From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.ukfsn.org ([77.75.108.3]:36286 "EHLO mail.ukfsn.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753887Ab2EMQHw (ORCPT ); Sun, 13 May 2012 12:07:52 -0400 Message-ID: <4FAFDC55.9030703@ukfsn.org> Date: Sun, 13 May 2012 17:07:49 +0100 From: Andy Furniss MIME-Version: 1.0 To: Russel Winder CC: Mark Purcell , linux-media@vger.kernel.org, Darren Salt , 669715-forwarded@bugs.debian.org Subject: Re: Fwd: Bug#669715: dvb-apps: Channel/frequency/etc. data needs updating for London transmitters References: <201205132005.47858.mark@purcell.id.au> <4FAF89DB.9020004@ukfsn.org> <1336906328.19220.277.camel@launcelot.winder.org.uk> <4FAFC3CA.7070008@ukfsn.org> <1336921909.9715.3.camel@anglides.winder.org.uk> In-Reply-To: <1336921909.9715.3.camel@anglides.winder.org.uk> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Russel Winder wrote: > On Sun, 2012-05-13 at 15:23 +0100, Andy Furniss wrote: > [...] >>> Should that be 545833000 instead of 545833330, and 529833000 instead of 529833330? >>> >> Possibly - I think if you calculate by hand from channel number and add >> or take the offset if it it+ or - then you do get the extra 33. > > If I remember correctly the OfCom documentation states the +/- offset is > 0.166. Certainly that is what I used for my manual calculation. I was told when asking on uk.tech.broadcast that the offset was 167000, perhaps, if that's rounded up, then 166670 may also be valid and would give the extra 330. I don't know about ofcom docs but you can get other info if you check the "I am in the trade" box and enter your postcode here - http://www.digitaluk.co.uk/postcodechecker/ for the details you have to hover mouse over channel numbers, and of course convert channels to freq. The formula I was told was - (306 + (N x 8)) x 1000000 then if required +/- 167000 > >> I don't live in London, but using a slightly newer w_scan for my >> transmitter gave different output from that, with the 330 -> 000. > > Where did you get this w_scan command from, I don't seem to have one. wirbel.htpc-forum.de/w_scan/index_en.html To download there is a link at the bottom of the German page which is linked to from that page. > > [...] >> T2 0 16417 802000000 8MHz AUTO AUTO AUTO AUTO AUTO AUTO # East > > I wonder if the 0 and 16417 can be ascertained from OfCom documents? I don't have a clue about that.