Offline Tool
Simplex Calling Frequencies
Common calling and simplex channels by band. Monitor before transmitting; follow band plans and licensing.
National ham, GMRS, and emergency simplex calling frequencies — 146.52, 446.000, 52.525, and more. Offline reference. Works offline after your first visit.
Common calling and simplex channels by band. Monitor before transmitting; follow band plans and licensing.
146.520 MHz FM is the US calling frequency — monitor before calling CQ.
When repeaters are down or congested; coordinate simplex channels in your ICS-205 plan.
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.
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