Yeah, I saw those few scanning lines on the old UK 405 system and clearly heard its oscillator that drove me nuts. In fact when I was young nearly every TV's oscillator and "ultrasonic" alarms drove me nuts. I couldn't hear bats though.
I like the new progressive-scan like-doublers in new large screen TVs. The flicker of a single thin bright interlaced line on an ordinary set is intolerable. Over here the flicker is at 30Hz, in the UK it is at only 25Hz, isn't it? Many TVs "fuzz" their vertical amp so you can't see the individual lines and their flicker.
I modded my 1st colour TV (built in 1971, I still have it and it works fine) to have rock solid sync and its scanning lines don't budge on the screen. With other mods to its video amp it looks really clear. Decoding the old analog scrambling on it was fun and entertaining. :lol:
Now I have digital cable TV that I can't de-scramble. My cable co. called me the other day and said I have a problem with it. Oh yeah? No I didn't, when they called the week before to say the same thing I got a new digital box that worked fine. Its 160GB hard drive runs and records all the time! It's my own instant replay machine.
The technician arrived and measured a very low signal strength. He said he was ordered to give me a temp line strung up in the trees until they dig a trench for a new buried cable next spring. Because I could have keyed-in to watch a digital pay-per-view but the low signal from me messed the address to where they send the bill! :cry: