File:20171126 GM8OTI BPF 23cm (Small).jpg
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20171126_GM8OTI_BPF_23cm_(Small).jpg (407 × 477 pixels, file size: 76 KB, MIME type: image/jpeg)
23 cm bandpass filter to design by John GM8OTI
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|current||19:52, 30 November 2017||407 × 477 (76 KB)||M0YDH||23 cm bandpass filter to design by John GM8OTI|
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