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

#415: The MC-750 Portable Antenna from Chelegance - time to setup and take down

Aug 7, 2026

#414: How to use an SV4401A VNA to tune a duplexer

Jul 26, 2026

#413: Cascading Common-Emitter Amplifiers using an Emitter Follower

Jul 24, 2026

#412: Common Emitter Amplifier - Input and Output Impedance

Jun 28, 2026

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

Jun 13, 2026

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

Feb 1, 2026

Xiegu X6100 or Icom IC-705? QRP Livestream

OM0ET

unknown

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100% Pass Rate — Technician License Cram Class 🎉📻

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