October 14th 19, 12:10 AM
posted to rec.radio.amateur.moderated,rec.radio.amateur.equipment
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external usenet poster
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First recorded activity by RadioBanter: Mar 2017
Posts: 3,844
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[QRZ] Evolution of the Chinese 572B tube
Amateur Radio Equipment Reviews
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Evolution of the Chinese 572B tube
Posted: 13 Oct 2019 07:15 AM PDT
https://forums.qrz.com/index.php?thr...b-tube.676593/
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