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11 Mar 201913 Mar 2019 htrietley

thermionic-valve-tube-vintage-r-type-1270

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An old British valve (vacuum tube) from around 1920.

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New page: Basic Electronics. This will be a continuing project.

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SRQ Technology Inc.
4165 Rosas Avenue
Sarasota, FL 34233
1-941-376-3092
www.srqtechnology.com
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