Ilariu Raducan wrote: Does anybody know why Twinhan 1030 shows higher SNR value when the > real SNR is low, and lower value when the real SNR is higher? Hello Ilariu! What kernel or what version of the driver do you use? I also got my Twinhan Usb alpha device working, but the driver is too unstable. It might be a bug in the corresponding driver. Tell it the developers. best regards Martin Ereth