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File:JTT filter.jpg (800 × 480 (44 KB)) - 20:28, 3 March 2017
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- [[File:YU7EF2m LPF_7 pole .jpg|300px]] [[File:JTT filter.jpg|300px| Response of YU7EF filter built by G7JTT]] [[File:146 filter.JPG|300px]]2 KB (359 words) - 17:32, 17 April 2021