Offline Tool
Antenna Tuner / SWR Advisor
Enter your SWR and band — get field-practical next steps before you key up high power.
SWR troubleshooting guide — interpret readings and get practical matching advice for HF and VHF antennas. Works offline after your first visit.
Enter your SWR and band — get field-practical next steps before you key up high power.
Helps match non-resonant wire antennas — does not fix a broken antenna system.
KI4TQN is a ham radio, GMRS, and emergency communications hub from East Tennessee — free tools, local reference data, YouTube-aligned guides, and consulting for property owners. Use this map to find your lane.
Pick a path: FCC-licensed GMRS, ham exam study, FRS, Meshtastic, just licensed, emcomm volunteer, or property owner.
113 offline browser tools plus step-by-step deployment workflows. Install the site as a PWA for field use.
Tri-Cities, Erwin / Unicoi (I-26), NETNRC linked repeaters, nets, HF listening, go-bag sheets, and ARES/RACES context.
Blog, videos, downloads, antenna reference, and curated radio links — tied to the YouTube channel.
Paid emergency communications consulting for estates, ranches, and remote properties — plus contact and newsletter.