Sep 24

Talkgroep 907 tijdens het JOTA weekend

2i8hlsomastscoutingIeder jaar wordt tijdens het derde volle weekend van oktober wereldwijd de JOTA-JOTI gehouden. JOTA-JOTI staat voor Jamboree On The Air en Jamboree On The Internet. Scouts van over de hele wereld ontmoeten elkaar dit weekend via de amateurradio en het internet. Ook staat de JOTA-JOTI bekend als communicatieweekend waarin verschillende technieken worden gebruikt om te communiceren. Scouts kunnen daarnaast bezig zijn met techniek tijdens dit weekend. Een populaire activiteit is het solderen van elektronica bouwpakketjes. Ook het bouwen van een JOTA-toren is een voorbeeld waarin techniek en amateurradio samen komen tot één activiteit.

Tijdens het JOTA-JOTI weekend 2016 op 14-16 oktober 2016 zal er een speciale talkgroep worden ingericht op het BrandMeister netwerk. Gedurende het weekend zal Talkgroep 907 statisch worden geactiveerd op Tijdslot 1. Hopelijk gaan we veel scouts horen op Talkgroep 907!

Meer informatie vind je hier!
voorbeeldheaderjj

Sep 24

De waarheid over de BaoFeng DM-5R

Dit doosje van BaoFeng blijft de gemoederen bezighouden! Hieronder antwoord op, bijna, alle vragen. We hopen er snel eentje binnen te hebben zodat we hem aan de tand kunnen voelen.
Bron: qrznow.com
dm-5r_baofeng_76x
“On September 12th, we announced the release of the BaoFeng DM-5R on Radioddity.com. The BaoFeng DM-5R is the first DMR from BaoFeng, a rising star in the two-way radio production sphere. Radioddity.com and its Amazon Affiliate Store Sanatop are the exclusive retailers of the BaoFeng DM-5R, and the only stores that can be trusted to bring you a genuine DM-5R, backed up with fully cooperative customer support. The following addresses a few popular rumors about the BaoFeng DM-5R.

Click HERE to Pre-order your DM-5R on Radioddity.com. Send us an email (to support@radioddity.com) or Private Message us on Facebook BEFORE 9/26 to claim your BAOFENG DM-5R, and we’ll email you back a coupon for an extra 10% off!

As a manufacturer, BaoFeng has gained a large following in the Ham radio community, and a reputation for producing great quality radios at a very affordable price. Favorite BaoFeng Radios include the BaoFeng UV-5R line, the BaoFeng BF-888s, the BaoFeng UV-82 line and the BaoFeng GT line.

At $70, the dual-band BaoFeng DM-5R provides crystal-clear digital transmission, at a price point unmatched in the digital mobile radio space.

Since the initial DM-5R press release, there have been many questions about the DM-5R. We’re here to clear up as many of those questions as possible. We’ll do so with a simple game of TRUE or FALSE.

Rumor 1: The BaoFeng DM-5R is not compatible with MOTOTRBO TIER 2.

FALSE. While the BaoFeng DM-5R comes out of the box only supporting Tier 1, it can be easily upgraded to support Tier 2 online. The upgrade will be available at Radioddity.com as well as BaoFeng’s official website (under construction). This upgrade costs less than $10.

Rumor 2: The BaoFeng DM-5R is a dPMR, not a DMR.

FALSE. The standards for a DMR are as follows:

TS 102 361-1: Air interface protocol
TS 102 361-2: Voice and generic services and facilities
TS 102 361-3: Data protocol
TS 102 361-4: Trunking protocol

The DM-5R meets each of the ETSI Standards listed above. A true DMR, not a dPMR.

Click HERE to Pre-order your DM-5R on Radioddity.com. Send us an email (to support@radioddity.com) or Private Message us on Facebook BEFORE 9/26 to claim your BAOFENG DM-5R, and we’ll email you back a coupon for an extra 10% off!

Rumor 3: The BaoFeng DM-5R is not FCC or IC certified.

FALSE. The BaoFeng DM-5R has met FCC and IC standards in its testing. The documents may not be visible online, as it takes about 4 weeks for the documents to be available.

Rumor 4: “Buyer Beware”

TRUE. As with many popular models, manufacturers in China will almost instantly flood the market with cheap counterfeits. Be wary of where you buy your DM-5R. Radioddity.com and our Amazon Affiliate Store Sanatop are the exclusive retailers of the BaoFeng DM-5R, and the only way you can be sure to get a genuine DM-5R with full customer support and accompanying warranty.

All in all, the BaoFeng DM-5R is an important radio. Whether you upgrade it to Tier II or not, the DM-5R will provide crystal-clear transmission, all in a familiar package and at a price point that can’t be beat for a DMR.

Sep 24

MD380 experimentele firmware (2)

Inmiddels is de link waar de experimentele software te vinden is beschikbaar! Het team wil graag benadrukken dat het hier om experimentele firmware gaat! Het laden van deze firmware in uw radio is voor eigen risico!

De link is terug te vinden onder “Bestanden”, “Firmware”, “MD380 Experimenteel“.

1434270484876= hoe zit het nu met de md380 firmware =

Als Tytera MD380 of MD390 gebruiker, zal je vast wel eens van de
experimentele firmware van Travis Goodspeed hebben gehoord.

Je hebt vast wel iemand kunnen vinden die voor jouw de firmware heeft
‘geregeld’ en voor je in de portofoon heeft geflashed.

Maar hoe zit het nu echt in elkaar met al die verschillende versies en
websites die allemaal wat te vertellen hebben over de firmware.

Het begint bij de github repository van travis goodspeed op:
https://github.com/travisgoodspeed/md380tools.
Hier staat de broncode van de firmware modificaties.

Deze ‘repo’ kan worden gecloned door iedereen, en iedereen kan met deze
sourcecode aan de slag. Om te komen tot een bestandje wat je in je porto
kunt flashen, moet alleen de originele firmware met de gecompileerde
modificaties worden gecombineerd. De site http://www.pd0zry.nl doet dit elk uur
wanneer er wat veranderd is in de repo van travis.
Je krijgt dan mogelijk ook een versie die wat minder goed is dan zijn
voorganger. Zulke dingen gebeuren. De oplossing is eenvoudig, je neemt
dan een versie die 1 dag ouder is.

Vaak hebben de wijzigingen alleen wat met de interne werking te maken,
en merk je er weinig van aan de buitenkant. Het is ook niet eenvoudig om
erachter te komen wat er nu gewijzigd is. Daar moet je een halve
programmeur voor zijn, en de ‘commitlogs’ doorspitten.

Om dit te omzeilen gaat PA3MET in de toekomst af en toe op
hamdigitaal.nl een nieuwe versie plaatsen waarvan bekend is dat deze het
doet, en waarin iets zinvols gewijzigd is.

Sep 22

MD380 experimentele firmware

1434270484876= hoe zit het nu met de md380 firmware =

Als Tytera MD380 of MD390 gebruiker, zal je vast wel eens van de
experimentele firmware van Travis Goodspeed hebben gehoord.

Je hebt vast wel iemand kunnen vinden die voor jouw de firmware heeft
‘geregeld’ en voor je in de portofoon heeft geflashed.

Maar hoe zit het nu echt in elkaar met al die verschillende versies en
websites die allemaal wat te vertellen hebben over de firmware.

Het begint bij de github repository van travis goodspeed op:
https://github.com/travisgoodspeed/md380tools.
Hier staat de broncode van de firmware modificaties.

Deze ‘repo’ kan worden gecloned door iedereen, en iedereen kan met deze
sourcecode aan de slag. Om te komen tot een bestandje wat je in je porto
kunt flashen, moet alleen de originele firmware met de gecompileerde
modificaties worden gecombineerd. De site http://www.pd0zry.nl doet dit elk uur
wanneer er wat veranderd is in de repo van travis.
Je krijgt dan mogelijk ook een versie die wat minder goed is dan zijn
voorganger. Zulke dingen gebeuren. De oplossing is eenvoudig, je neemt
dan een versie die 1 dag ouder is.

Vaak hebben de wijzigingen alleen wat met de interne werking te maken,
en merk je er weinig van aan de buitenkant. Het is ook niet eenvoudig om
erachter te komen wat er nu gewijzigd is. Daar moet je een halve
programmeur voor zijn, en de ‘commitlogs’ doorspitten.

Om dit te omzeilen gaat PA3MET in de toekomst af en toe op
hamdigitaal.nl een nieuwe versie plaatsen waarvan bekend is dat deze het
doet, en waarin iets zinvols gewijzigd is.

Later meer!

Sep 21

BaoFeng DM-5R handleiding en CPS beschikbaar

RadioDitty heeft vandaag de handleiding en de CPS software beschikbaar gemaakt voor de BaoFeng DM-5R. Deze porto met VHF, UHF analoog en digitaal (DMR) zal binnenkort aan de early adopters worden uitgeleverd. Dan zal ook duidelijk worden of de porto gebruikt kan worden op bv het BrandMeister netwerk. De handleiding en CPS software vind je hier! Het wachtwoord voor de RAR is 123456.
www_radioddity_com-2016-baofeng-dmr-baofeng-dm-5r-dual-band-dmr-digital-radio-2000mah-31
dm-5rmanual
dm-5radigi image

Sep 21

DV4home vol gebreken

dv4homesmall_2_jpgHet internet staat bol van reacties na een post van David KK4MHI op eham.net over zijn DV4home. Het apparaat uit de DV4 familie blijkt nogal wat gebreken te vertonen. Wat erger is dat nu blijkt dat KK4MHI geweerd lijkt te worden op de forums van de leverancier naar aanleiding van deze publicatie. Wat bizar! Hieronder de posting van KK4MHI

KK4MHI Rating: 1/5 Sep 20, 2016 09:48 Send this review to a friend
DV4home – in detail Time owned: 0 to 3 months
Recently got a DV4home last week and have been doing a bit of playing around with it. I reported the numbered issues below to Wireless Holdings and they replied back that they sent them to the developer however I have not heard back anything else from them or the developer so I’m releasing my findings to the public so they might be better informed on this product.

Here is what I’ve found so far:

1) Audio quality is excellent both inbound and outbound.

2) Does not do Brandmeister “officially” – more on that later.

3) You can connect to both DSTAR and DMR at the same time however it will not play both at the same time – whichever one keys up first you’ll hear.

4) On busy DSTAR reflectors the main display will crash after 10-15 minutes and the entire thing will be in an unusable state.

5) On busy DMR reflectors when not connected to a DSTAR reflector as well, eventually the main screen will stop displaying call signs and information. The green RX LED will also go solid. When it’s in this state DMR still works, you can still transmit/receive however after about 10-15 hours in this state it will eventually stop working entirely.

6) The buttons on the handmic do nothing, just the PTT switch.

7) The rotary encoder is jittery – spin the knob “too fast”, i.e. at any rate other than “dog slow” and it’s either non-responsive or the counter starts going in the opposite direction.

8) The speaker in the box itself is only “OK”. You’re going to want to use to an external speaker. I use an old Kenwood comms speaker I had laying around.

9) On the web page interface the “unlink” option in the DCS menu doesn’t work. The only way to unlink from a DMR reflector is to link to a different reflector. There is no “4000” option to hard unlink entirely.

10) No way to hard-reset the box back to factory defaults that I can find if you screw up entering your callsign and DMR ID so make sure you NEVER, EVER screw up the initial setup web page process.

Now for some internal discovery.
This box runs both an SSH server as well as a mini-httpd webserver.
The web server runs the webpages that allow you to connect to different reflectors.

Over the weekend I was able to guess the root SSH password and login to the box. What I found is:
SPECS: 128MB of RAM and 4GB of internal flash storage.
I haven’t opened the box to see if the flash is chip-based or card-based.
There is also an internal 2-port USB hub. One USB port for the DV4mini and the other obvious port on the back for a future wifi USB adapter I guess.
CPU is an ARM926EJ-S rev. 5 (ARMv5TEJ), all info taken from DMESG.

1) DV_SERIAL. That’s right. Our old friend dv_serial makes an appearance!
When you plug in a DV4mini and power up the box, after the main process “sees” the DV4mini is plugged in it launches dv_serial and you control it using software on the desktop. There’s no way to control it from the device itself neither from the front panel nor the built-in webserver that I can find. Same thing as if you had it plugged into a Raspberry Pi. DV_SERIAL does NOT control the rest of the box, just the DV4mini if you have it plugged in. This is the same dv_serial program that the Linux DV4mini software uses on the Raspberry Pi.

2) OLED – oled is the main process that controls the entire box, not just what is displayed on the screen. Upon power-on after the Debian Linux OS has booted up the oled program is launched and it launches two other additional programs – DCS and DMR. But the OLED program has a bit of a problem – it crashes with a segmentation fault after 10-15 of listening to a busy DSTAR reflector because it seems to not be able to handle corrupted DSTAR packets very well. The OLED program also doesn’t handle the display very well leading to corrupted characters on-screen after a while when connected to a DSTAR reflector.

3) DMR – DMR is the program that handles DMR reflectors. It’s rock-solid except for one tiny issue – upon every transmission it receives it spawns local UDP ports that it never closes. Over time on a busy DMR reflector it will eventually spawn hundreds and hundreds (thousands?) of open UDP ports that never close and eventually ties up all the RAM causing the entire box to be non-responsive and stop working forcing you to power-cycle the box. On boot up it spawns 3 DMR processes.

4) DCS – DCS is the program it uses to connect to DSTAR reflectors. There seems to be conflict with the DCS program and the OLED program that initially calls it since on busy reflectors the DCS program causes the OLED program/process to crash out entirely leaving the control panel and display in an unresponsive state. Unlike the DMR process, the DCS process does not spawn a lot of UPD ports. Upon bootup 6 DCS processes are spawned and it keeps to that number over time.

5) DV4AMBE_1 and DV4AMBE_2. These two programs control the audio decoding/encoding. As you can see, there are two of them indicating there really are two AMBE chips in this thing. That’s actually pretty cool.

5) LINK – Link is the program called by the user interface webpages that connects both DMR and DCS reflectors. you basically call “/media/data/system/link LG4369” and it will connect the DMR program to reflector 4369. “/media/data/system/link REF030C” will connect DCS to the famous reflector 30 Charlie. On the DMR side the link program is hard-coded to only be able to use 4-digits. More on that issue later.

6) USER – user is the program the initial setup webpage uses to populate the config.cfg file located in /media/data/system with your callsign and DMR ID. If you screwed up this setting in the beginning configuration page there’s no way to edit this short of SSH’ing into the box and editing it using nano. Possibly by browsing directly to the config web page as well but I haven’t tried that yet.

7) config.cfg – this file is located in /media/data/system and contains your callsign and DMR ID. It also contains the DMR_MASTER configuration, i.e. this is where it’s setup to connect to a particular DMR_MASTER server located in Florida. It is possible to change this to point to a Brandmeister master server and I currently have mine pointing to the BM Dev server where it’s working fine…well, as fine as the DMR and OLED and link programs allow.

I found a slew of leftover debugging and testing web files and other oddities while looking around in the box indicating the developer did not do proper cleanup prior to releasing the software.

Also, the link program itself is hard-coded to only use 4-digits meaning that after connecting it to a Brandmeister master server you can’t go to a 5-digit talkgroup – at least as far as I’ve been able to find. Decompiling the link program itself didn’t give me any clues either.

I find it very, very odd that they made the OLED program the main program that controls everything including the display. I feel the display controls should have been split out into a separate program entirely.

There is also no watchdog process in place to monitor the state of the running DMR, DCS, and OLED processes and re-start them if they crash. Once they crash – and the OLED process crashes a lot – you have to reboot/power-cycle the device to get it working again.

There is no real internal logging done on this device at all that I can see.

There are a few main things that really bug me about this box:

1) Every few minutes the device pings Google for one ping – and one ping only. This is probably a way to do some sort of poor man’s network connectivity test. But if your DNS servers ever go down for any reason, not sure what will happen when it tries this single ping to Google.

2) Upon bootup (really upon startup of the OLED main program) it connects to and pulls down and saves the list of Brandmeister master servers. It also contains a list of Brandmeister reflectors/talkgroups. It does not use these in any way whatsoever during operation so not sure why it does this unless it’s leftover code from the Linux version DV4mini control program being used in the OLED program. Also finding traces of DVRPTR-NET all over the place including the hostname itself.

3) Compiler tools are already installed on the device to include git. I was able to successfully git clone and compile the MMDVMHost software even if it was very slow to compile.

4) If something happens to the Linux OS inside the box there is no way for a user to reflash the OS to it that I can find. I’m sure there’s some sort of undocumented process to do so but we’re not being told what that process is.

My bottom-line review of this device is that while the hardware itself has potential, the software is very poorly developed and very buggy. From my limited research on the matter it seems code that was on past hardware DG1HT has worked on has been repurposed for this box as well. That would be fine if not for the fact that the code is buggy and prone to memory leaks (DMR UDP ports) and seg faults (OLED/DCS not handling corrupted DSTAR data properly). Again, these issues are all software-based and fixable by the developer.

Until they fix these issues I would advise against anyone buying a DV4home at this time.

 

Sep 19

BaoFeng DM-5R toch Tier 2

Na de publicatie afgelopen week over de BaoFeng DM-5R portofoon op de RadioDitty website vond er een ware explosie aan berichten plaats. We kregen een lading reacties over ons heen dat het hier om een dPMR radio zou gaan en geen DMR radio. Vandaag echter is hierin meer duidelijkheid gekomen door een nieuwe advertentie op diezelfde website. Met een upgrade van 10 dollar is deze porto namelijk geschikt te maken voor Tier 2. Hierna is de porto bijvoorbeeld compatibel met het BrandMeister netwerk. Naar verwachting zal de prijs de komende tijd ook nog zakken.
dm-5radvert