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. Barry
