[BBC-Micro] CEEFAX short story contest

[Tony Duell]

> 
> you could in fact quite legally broadcast a teletext signal from a small 
> transmitter if you are capable of building one, you MUST be careful however 

Some of the better TV test generators now include a few teletext pages -- 
there was a review of one in this month's 'Television' magazine which 
costs a bit over 100 quit and which will output 4 teletext pages along 
with the normal 'test card' video image. 

It can't be that hard to make a teletext generator, actually. When I get 
my ACW working, and the Morley teletext decoder hooked up to it, I might 
have a go at making a generator.

> to make sure that you get no  spurious emissions and also dont use an aerial 
> but a coax feeder between the tx and the tuner. (IE link it up exactly as 
> you would a TV).

I wonder if the stnadard video modulators would have enough video 
bandwidth for this. I know of at least one device which used such a 
modulator without an audio input, and generated the 6MHz sound 
intercarrier with a separate oscillator, mixed it with the video and fed 
it into the modulator. It worked. So you might get away with feeding in 
teletext data too.

-tony