DX Explorer
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Description
Audible RF Field Strength Meter
A simple NE555P IC audible RF field strength meter. It can detect a 1W VHF / UHF handheld from about 2 or 5 meters away. A useful tool to have for testing radio gear.
Schematic and Layout

Sep 20,2023
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Audible RF Field Strength Meter
A simple NE555P IC audible RF field strength meter. It can detect a 1W VHF / UHF handheld from about 2 or 5 meters away.
2148
3
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Published: Sep 20,2023
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File Last Updated: 2025/04/10 (GMT+8)
File update record
2025-04-1019:51:15
Gerber file is updated.
2024-08-0105:48:57
Gerber file is updated.
2023-09-3003:04:08
Parts List (BOM) is updated.
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Dominik Wodzick Dec 12,2024
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Engineer Jul 24,2024
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Engineer Mar 22,2024
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