Picked up this unusual set a few weeks ago.A True Vue a33. I "assume" it is a
405 line,220 volt rig.No channel selector.Eventually have to pull the chassis and take a looky-loo
https://www.toadstation.com/smartphone

http://www.thevalvepage.com/tvmanu/truevue/truevue.htm
https://www.vintage-radio.net/forum/showthread.php?t=9006

Yup....That is the only info I found too.The last post on that forum stopped in 06