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| Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
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28th Oct 2022, 10:18 am
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#1 |
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Triode
Join Date: Mar 2022
Location: Reading, Berkshire, UK.
Posts: 48
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AM Pantry Transmitter
Not long ago, I picked up a pantry transmitter. It uses the 6BX6, EF86, and an EZ81 valve. It has the option to switch between LW and MW. It doesn't work at the moment, I will try to draw a schematic of it but might need some help with making it work. I will upload some photos very soon.
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28th Oct 2022, 10:23 am
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#2 |
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Triode
Join Date: Mar 2022
Location: Reading, Berkshire, UK.
Posts: 48
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Re: AM Pantry Transmitter
These are the photos of the front, rear bottom and top.
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28th Oct 2022, 10:44 am
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#3 |
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Dekatron
Join Date: Feb 2007
Location: Lynton, N. Devon, UK.
Posts: 7,078
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Re: AM Pantry Transmitter
Look forward to the circuit!
With those valves, it'll turn out to be a modulated oscillator, probably with screen-grid modulation to the 6BX6 (=EF80). |
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28th Oct 2022, 10:45 am
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#4 |
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Nonode
Join Date: Mar 2005
Location: Nuneaton, Warwickshire, UK.
Posts: 2,038
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Re: AM Pantry Transmitter
As an aside, is it still possible to buy that grill material?
Cheers Aub
__________________
Life's a long song, but the tune ends too soon for us all. |
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28th Oct 2022, 10:48 am
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#5 | |
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Triode
Join Date: Mar 2022
Location: Reading, Berkshire, UK.
Posts: 48
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Re: AM Pantry Transmitter
Quote:
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28th Oct 2022, 10:59 am
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#6 |
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Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,864
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Re: AM Pantry Transmitter
It's called "Expanded metal" and most of the DIY sheds have a little section with things like bits of grossly overpriced short lengths of angle iron and other sections, you'll find it there, usually in aluminium.
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
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28th Oct 2022, 10:59 am
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#7 |
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Heptode
Join Date: May 2015
Location: Chatham, Kent, UK.
Posts: 963
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Re: AM Pantry Transmitter
As an aside, is it still possible to buy that grill material?
Hi yes wicks /B and Q Mick |
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28th Oct 2022, 11:08 am
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#8 | |
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Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,208
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Re: AM Pantry Transmitter
Quote:
https://modelshop.co.uk/Shop/Raw-Mat...-holes/ITM6493 (They sell other sizes too) |
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28th Oct 2022, 1:04 pm
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#9 |
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Dekatron
Join Date: Feb 2003
Location: Cottingham, East Yorkshire, UK.
Posts: 5,761
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Re: AM Pantry Transmitter
It's sometimes referred to as 'expamet' and come in all sorts of mesh size, gauge of metal, and sheet size.
It's commonly 1.2mm steel: These examples are from Screwfix. (They have others): https://www.screwfix.com/p/rothley-p...B&gclsrc=aw.ds https://www.screwfix.com/p/rothley-p...-x-500mm/447jp
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David. BVWS Member. G-QRP Club member 1339. |
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28th Oct 2022, 2:05 pm
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#10 |
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Nonode
Join Date: Mar 2005
Location: Nuneaton, Warwickshire, UK.
Posts: 2,038
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Re: AM Pantry Transmitter
Thanks all. Sorry to hijack the thread. Hope the pantry transmitter lives again.
Aub
__________________
Life's a long song, but the tune ends too soon for us all. |
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28th Oct 2022, 9:50 pm
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#11 |
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Octode
Join Date: Feb 2009
Location: Bletchley, Buckinghamshire, UK.
Posts: 1,219
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Re: AM Pantry Transmitter
The case looks like it is built, at least partly, from "Lektrokit". This was a range of standard metal panels, grilles, etc that could be assembled into neat enclosures for electronics. Sadly no longer available.
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