David Looser wrote:
"Nick Gorham" wrote in message
...



And I certainly know that I have consistently failed to measure the
differences my ears insists are there.



I have found the opposite, that things are audibly indistinguishable despite
measurable differences.


Yes that too.

--
Nick

In article , David Looser
scribeth thus
"Iain Churches" wrote in message
...


Interesting piece of broadcasting memorabilia. But the HT rail of
1750V rather puts me off. In the words of Bluebottle from the Goon
Show "Harm can come to a young lad like that!"

As you say, and it's not as if it's all hidden behind insulation! The anode
caps on the QY3/125s are finned aluminium heat-sinks, whilst the various
chokes and capacitors on the HT rectifier chassis have screw terminal
connections on the top, interconnected by heavy-gauge tinned copper wire. I
recently tested the HT rectifier on the bench via a variac. As I turned the
knob on the variac and watched the HT meter pointer swing up to 1750V I had
to remind myself that what had been quite safe to touch a few seconds
earlier was now guaranteed lethal!


What do you intend to do with it?
Perhaps a little competition would make the BBC
pull their socks up:-)


It's not mine, I'm merely the guy overhauling it. It belongs to a group of
enthusiasts who want to use it to broadcast 405-line TV, they are convinced
they will get permission to do so on an occasional basis; well we'll see.

David.



Well Ofcom just went to a lot of expense and published a report that
there wasn't much call for Band One spectrum so they might get lucky)

Course are there any receivers around?..
--
Tony Sayer

"tony sayer" wrote in message
...
In article , David Looser
scribeth thus

It's not mine, I'm merely the guy overhauling it. It belongs to a group of
enthusiasts who want to use it to broadcast 405-line TV, they are
convinced
they will get permission to do so on an occasional basis; well we'll see.


Well Ofcom just went to a lot of expense and published a report that
there wasn't much call for Band One spectrum so they might get lucky)

My understanding is that a sizable chunk is allocated to the military, which
probably means that it's unused. The military seem to take the same attitude
to spectrum that I do to scrap kit; "it might come in useful one day". The
rest seems to be used for wireless intercoms, doorbells and the like.

Course are there any receivers around?..
--
Quite a few, I have several myself.

David.

Caught the Gadget Show this week.

Jester throng at twilight.

It is now so bad as to be almost unwatchable.

I managed about 5 mins.

It's worse than Blue Peter on acid.

Maybe it actually is Blue Peter on acid.........

andy