Repeater to cover the Mons area.
The crowdfunding is something mysterious to me and I don’t have idea on how it will end up, if someone will really put money on such a project or not. I’ve advertised the initiative on Facebook and Twitter and got some feedback but no money (yet!).

If you wish to contribute the link is: https://www.gofundme.com/dmr-mons

DMR Repeater

DMR Repeater

I would never die for my beliefs because I might be wrong. (Bertrand Russell)

Max IW0GXY is a great friend but he is also a problem (to me) at the same time; it is solely his fault if I reach the point to dig the internet to find a way to build a home-brew DMR repeater.

We are evaluating several ways ranging from a ready-made Hytera repeater for 1800 Euro to a cheap experimental MMDVR board plus two Motorola GM300 or two Kenwood TK-805.
Honestly there is absolutely nothing in between unless you want to consider the Motorola DR3000 as a valid solution which costs more than the Hytera compare to a brand new Motorola or like an Hytera compare to a used device on eBay with absolutely zero warranty, so Hytera is more convenient than a Motorola and MMDVM is more convenient in absolute.

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Obtorto collo, DMR

Obtorto collo, DMR

In cooperation with IW0GXY (formerly ON4GXY) Massimiliano, I started to explore the non-sense of the DMR technology. We bought a pair of Tytera MD-380 handhelds and a couple of DV4mini and we will try to experiment on such technology. I got my ID 2066034 which is required by the repeater in order to grant access to the equipment.

The plan is to explore the radio and try to catch the flavor of it and then, eventually, install an access point or a repeater.

Stay tuned…

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