File:7l12-105m-helix.jpg
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7L12 105 MHz Helix filter. From Tekscope, Jan 1972
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:27, 30 June 2015 | | 876 × 499 (72 KB) | Peter (talk | contribs) | 7L12 105 MHz Helix filter. From Tekscope, Jan 1972 |
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