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| Websites Found an interesting website? Post the details here and share it with the rest of us. Please stick to websites that are in some way related to our hobby/interest. |
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19th Jul 2014, 12:15 am
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Retired Dormant Member
Join Date: Apr 2003
Location: Salt Spring Island, BC, Canada
Posts: 368
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Excellent valve radio construction articles
Dave Schmarder has some great radio construction articles at www.makearadio.com/tube/
The one I really like is the Single Tube Radio. It uses a hearing aid valve. The filament "drain" is 10 ma from a 1.5 volt cell and 250 microamps plate current from two 9 volt transistor batteries John. |
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19th Jul 2014, 11:25 am
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Octode
Join Date: Jan 2003
Location: Birmingham, West Midlands, UK.
Posts: 1,268
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Re: Excellent valve radio construction articles
Yes, a most interesting site, thanks for the heads up !
On that site is a link to another site, The M@d Scientist which has a section that includes some radios (one of which is based on a design on the makearadiosite). Solar powered valve radio anyone ? TTFN, Jon |
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22nd Jul 2014, 1:30 pm
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#3 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: Excellent valve radio construction articles
I only have to run a valve set between the hours of about 9 and 5 during the summer to have one of those by default
 (or Washing Machine/Air Conditioner/Tumble drier). Just one 0.25sq m solar panel should provide enough power for the average valve set. Less than that for a portable. Would still buy a lot of batteries, though.
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