World first DVB-T RTX on 434.500 with 2MHz bandwidth

[oe7dbh]

A new era for ATV has arrived – affordable for every radio amateur!!

From the first idea (I started with a DVB-T Receiver with 2MHz bandwidth from SR-Systems, which costs 390 EUR without housing...) until today 4 years passed by.
8 months ago I started to contact manufacturers of DVB-T receivers intensively with the request for a receiver with 2 and 3 MHz bandwidth. A radio amateur in Germany gave me a hint for the website of HiDes Inc. http://www.hides.com.tw where I found the UT-100 but with 5, 6, 7 and 8MHz bandwidth only.
After about 50 e-mails we came to an agreement about a product line which will be available for the next 2 years.
I think that I don’t have to accentuate what exciting new possibilities for radio amateurs all over the world are now here – ATV will now be possible with DVB-T at the 70cm band (where reflections are welcome!) at places where no ATV had been possible. Now almost every radio amateur can start with ATV at a new level - as a side effect we will protect our 70cm band with this new activities.
Of course with SR-Systems we had a supplier for DVB-T receivers and transmitters but the price for a receiver started at 390 EUR; a transmitter costs 1200 EUR minimum without housing. A project was quickly nipped in the bud.

The upcoming productline from HiDes Inc. will have the following key parameters:

1. PC USB stick RX and TX for 70cm band at a suggested retail price of US$ 200 (I received already a prototype for testing!)
2. Standalone DVB-T Receiver for the 70cm band (works like a set-top box) inkl. remote control for about US$ 150
3. Standalone DVB-T Transmitter for the 70cm band (input CVBS and HDMI) for about US$ 500 (see: http://www.hides.com.tw/product_cg74468_eng.html )
4. Transponder RX 23cm DVB-T à TX 70cm DVB-T with integrated after-run time and possibility to setup a callsign for US$ ???

All products will work with an adjustable bandwidth of 2, 3 or 4 MHz; with 3 or 4 MHz it will be possible to use H.264 for higher quality.

My job is now to evaluate the USB stick (with our already existing DVB-T repeater signal from the nearby Krahberg http://www.amateurfunkverein-tiroler-ob ... tr-atv.htm ) for the amateur radio use, examine the results, publish the findings in amateur radio boards and find a distributor in the European marketplace. It will still be possible to buy the products directly from HiDes Inc. http://www.idealez.com/hides/home/en_US - but you should be aware of the additional amount for customs duty and tax in your country.

Today I had not very much time to live test the newly arrived toy. I hoped that the supplied CD would install all programs on my PC in auto run mode – but this was not true (I’m not an intimate friend of my PC...) and I ran into troubles. At this hard moment – thanks god – OE7ALT (a PC specialist) called me. Asking him for help he came to me immediately and in less than half an hour we could install the software on 2 computers.
Now we wanted to check if we could receive the DVB-T signal from the Krahberg ATV repeater. Adjusting the parameters, connecting the antenna – the signal could be received immediately! At an excellent quality for only 2 MHz bandwidth.
It worked also without any problems with my 2nd computer. After that I tried different attenuation elements between the antenna and the USB-stick. The signal was receivable down to 34dB. The video and audio recording to the hard disk worked also flawless.

Now I wanted to use the transmitter of the USB stick. I used the already mentioned SR-Systems receiver for about 390 EUR. It recognized the transmitted signal immediately and showed Signal 100% - Quality 100% but without showing video or audio.
At that time I had to leave for my QRL.

Result from today:
The DVB-T USB stick receiver works perfect with the nearby 2MHz DVB-T Signal from the Krahberg ATV Repeater at 434.500 MHz.

Update 06.04.2013
News from HiDes Inc.: They will also produce a DVB-T USB Receiver only – price will depend on demand between 50 – 75 US$

New result:
Now transmitting also works!
... mistakes are mostly made by men – I’m not sure if it was my fault or the files on the supplied CD are not ok.
I always used the supplied files from the CD for my tests with the transmitter – that did not work. It is possible to transmit the video signal of a PC attached webcam or stored streaming files. I tried to transmit the recorded files from yesterday and that worked fine!

First transmit test with UT100B on 434,500MHz & 2MHz Bandwidth http://www.youtube.com/watch?v=S_NkSGZ1 ... rw&index=1 video data come from Harddisk.

A successful day – I can truly recommend this USB DVB-T Transceiver !!!

Next time I will try to transmit with my PC camera.....

Any questions ??? But please don’t ask me about PC stuff or streaming – no skills...
From original http://www.oe7forum.at/viewtopic.php?f= ... 6c1c#p1005 translated by OE7AAI

[vidéo-33]

Bonjour et bienvenue sur le forum
J'avais déjà entendu parler de cette clé usb sur la liste atv depuis la semaine dernière
Il faut quand même bien savoir qu'il ne s'agit que de la partie "modulation" et que le PC est indispensable
et doit faire tout le codage ou le décodage vidéo et le TS à la norme DVB
De plus le produit est vraiment tout petit et fragile pour être raccordé à un ampli et à une antenne
et vaut à lui seul 230$
http://www.idealez.com/hides/productDetail/en_US/35644

Hello and welcome to the forum
...

picture from Darko OE7DBH

[Anonymous]

De plus le produit est vraiment tout petit et fragile pour être raccordé à un ampli et à une antenne
et vaut à lui seul 230$

Merci pour la photo
Oui c'est curieux cet entêtement autour du format clé USB.
Une version plus grosse attaquée en Ethernet serait bien plus souple.
Émission et réception dans le même boitier ne s'imposaient pas non plus.
Un grand pas dans la bonne direction néanmoins.
Reste une inconnue le soft

[oe7dbh]

PC USB Stick UT-100B RX Part work also with VLC Player new version 2.0.6
Picture below http://www.oe7forum.at/viewtopic.php?f= ... t=15#p1028

[marceljack]

De plus le produit est vraiment tout petit et fragile pour être raccordé à un ampli et à une antenne ...

A partir du moment où on ne le branche pas directement sur le port USB mais par une rallonge (longueur possible jusqu'à 5 m) et où les câbles coaxiaux d'entrée et sortie sont suffisamment souples, il n'y a pas grand risque.

[Anonymous]

PC USB Stick UT-100B RX Part work also with VLC Player new version 2.0.6
Picture below http://www.oe7forum.at/viewtopic.php?f= ... t=15#p1028

Thanks for keeping us informed of your progress.
Nice web site too although language is a problem for me.
I was impressed by this :
http://www.youtube.com/watch?v=OTVNxDJZ ... e=youtu.be
Any link to the PLL LNB used ?
73's

[oe7dbh]

News from UT-100B

http://www.eham.net/ehamforum/smf/index ... #msg670499

73 de Darko

[oe7dbh]

DVB-T on 70cm

http://www.hides.com.tw/hot_eng.html
New DVB-T USB Stick variants announced.
UT-100C only transmitter
UT-100D receiver only
data:http://www.hides.com.tw/product_cg74469_eng.html#310685

prices:http://www.idealez.com/hides/home/en_US

[oe7dbh]

Standalone 70cm DVB-T transmitters HV-100 in test....
Pictures on http://www.oe7forum.at/viewtopic.php?f= ... t=30#p1110
Freq.range: 50MHz to 950 MHz ( Future Dualband version 50~950MHz and 1200~1350MHz )
Bandwidth: 2MHz to 8MHz
Resolution: MPEG2 and H264
Output: max. 5dBm
Input: CVBS or HDMI
available beginning August.
Price 560,00 US$
Order by http://www.hides.com.tw

[Anonymous]

Thank you for keeping us informed.
73's