On Monday 21 Nov 2005 10:21, Barry Scott wrote: > Hartmut Hackmann wrote: > > Hi, Barry > > > >> Its reported on TV-card.com that this card cannot lock on to the > >> +0.167MHz > >> or -0.167MHz because its also using one of the TDA10045 or TDA10046. > >> Its going to make the autotune softwares life harder. > > > > Sorry, i have no idea what this could mean. Can you please explain? > > I am currently maintaining the driver for the tda10046 and i don't > > know about any shortcoming of it. > > Its a problem in the UK. See below. > > > Regarding an offset of 0.167Mhz: This is a full tuning step and there > > is no need to let the channel decoder compensate such a vast offset. > > But as far as i remember it is possible to increase the offset search > > range. This will make locking slower and it will definitely reduce the > > performance to accept a tune with such an offset. > > It is standard practice in the UK to publish that a transponder is on > 507.0MHz say but transmit on 507.167MHz or 506.833MHz. > Being able to set 507.0MHz as the transponder frequency and > have the card pull in from the + or - 1/8MHz is very useful. Er, I can confirm that other (TT and KNC1 designed) tda10045 and tda10046 cards work perfectly all over the UK. I don't see why the +/- 0.167Mhz is a problem - you simply set the tuner to the frequency (including the +/- 0.167Mhz) as published.
