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| Type | Title | Author | Comments | Last updated |
|---|---|---|---|---|
| Forum topic | Ghost Hunting micprohone | Jules | 2 | 2 years 11 months ago |
| Forum topic | Infrasound | Jules | 1 | 3 years 3 months ago |
| Forum topic | Pest Control with ultrasound | Jules | 7 | 3 years 3 months ago |
| Forum topic | Speech jammers | Jules | 6 | 3 years 7 months ago |