The DLARC Dispatch

Before calling CQ, take a moment to verify your antenna’s SWR at your chosen frequency. Even small shifts in setup like different ground conditions or nearby trees can affect resonance. A quick SWR check ensures your signal is radiating efficiently and prevents damage to your finals. A compact analyzer or Nano VNA can save valuable activation time and make the difference between a quiet band and a successful pileup!

POTA Field Checklist

This article highlights the utility of a dim-bulb tester as a simple, yet essential piece of DIY test equipment for safely working with and repairing vintage electronics, particularly old radios. This circuit places an incandescent light bulb in series with the power line of the device under test, acting as a crucial current limiter. When powering up the vintage gear, if there is a short circuit or a serious fault, the light bulb will illuminate brightly and absorb the excessive current, effectively limiting the power supplied to the device and preventing costly, catastrophic damage to sensitive components like transformers and vacuum tubes. It's touted as a "bright idea" for a cautious and effective approach to bringing antique equipment back to life. Submitted by Bob Gilbertson (KA0Q)

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