eHam

eHam Forums => Digital => Topic started by: OE7DBH on April 10, 2013, 02:26:15 AM



Title: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on April 10, 2013, 02:26:15 AM
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-oberland.at/xtr-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_NkSGZ1w7E&list=UU836UWEgDftg-BVZrtFJerw&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=7&t=410&sid=d2cb2ffbbd5676e1d8a6486a5bb06c1c#p1005 translated by OE7AAI



Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on April 11, 2013, 06:52:59 AM
http://www.youtube.com/user/oe7dbh

Please look at the first two movies, and description text below the movie....
73 Darko
oe7dbh@tirol.com


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on April 18, 2013, 11:58:03 PM

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=7&t=410&start=15#p1028





Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on April 27, 2013, 12:51:58 PM
http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=15#p1034
Hello Darko
I also purchased the UT-100B
The installation of the DBA Viewer is OK, the green bars are also there (437 MHz, 2 MHz BW with SR system Minimod)) but no picture.
How have you solved the problem?
Thanks for your feedback

http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=15#p1035
Hi everyone
The problem was solved with the absent image.
On my Minimod years since I had the same PMT and PID's on VIDEO and that was never a problem until today, but that did not digest .. Hi UT-100-B ...
Otherwise you can select the PID's on request.
The manufacturer HIDES had pointed out to me, I myself would not it come.
HIDES I can only praise, the technical support is very accommodating and can not be in a rain.

Translate by Google....


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on May 02, 2013, 09:37:05 AM
DVB-T  News !!!

http://www.hides.com.tw/hot_eng.html , Announced new DVB-T USB stick models:
UT-100C only transmitter
UT-100D only receiver

Data: http://www.hides.com.tw/product_cg74469_eng.html#310685
Price: http://www.idealez.com/hides/home/en_US


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on May 06, 2013, 10:42:11 PM
Full duplex is possible
full duplex on the same frequency is also possible !?
http://www.oe7forum.at/viewtopic.php?f=7&t=410&sid=09f41a85d7ef1b69bdce83c99e79506b&start=15#p1039


Portable 
http://www.youtube.com/watch?v=qhJkjRvpfyI&list=UU836UWEgDftg-BVZrtFJerw&index=1


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on May 24, 2013, 11:34:04 PM
Technical Data from UT-100 Serie

http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=30#p1088

vy 73 de OE7DBH


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on May 30, 2013, 08:42:14 AM
1Watt Power Amplifier for DVB-T on 70cm
Picture: http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=30#p1093


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on August 08, 2013, 03:37:36 AM
New test with DVB-T Sticks, DUAL BAND  70cm and 23cm http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=30#p1139

Technik: http://www.oe7forum.at/viewtopic.php?f=7&t=284&start=105#p1141

HamRadio: http://www.dl1mfk.de/Sonstiges/Darko/index.htm


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on September 04, 2013, 12:14:22 PM
Brand new News about DVB-T   PAL & NTSC   http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=45#p1163  :o


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on September 26, 2013, 04:48:16 PM
New Dual Band ( 70cm and 23cm ) DVB-T Standalone Transmitter is ready for sale !!!
http://www.hides.com.tw/hot_eng.html   

Data: http://www.hides.com.tw/product_cg74468_eng.html   

Online shop: http://www.idealez.com/hides/home/en_US   


We are still waiting only on standalone DVB-T receiver for 70cm Band, 23cm Band with Downconverter.

vy 73 de Darko  OE7DBH
oe7dbh@tirol.com

Website:
http://www.dl1mfk.de/Sonstiges/Darko/   


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on November 03, 2013, 01:16:25 AM
News about DVB-T Project: http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=60#p1201

News about High Frequency Project: http://www.oe7forum.at/viewtopic.php?f=7&t=284&start=105#p1156

OE7DBH home: http://www.dl1mfk.de/Sonstiges/Darko/index.htm


Title: RE: DATV World first DVB-T RTX on 434.500 with 2MHz bandwidth
Post by: OE7DBH on December 13, 2013, 10:56:54 AM
dvb-t  NEWS  ;)

http://www.oe7forum.at/viewtopic.php?f=7&t=410&start=75#p1252