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Old 2nd Jan 2020, 6:23 pm   #41
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Default Re: Pipe dream projects.

Quote:
I always wanted to 'prove' that 'normal' (ie 405-line) TV could be displayed using mechanical scanning.
Scophony did it in 1938 https://blog.scienceandmediamuseum.o...scanner-motor/
 
Old 2nd Jan 2020, 6:35 pm   #42
Martin G7MRV
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Default Re: Pipe dream projects.

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Originally Posted by avocollector View Post
There was this fabulous series of 'Nucelonics for the experimenter' in Practical Electronics many years ago which showed you how to build your own ratemeter and things like bubble chambers for observing alpha particles - those were things I always wanted to do but never got around to it. Nowadays the local authorities would probably have a blue fit about it.

Not so - im doing such things, using ex-Soviet G-M tubes, and cloud chambers made with cpu heatsinks, peltier heat pumps and jam jars! Theres a huge resurgence in homebrew and kit geiger counters and rate meters these days

My pipedream project is a HF Adcock array
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Old 2nd Jan 2020, 6:41 pm   #43
G6Tanuki
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Default Re: Pipe dream projects.

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Originally Posted by Martin G7MRV View Post
My pipedream project is a HF Adcock array
Alas I'm not yet *quite* enough of a landowner to erect a FLR-9 "elephant-cage".

https://en.wikipedia.org/wiki/AN/FLR-9

like I always envied at RAF Chicksands.
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Old 2nd Jan 2020, 6:53 pm   #44
Martin G7MRV
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Default Re: Pipe dream projects.

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Originally Posted by G6Tanuki View Post
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Originally Posted by Martin G7MRV View Post
My pipedream project is a HF Adcock array
Alas I'm not yet *quite* enough of a landowner to erect a FLR-9 "elephant-cage".

https://en.wikipedia.org/wiki/AN/FLR-9

like I always envied at RAF Chicksands.
That would be nice but does need a little space. Perhaps a field full of Wellbrook loops like at Forrest Moor is moor practical
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Old 11th Jan 2020, 5:24 pm   #45
avocollector
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Default Re: Pipe dream projects.

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Originally Posted by Martin G7MRV View Post
Quote:
Originally Posted by avocollector View Post
There was this fabulous series of 'Nucelonics for the experimenter' in Practical Electronics many years ago which showed you how to build your own ratemeter and things like bubble chambers for observing alpha particles - those were things I always wanted to do but never got around to it. Nowadays the local authorities would probably have a blue fit about it.

Not so - im doing such things, using ex-Soviet G-M tubes, and cloud chambers made with cpu heatsinks, peltier heat pumps and jam jars! Theres a huge resurgence in homebrew and kit geiger counters and rate meters these days

My pipedream project is a HF Adcock array
Maybe OK in the UK but here in NZ they'd have a blue fit - real anti nuclear culture nowadays.
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Old 11th Jan 2020, 10:17 pm   #46
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Default Re: Pipe dream projects.

For more than 25 years now I have been storing a pair of brand new triodes "Ed" and transformers and all the stuff, ECC 230 driver. I still hope to find the time to build the amplifier before I become unable to use the soldering iron ...

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