Date   : Wed, 24 Oct 2007 18:54:59 +0100
From   : info@... (Sprow)
Subject: OT was Re: UM1233 TV modulators...

In article <471F4546.2030904@...>,
   Pete Turnbull <pete@...> wrote:
> On 24/10/2007 11:58, Anders Carlsson wrote:

> > I suppose it is 
> > a B/W signal just like on the Electron and Master Compact? Doing the 
> > same RF  modulator modification, I expect I could get colour composite
> >  video.
>
> On older Beebs (Issue 3 and earlier) you can achieve the 
> same end by soldering a small capacitor (470pF) onto the circuit.  My 
> manuals are at home so I can't tell you the exact location offhand, but 
> I can look it up if anyone needs it.  That's an official Acorn mod, by 
> the way.

For Master/Compact/BBC B/Electron details

  http://www.sprow.co.uk/bbc/howto.htm#colourcvbs

I've never understood why S39 was removed on the Master, leading people to
have to resort to the 470pF cap and soldering iron again,
Sprow.