For those who may be interested; after the demise of my old TV I investigated other methods of display from RF out. Using the Dadmei TV Box and some fine tuning you can get a rock solid and clear display for the Einstein on a LCD monitor.  I can finally load up BBC Basic again, the blurring is my unsteady camera hand not the display!

It's was good on a 17" CRT as well but took up too space in my overcrowded retro work area.