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weird_joe

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  1. Hi there, I tested a lot of different DVB-T dongles and hoped that because of a smaller PCB which needs more precision to design and has shorter signal ways to maybe perform better than the classical ones on the higher frequencies, but they behave almost exactly the same as its bigger competitors with the same chip set. The frequency drift is not noticeable different ... usually within the first minute or two the oscillator reaches its long term operation window for room temperature which is not wider than the one of the bigger units. As mentioned, it gets warmer because it can not dissipate the heat so well since it is so small and the actual sensitivity seems equal to maybe very slightly better than the other R820T based units. Though the previously mentioned very valid thought about trying to reach the same goal with a smaller PCB and maybe less parts could end up in a poor design is does not apply to this case. Here they just dont waste as much space as they do in the classical R820T version where one side of the PCB is almost left empty. If you want to modify this one for direct sampling (0-14.4MHz) or running with an external TCXO, you might be better of with the traditional big stick since there is a little more space for soldering. But apart from that I can only recommend these since they are being sold for much less than its competitors and show mainly the same great performance. If you really want to receive above around approximately 1200MHz, you should try to get one of the rare old ones using the E4000 tuner which does not only exceed enormously in Fmax, it is also much more sensitive in most of the higher frequencies and receives up to 2300MHz, though the R820T based ones outperform the E4000 in lower frequencies in terms of signal to noise and sensitivity to intermodulation when running on a wide band outdoor antenna. I hope this could be of help to some for decision making. Greetings Joe
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