NXDN and MMDVM

What is all this buzz about MMDVM and NXDN and ???????? other homebrew kits that are joining the Digital Ham Radio Era?

Well, like most forms of digital technology comes advancement of it. In this case it came from Jonathan Naylor G4KLX and his project for D-Star, Fusion and P25 (aka P25NX).
*I only know of those modes from Jonathan
But for some of you, you already know what it is and does. For others, it’s where you can take micro-computing to the next communications level, and have a “repeater controller” doing all the hard work with simple radio gear, and OR a hotspot 2-way now.

Here is where things stand at the moment, from the MMDVM Yahoo group, by way of Jonathan:
“I have merged he NXDN branch for both the modem firmware and the host into master. This means that the default version of the code is now NXDN enabled.

It has basic networking built-in, talking to the single MMDVM NXDN reflector. I posted details of how to use it a couple of weeks ago. I am working on making the software compatible with the official NXDN amateur network, and in due course, that, along with some form of gateway will be released. At that time the MMDVM NXDN reflector will be retired.

Please note that the extra processing load of the NXDN code means that it isn’t possible to run five modes on an Arduino Due. Aside from NXDN, D-Star and DMR are the next heaviest protocols for processing, so it may be possible to run (say) NXDN and P25 on a Due, and maybe more. The more powerful STM32 and Teensy based systems can easily run all five modes. I believe firmware for the ZUMSpot and MMDVM_HS boards will also be available soon.

In unrelated news. I’ve been adding FCS support into the YSF Gateway and taking the opportunity to clean the code up also. I did a first test this evening trying to log into FCS001-20 but with no success ūüôĀ It’s early days though.

Jonathan¬† G4KLX ”

So with that being said, the next level of NXDN and the Homebrew world is network linking, which is still being tested at this time, though the MMDVM network has a function for linking, it is not currently connected to the NXCore 65000 relm at this time.
I will let you know when that chapter comes into play, but do expect to see a SURGE of new users to say hello to!

Thanks
Evans Mitchell
KD4EFM

Hello from KD4EFM, Evans; 2017 Jan 22

Greetings one and all Hams!

Orlando Hamfest coming up in February, I will be there! Hopefully I can show off the NX-5000 series radios while there as well.
News:
Well, work has had me rather busy over the last 3 months, so I can’t really give a good update on what has been going on, but will pass this along.
NXREF and NXCORE will be getting a minor over-haul and some updates to them. For the NX-REF, I am working on re-tooling it to become a soft-bridge between the Icom and Kenwood IP infrastructure. Thus making it a bridge between the two platforms.
NX-Core is being looked over to improve a few functions and make it a little more versatile for the NXDN side of Digital Ham Radio.

At this time, there is no lead-in as to designing NX-Ref to interface into the DMR Network Breinmaster. YES, there will be experiments leading up to an interface, but will not be part of the CORE NXDN world wide network.

DV-MINI’s; My understanding is there are a few who are playing with the mini and have been able to link into the NX-Core with the home-brew NXDN hotspots in non-nxdn repeater areas. Looking to incorporate that into the next level release forthcoming.

Anyone who has articles or other items to add, please send them to me or to Cliff (K1IFF)
and we will get them posted here for others to read up on.

New Repeaters?
I am getting word here in Florida, two repeaters have been put up over in Brevard County
on VHF.  I will work on getting that information updated in the repeater list linked over on the right side menu.

73’s and Happy Digital Ham’ing

Evans Mitchell
KD4EFM

Hello from Evans; KD4EFM

Greetings and welcome to the NXDN Ham Radio Blog. Wanted to update a few thing and share a link.

We are working on designing a software “bridge” between the Kenwood’s and Icom’s. We now have several “core servers” around the U.S. with 2 of them here in Florida. If you’re interested in joining the NXDN network, please let me know and I will get you the information you need. We welcome any BRAND of NXDN manufacturers and encourage you to join the network, EVEN YOU WEST COAST PEOPLE OVER YAWNDER and ya’ll friends to the north of the border.

NXDN repeater search engine, well, thanks to repeater book, they now have a good listing of these around now. Here is the link to hit it up. (82 KNOWN NXDN systems out there)

I have been rather busy on the commercial side of Kenwood Type C trunking, putting up a few sites here and there, and working on getting our 36th site prep’ed and ready to go.
Hope you all have had a safe and great summer, fall is round’ the bend now. Know of any other NXDN’ers out there, spread the word. There is NO conFUSION that we run a great network here, and we keep things simple. We just let the one’s and zero’s flow!

73

Evans Mitchell
KD4EFM

NXDN Transparent Mode Program (Chat)

From a Radio Reference user, this is a pretty simple program that makes use of the Kenwood Transparent Mode using text (or SMS) and can send text files to and from
other users or stations.
Installation starts off in Spanish, but the program itself is English.

Let me know what you think.

https://www.dropbox.com/s/f54v7gh61uqgls3/NXDN-Chat.zip?dl=0

 

Icom Type C Radio Information

Well, I have a few to list on the newest Icom to come out.
The radio is pretty much like the ones out now that are Type D trunking but these units now act like the¬†Kenwood’s to a degree.

Icom_typeC
Product info is at ICOM

For the most part, this radio is Conventional and Type C Trunking platform ready.
For those of us who use Kenwoods and Over the Air Alias, this radio will encode and
decode the OTAA, as will the Kenwoods. (the Type D Icom’s however will still act funky
with the OTAA even with the Newer Icom units) The mobiles come with GPS installed,
but you have to order the antenna if you do not have one for it.
How the GPS on these units and on the Kenwoods play out for the NXDN REFLECTOR
network, that has to be worked on still. The main issue is getting a program designed to
code out the GPS and send it to APRSd with a numerical / callsign database to proper
APRS position marker.

I have not had a chance to work on one yet, but I would imagine it will be like any other
Icom software wise. When I can, I will post information as I go along with looking one over.
For the most part, now the statement of two business units making a inter-operable radio
is now very true. Rather it is type C or D, both still carry the NXDN CAI in conventional modes, and they can both work side by side on the NXREF network.

Got a lightning storm in the area, so this is it for now. Enjoy!

Evans

 

 

Back from vacation..

Hello all, back from vacation so I will be doing some updating here in the coming weeks as
I get all caught up with things again.

I will add this, while on vacation, Icom released their Type C NXDN radio line. What does this mean? You have a choice now on what Trunking format you want, but most of all, the
type C Icoms now have OTAA capabilities and are not effected by the Kenwood OTAA
on the Icom Type D radios. More on this as I build the block information and get photos
that are allowable for posting.

Kenwood NX-5000 Series has released the new ENHANCED Control Head, that will allow
for Multi-Deck RF units. More on this later, as I am installing mine shortly.

 

Evans Mitchell
KD4EFM

May 2015 Update

So far there are 34 active repeaters I have in my database that are up and running, with a
a few more to come during the summer time out on the west coast.

Advancement of the NX-Reflector is on hold at the time being, but once the group gets
the needed information, development will continue forward and some things such as
GPS2APRSd, Talkgroup steering to name a couple, will be worked on and enhanced.

Interested in more information, click on the link to the yahoo group and join!

Evans Mitchell
KD4EFM

NX-5300 / 5800 – KD4EFM to review it in December

Greetings and I hope you all have a safe Holiday season.

December 3rd, the due date for my NX-5300 and 5800 radios. As of right now, save your coins, you will need some of it for this beauty. With HAM FRIENDLY pricing, it’s gets deep
still when you start adding in features. We have posted LIST prices for the radios in the Yahoo group. Software, JVCKenwood has migrated to a License Management Client System. This means key piracy will get nipped in the butt. Here is a
screen shot of the program.
KPG-D1NK_photo1

KPG-D1NK_photo2
Here you have HTML export of the radio information.

This is the License Management System
KPT-300LMC_photo1

This is what they look like.

 

The Portable, you can remove the channel stop on the 16 channel switch for FULL ROLL OVER. The mobile fits the same bracket as the NX-700 / 800 series, comes with GPS, antenna ordered separately.

Remote Kits for the mobile, I posted on the yahoo group, will be forthcoming, and allows single head, 1,2 or 3 RF deck operation from a SINGLE HEAD or DUAL HEAD. Look for this to come out March – May 2015 (2nd Quarter 2015).
RF_deck_info

Enough for now. Cheers. I am waiting on the new line up of ICOM’s forthcoming, when I have that information, I will be posting about that as well.

Prices: Contact me directly please. They will not be posted on this or any other site I am on.

Evans Mitchell
KD4EFM

Californication? Yes. NX-5000 Multi Mode Kenwood, COMING SOON!

I had a nice chat with a California member of Kenwood, they are gearing up to get their rPi setup with their NXR-800, and get it installed and brought online soon!

I will post when it comes up and where to look for it.

Interested in joining the network with your ICOM or Kenwood NXDN repeater?
Your at the right place.

Search through the archive and posts to learn more.
I will be working on the HOW TO guide in the next few weeks and hope to have it
posted for both the ICOM’ers and Kenwood people.

October is the release of the 700/800MHz NX-5000. Lots of talk on Radio Reference
on this! The VHF and UHF will follow in December / January. And I will have HAM
Friendly pricing available as soon as I get the details. WARNING! It will not be cheap,
but you will get you monies worth for it.

Cheers!

Evans Mitchell
KD4EFM