VK4ZXI

HiDes HV-202E DVB-T self-contained transmitter: Quality all digital live DATV from DSLR camera at last! The HiDes HV-102E DVB-T self-contained transmitter has arrived at US$660 delivered. I ordered the USB version of this professional HDMI/HD-SDI 4 band (100 MHz - 2.5GHz) DVB-T TX originally, but upgraded to the stand-alone box instead. (see why latter). It works perfectly out of the box and is easily configurable for any modulation or media parameters. I had a good experience with the HiDes DVB-T HD CCTV camera transmitter; see earlier post. As such I thought I would try their HDMI input DVB-T TX. Surprising similar, as will be explained. The impressive specifications per HiDes: There isn't much this box can't do! Any frequency (up to 2.5 GHz!), any band-width, any media modulation parameter. There isn't anything that comes close, at any cost. I set it up on a channel my little 16" TV could receive (by cable with an attenuator) and connected...

Windows 8/Windows 8.1 procedure for unsigned drivers and problems with antivirus There are a couple of problems with "new" software when using Windows 8 or 8.1, not specific to BladeRF, SDR-Console V2, or UT-100C DVB-T dongle betas. My comments are not a criticism of Windows 8, it is a vast improvement on Windows 7 and a necessary path for creating an ecosystem operating system where a common user interface is available on all devices, be they PCs, laptops, tablets or phones. This is necessary for the central administration of all devices in an enterprise setting. In any case, I prefer the Windows 8 interface and access programs in the start tiles system. Windows Explorer has been re-written and is much better. The first issue is that Windows 8 won't install unsigned drivers or even tell you that it hasn't. Given security issues, that is not such a bad thing, but I wish Windows 8 would at least tell you of the problem (as Windows 7 does) when installing drive...

DVB-T, UT-100C new drivers and software, DVB-T Repeater UT-100C new drivers and software There are new drivers and software for the UT-100 series devices from Hides/ITE: https://www.dropbox.com/sh/r80tjnkapkgzeg9/_3yj1s4t9 - I have yet to try them, but they are meant to fix compatibilities with Windows 8 and 8.1, possibly the unsigned driver problem, and more fixes to the PC2TV. I have yet to try them out. Blackmagic Design Intensity Pro capture card I have had trouble getting PC2TV to work but have been concentrating on the video source end. I want to be able to transmit digital video, not analogue (composite or S-video). PC2TV worked with my laptop webcam straight off, so I have been trying to get HDMI video to work. I want to be able to do amateur QSOs with real-time video and audio at high definition; the state of the art. As is noted later in this post, a repeater will assist this. I bought a Blackmagic Design Intensity Pro PCI-E capture card (AU$249)...

BladeRF on Haswell i5 running Windows 8 with SDR-Console at 935 MHz 20 MHz bandwidth Screen shot of BladeRF running on Windows 8 with i5 Haswell processor. The BladeRF windows installer uses an unsigned driver. With the extra security of Windows 8 it will not normally even give you the option of installing unsigned drivers, Windows 7 does. However Windows 8 has a special restart where the unsigned driver block can be disabled. I think I described it in earlier blogs. Using the earlier beta of SDR-console V2 per earlier blogs, the bandwidth is 20 MHz rather than 30. I think the narrower bandwidth is more appropriate re Nyquist, about half the 38.5 MHz bandwidth of the BladeRF. At 20 MHz, the CPU is barely busy at about 4 % versus 10 times that of screen shots at 30 MHz in earlier blogs. Simon Brown, the author of SDR-Console said in his Yahoo forum that the FFT runs at 30 MHz too. Dropping the bandwidth to 20 MHz seems to calm everything down.   ...

BladeRF receiving DVB-T test transmission from VK4ZXI 1mW at 2 m from UT-100C DVB-T usb TX Well, it works. UT-100C USB DVB-T TX transmission from my laptop being received by BladeRF on 70 cm channel. Not a bad signal with few spurious. Amplifiers will have low pass filter. Now to do the amplifiers and antenna.

I am setting up a DVB-T tx on the atv channel on 70 cm. I am using a UT-100c USB dongle http://www.hides.com.tw/product_eng.html   http://www.idealez.com/hides/product-detail/en_US/69859 . It is only US$169 and produces 1 mW of DVB-T output. The software is at https://drive.google.com/folderview?id=0BzoVnSl8XNdQMmZPbDhEczA2RjA&usp=shar ing . There are some pdfs of the device and how the software works.   To use the dongle, only the windows driver and PC2TV are needed. With PC2TV, only the video works at the moment. PC2TV takes a deal of setting up but will work with a PC/laptop webcam.   Only the UT-100C dongle is needed to start. Some ordinary domestic DVB-T receivers can be used.  The DVB-T channels in Australia are 7 MHz wide, the same as free to air TV. As such, the standard Australian DVB-TV settings can be used. At 1 mW, it is possible to xmit on a free commercial channel and tune a TV to it, without causing any dramas. How...