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#411: Tool Tip: Not all Phillips screws are created equal - JIS vs. Phillips screws and drivers

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#410: How to update the firmware on the SV4401A handheld VNA from Sysjoint / Chelegance

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#409: Ham Radio: POTA go-kit using a Hidden Woodsman M55 Haversack for the Elecraft KX2

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#408: Distortion using Class A, B, AB and C amplifier types (by request)

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#407: Installation of Yaesu optional 500Hz Collins Mechanical Filter in the FT-857D

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