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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 15th Apr 2024, 9:22 pm   #1
John_BS
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Default "Modern Radio" monthly - 1920's valves

Some time ago I bought a set of six bound volumes of this magazine, spanning 1922 to 1926.
There are ocasional articles on contemporary valves, with some data. Is any of this informationof interest, or is there already data available on 1920's valves? If not I can scan.

John
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Old 16th Apr 2024, 2:01 pm   #2
m0cemdave
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Default Re: "Modern Radio" monthly - 1920's valves

They don't seem to be available on the World Radio History archive site, so some of the information may be of interest.
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Old 17th Apr 2024, 10:43 am   #3
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Default Re: "Modern Radio" monthly - 1920's valves

This is a table compiled at the end of 1925.

John
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File Type: pdf M Wirelss dec25.pdf (936.6 KB, 85 views)
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Old 17th Apr 2024, 11:20 am   #4
sortedradio
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Default Re: "Modern Radio" monthly - 1920's valves

Thanks John, I have downloaded it just in case!
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Old 17th Apr 2024, 8:26 pm   #5
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Default Re: "Modern Radio" monthly - 1920's valves

Thanks for adding that data on early valves, it includes the Metro-Vick valves that are not in the settings data books for the Taylor 45.

David
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Old 21st Apr 2024, 5:54 pm   #6
John_BS
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Default Re: "Modern Radio" monthly - 1920's valves

It apears that the Technical Press outfit regularly tested components submitted by manufacturers, including valves. I've attached scans of the ones I've located. Also, an interesting bit of history, they became one of the first companies to occupy the brand-spanking new Bush House. (Note Marconi House only a stone's throw away.)
John
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File Type: pdf Mod wireless 1924 a.pdf (2.24 MB, 43 views)
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