Navigate antenna restrictions from cities, HOAs, and neighbor complaints. Know your legal rights under PRB-1, practical negotiation tactics, and stealth options.
Navigate HOA antenna restrictions with legal knowledge and stealth antenna designs. PRB-1, CC&R workarounds, and hidden antennas that actually perform.
Common-mode current causes RFI, weird SWR readings, and RF burns. Learn how feedline chokes work, where to place them, and which designs actually perform.
The critical differences between an end-fed random wire antenna and an end-fed half-wave (EFHW). Why they need different transformers, different counterpoises, and work differently.
Build and understand the End-Fed Half-Wave (EFHW) antenna. Theory, construction guide, matching transformer, and why it's the most popular multi-band wire antenna.
How to calculate real coax cable loss at HF, VHF, and UHF frequencies. Loss tables for common cables, when loss matters, and how to minimize feedline losses.
Why antennas have specific feedpoint impedances, what determines the 50-ohm standard, and practical methods for matching antennas that don't present 50 ohms.
Should you buy a higher-gain antenna or raise the one you have? Real-world analysis of antenna height versus gain for HF, VHF, and practical ham stations.
How to model ham radio antennas with EZNEC and 4NEC2 software. Setting up your first model, interpreting results, ground effects, and validating designs before building.
Beginner's guide to antenna modeling with MMANA-GAL and 4NEC2. Covers what modeling tells you, how to interpret results, limitations, and practical workflow for designing antennas.
Guide to ham radio antenna switching systems. Coaxial relay switches, remote antenna selectors, stacking switches, and how to manage multiple antennas safely.
Learn how antenna traps work using LC circuits to create multiband antennas. Practical guide to trap design, placement, and when traps make sense for your station.
Compare RG-58, RG-8X, LMR-400, and hardline coax cables for ham radio. Loss figures, specs, and practical recommendations for every use case and budget.