On Nov 3, 21:23, D. Peschel wrote: 60Hz vertical scan - smooth 50Hz vertical scan - more flickery NTSC - flaky PAL - more reliable 2-13 (or was it 2-12?) TV was removed from the VHF band in Europe some years ago. The frequencies have been reallocated for various comms uses. 15-65 IIRC Mostly C-band? Ku-band although they are published in various places Ch.36 is actually allocated to other uses, so when the "Channel 5" TV station went live, mainly using channels around ch.36, lots of people had problems :-) Most of the TV stations use channels separated by 3 chanels (so 33, 36, 39) to minimise interference effects. BBC. it There was a U.S. version with a 110VAC PSU. The standard PSU is a switcher, though, and I know of one person who (inadvertantly) used it successfully on 120V. I got a phone call one day (in my capacity as engineering support person at an Acorn distributor) from a guy who'd bought a BBC and a monitor. He was having trouble with the monitor; it turned out he was working in Saudi Arabia, and had been using a TV originally. All was well, until he upgraded to a monitor bought in the UK. It turned out the monitor was intended for 240V, and didn't like Saudi electricity. Then it dawned on us -- the Beeb was OK, even though it was also running on the same Saudi 120V. YMMV :-) I think the 50/60Hz difference *may* be a problem, since a US monitor will prefer to sync to 60Hz. The US BBCs had a modified MOS ROM, with US scan rates and "colour" changed to "color" in the messages and BASIC keywords. That was about the only difference, AFAIR. The line frequency won't bother the Beeb PSU, but the monitor may not like the scan rate. It's very similar to a CGA-style monitor, BTW. An Amiga colour monitor should work well (Philips CM8833 or equivalent). -- Pete Peter Turnbull Dept. of Computer Science University of York