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

[oe7dbh]

Brand new News : http://www.oe7forum.at/viewtopic.php?f= ... t=45#p1163

[drew23]

Hi All.

Just received a UT-100C (US$160) and UT-100D (US$80) (http://www.hides.com.tw/index_eng.html) and downloaded V2.2 software from https://drive.google.com/folderview?id= ... sp=sharing .

Using the rabbit-ear antenna that comes with it, I managed to get the ut100c going, streaming a video (converted with CyberLink MediaEspresso), using TSplayer.

In Australia, there is a 7 MHz channel on 70cm and four on 23cm (WIA band plan). As such it is possible to receive with many TVs and set top boxes. I have yet to try the narrow-band DBV-T.

I was able to receive with a conventional USB TV dongle, a Terratec Cynergy Stick+, that I had been using as a software defined receiver (SDR). The distance between them was only about 5 m, but I haven't tried any further.

I have had trouble getting my web-cam to stream via PC2TV. I use the same settings as for TSplayer, but get "Transmitter init failed". Tried some of the settings I found on the web (my German is not good), but without success. Any help would be appreciated.

I am building a 5 W amplifier from http://www.minikits.com.au/electronic-k ... -Amplifier to get beyond my 1 mW. Then to a decent antenna etc.

This is a first report from me on these impressive little devices; most impressed!

Regards Drew VK4ZXI Gold Coast, Queensland, Australia.

[oe7dbh]

Hi Drew

I have had trouble getting my web-cam to stream via PC2TV. I use the same settings as for TSplayer, but get "Transmitter init failed". Tried some of the settings I found on the web (my German is not good), but without success. Any help would be appreciated.

http://www.oe7forum.at/viewtopic.php?f= ... t=30#p1139
Audioproblem with LIVE sending: PC2TV trouble still exists, ITE company is working on it - please contact support@hides.com.tw


I am building a 5 W amplifier from http://www.minikits.com.au/electronic-k ... -Amplifier to get beyond my 1 mW.

Yess 5W Output with RA07H4047M ( approximately 6 ~ 9 Watt Output ) but only in FM mode . In DVB-T mode with -40dB shoulder only 0,5W Output max. http://www.oe7forum.at/viewtopic.php?f= ... t=30#p1118

[drew23]

Hi

Thanks for help. I can't even get video working with PC2TV, although I will try again.

I had seen your post on the RF amplifier, I will have to read it more closely. It will be a while before I get the amp built, but am very impressed with results to date.

Regards Drew

[on4bhm]

Hi,

I can't send my webcam either.
the only thing that works in win7 is to send the desktop... 1920 * 1080
that i have been able to receive with standard dvb-t tv... only few meters on uhf channel. (just for test)

i want to be able to send webcam too...

73's
on4bhm

[drew23]

Hi

I emailed support@hides.com.tw. They were very helpful.

I couldn't get PC2TV to work at all. They were very helpful.

I am not sure what I did, but my machine was reset a few times and it worked ok with video from the webcam. It is at a jerky scan rate, rather than 30 fps. Further, there is a significant time delay, maybe 15 seconds, but at least it worked. I was using a USB TV dongle on a laptop. I put the rabbit ears on our main TV and tuned it to the PC2TV, but the result was the same. I haven't pursued it further yet, but it looks like the encoder in PC2TV is slow, or not using the full resources of the PC (fast i5 Windows 8 video card etc. ).

I couldn't get the desktop to work with PC2TV, but I couldn't find the driver they mention in the instructions. However, they did send me a copy of the desktop driver. Using that PC2TV works with the desktop as well, but still slow frame rate. I can send you a copy if you pm me your email. I will see if I can upload the file as well.

I might try the recording function with PC2tV to see if that fixes the slow frame rate.

Overall, I am very pleased with the devices, they are so inexpensive but are so versatile.

I will plod on. I am still only newly returned to amateur radio and have much to do in setting up my station; too many things going on at once!

Regards Drew VK4ZXI

[drew23]

This is the desktop driver for PC2TV.

Driver.zip

PC2TV desktop driver

(17.85 KiB) Downloaded 444 times

Drew VK4ZXI

[oe7dbh]

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/

[G8XZD-TV]

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

Or even a European distributor would be nice...

[drew23]

Hi

I have a UT100C transmitter and USB Terratech receiver running simultaneously on an i5 laptop. Uses the laptops webcam. Even with low rendering rates, it is a bit jerky.

Edited the .ini files of the Terratec DVBviewer to include the Australian 7 MHz 70cm channel.

Its a bit hard to work out what is limiting, as the receiver stops when I start the Windows task manager to see what loads there are on the CPU.

I am reading up more on DVB to try and understand more of what is involved in the software and hardware. I thought most of the encoding/decoding was done in hardware in the dongles, but am not convinced.

The Hides/ITC software is probably less than optimal, being SDK, but at least it works.

I suspect that the webcam is the problem. I think if I used a video camera at the same frame size as that transmitted, the computer's job would be easier. I have a digital camcorder somewhere; I will try using it if I can find it.

Dedicated gear sounds good. We can use a 7 MHz bandwidth, using the same format as free to air TV, so reception devices are less of a problem. I have yet to try the UT-100D at a lower bandwidth.

Regards Drew