Re: Fwd: Bug#669715: dvb-apps: Channel/frequency/etc. data needs updating for London transmitters

[Andy Furniss <andyqos@ukfsn.org>]

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<channel>+ 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.