Hey, just wondering why this has no tags

On 5/4/05, Peter Onion <ponion@alien.bt.co.uk> wrote:
> In the UK, the BBC Radio 4 transmission on 198kHz is controlled by a
> rubidium frequency standard and thus is suitable for us as a off-the-air
> frequency standard.
> 
> While developing the hardware to lock a 12.288Mhz crystal to the 198kHz
> carrier I've accidentally build a detector for the 25 bit/sec data that
> is phase modulated onto the carrier.
> 
> See http://www.bbc.co.uk/rd/pubs/reports/1984-19.pdf for details of the
> modulation scheme and data formats.
> 
> So, my question is...  Does anyone have any PIC code for processing the
> detected bit stream to recover and check the date/time packets ?
> 
> I've seen code for MSF decoding (and I've written some myself) but this
> is a bit more difficult.
> 
> Peter
> 
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