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Alan Yates' Laboratory - 555 Super-Regenerative IF HF Spectrum Analyser
Very neat!
to 555 electronics radio test-equipment to-build ... on 19 June 2012
Crystal set with no preselector -- so it receives everything nearby. Looks like an interesting project.
to electronics radio receiver to-build ... on 19 June 2012
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| 1 | receiver |
| 1 | test-equipment |
| 2 | to-build |
tasty by Adam Sampson.