[Paul Stenning]

If the jitter was on the Pye monitor and not on the Sony TV, that's because the Pye was only received by Kat today (as you know since you bought it in for her), and has tempremental hold. It also needed thumping to make it start working!

Also Kat only finished building the external circuit on Saturday evening, so it is not really a finalised design yet.

Despite that, the results were most impressive, especially on Jeffrey's professional monitor.