/Message: 4 Date: Tue, 08 Apr 2008 23:27:34 +0100 From: Philip Pemberton <lists@xxxxxxxxxxxxx> Subject: Re: WinTV-NOVA-TD & low power muxes To: Greg Thomas <Greg@xxxxxxxxxxxxxxxxxxx>, linux-dvb <linux-dvb@xxxxxxxxxxx> Message-ID: <47FBF156.5090703@xxxxxxxxxxxxx> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Greg Thomas wrote: / > /> After trying the latest drivers, I had a go under Windows; exactly the > > same set of channels. I just guess the Nova-TD isn't that sensitive. I > > may just have to look at boosting my signal, somehow :( / > / Disclaimer: this is the problem as I understand it, and anything I say should be treated as an unproven theory until proved otherwise... The Nova-TD seems to have an odd problem. Specifically, it seems to have some form of wideband low-gain amplifier/buffer on each aerial input (nothing like the high-gain narrowband LNA amplifier on the Nova-T-500). This takes into account the strongest muxes, not the mux you're currently tuned to (the T500 seems to do the latter -- which is more sensible). What this means is that if you've got one mux that's significantly weaker than the others -- e.g. the one that carries FilmFour vs. the PSB mux that carries BBC ONE -- you'll see a reasonable signal on BBC, but a poor signal (if you get a lock at all) on FilmFour. What I did was put a 6dB attenuator between my aerial and the Nova-TD. This weakens the signal to the point that all the muxes are in the Nova's capture range. It locks on, and you get a near perfect signal on all the muxes. Of course, it might just be that the input can't handle being overloaded, or was designed for the two shabby WiFi-style antennae that were bundles with the Nova-TD (which are truly useless). Those things probably wouldn't even work if you were within a mile of the transmitter... My signal's coming from Emley Moor, ~16 miles distance via a mid-high gain wideband aerial./ -- Phil. | (\_/) This is Bunny. Copy and paste Bunny lists@xxxxxxxxxxxxx | (='.'=) into your signature to help him gain http://www.philpem.me.uk/ | (")_(") world domination. I vaguely remember someone mentioning this problem doesn't affect the TD card/stick under the Windows driver. Can anyone confirm this? Cheers, dh : _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
