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Showing posts from September, 2017

LimeSDR running DATV Express DVB-S TX software

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LimeSDR running DATV Express DVB-S TX software (1st draft) With the MiniTioune DVB-S RX, I have begun trying different TX using DATV Express software under Windows 10. The logical first hardware would be the DATV Express hardware TX, but having shifted rooms in the house, I have not been able to find; I know exactly where it was in the other room!

The LimeSDR is a popular recent SDR dual duplex transceiver by Lime Microsystems using a new version of their own chip. Cost is about US$250, but they have just announced a mini version for about US$150. It replaces the popular BladeRF; I sold mine to by the new model.



DATV Express TX software is available for the LimeSDR; https://discourse.myriadrf.org/t/windows-based-dvb-s-s2-t-transmitter-for-limesdr/1348 (https://wiki.myriadrf.org/LimeSDR-USB) . It worked well without any hitches on 23 cm, with both TX and RX running on the same computer. I am currently using my main PC, but will move it to my fast Dell laptop for project work. With all …

Decontis dtvtools DVB-T/S measurement, analysis and monitoring software

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Decontis dtvtools DVB-T/S measurement, analysis and monitoring software (draft)  Introduction There has been a lack of good DVB-T monitoring software for both TX monitoring and RX measurement, unlike DVB-S that has Tutioune. I came across a commercial grade package from decontis that is relative inexpensive and uses a cheap USB-T dongle. While comprehensive, it is not particularly easy to use, but is network-based. I have managed to get it going and plan to use it for TX power amplifier modification and monitoring. My favorite element is a proper constellation chart.
Other software and hardware The available DVB-T measurement,analysis and monitoring software is limited. CrazyScan2 for terrestrial/cable DVB-tuners https://sourceforge.net/p/crazyscan/wiki/Info/ uses PCTV USB tuner. The other alternative is to use a TV tuner, which gives MER and BER, but not constellation diagrams. A standalone TV installer instrument can be used, but good ones are expensive. Professional equipment is v…

MiniTiouner DVB-S receiver build

MiniTiouner DVB-S receiver build (draft)
Works well, some fiddly soldering.

Gives me DVB-S capability

Assembled version coming, about $100 from DATV Express group.

Links Unique hardware: https://www.batc.org.uk/shop/minitiouner
https://wiki.batc.tv/MiniTiouner_hardware_Version_2
https://wiki.batc.tv/MiniTioune_software
https://www.videohelp.com/software/LAV-Filters
All codecs: https://www.videohelp.com/software/sections/codec-packs
https://wiki.batc.tv/File:Notes_on_building_the_BATC_v2_Minitiouner.pdf