Ham radio without the yard.
You have a license. You have an HOA. The antenna goes in the attic, on the balcony rail, or not at all. Unless you know the workarounds. This site covers them.
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Measuring a Compromise Antenna: What the NanoVNA Shows That an SWR Meter Hides
A low SWR at the shack can mean a lossy feedline rather than a working antenna. What R plus jX tells you, and how to measure it for under $90.
Invisible Wire Antennas: Getting an End-Fed Half-Wave Into an HOA Yard
Visibility is an engineering spec, not a hope. Wire gauge and finish, tree launch technique, where the feed point hides, and what a drive-by inspection actually resolves.
The Capacitor Decides Your Magnetic Loop: Voltage, Arcing, and the 25 Watt Ceiling
A magnetic loop's power rating is a statement about its tuning capacitor, not about its loop. Here is the voltage math, why loops arc, and what to check before you buy.
Your Neighbor Says You Broke Their TV: Handling an Interference Complaint
A neighbor's interference complaint is almost never a fault in your transmitter. Here is the overload mechanism, who the FCC holds responsible, and the fixes that end the argument.
RF Exposure in an Attic Install: Running the Evaluation You Are Required to Do
The FCC removed the amateur power exemption in 2019. Here is the MPE math for an antenna above a bedroom, worked band by band, and where a 100 watt attic wire actually fails.
Separate Receive Antennas: When a Worse Antenna Hears Better
Why a receive-only loop out-hears your transmit antenna on a noisy lot: the near-field mechanism, loop-on-ground builds, T/R switching, and what to buy.