Can I Reach - RF Path Planner

Ever wonder if your walkie-talkie will actually reach the next campsite, if your FRS radio can span two neighborhoods, or if you can hit that mountain repeater from the trail? CanIReach cuts out the guesswork before you even key up. Drop two points on a map, configure your gear, and get a straight confidence score—ranging from Excellent down to Very Unlikely. It handles everything from standard FRS walkie-talkies and GMRS handhelds to HF, VHF, and UHF ham rigs.

GROUND PATH ANALYSIS
Drop your start and end points on the map, and the app pulls real terrain data to figure out if you've got a clean shot or an obstacle in the way.
• Calculates elevation profiles, line-of-sight, and Fresnel zone clearance while factoring in earth curvature automatically.
• Tweak your antenna heights and watch the score adjust in real time.
• Every calculation includes a primary limitation tag so you instantly know what's blocking your signal.

REPEATER FINDER
Browse, search, and save local repeaters on the fly. You can pull data straight from RepeaterBook with a single tap or punch in your own manually. Filter by band, tone, and distance, then run a ground path check straight to any repeater tower.

HAM LICENSE TRAINING
Studying for your Technician, General, or Extra class ticket? The app features a built-in question trainer covering all three FCC license pools so you can drill anywhere, track your weak spots, and walk into the test session ready.

RADIO LANGUAGE
Get up to speed with the phonetic alphabet, standard ham slang, and proper signal reports. If you want to go deeper, the Pro tier unlocks Q-codes, real-world on-air scripts, voice practice, and an AI QSO coach.

DIY ANTENNA BUILDS
Step-by-step illustrated guides with exact cut lengths so you don't have to guess. The 1/4-Wave Ground Plane is free, while the Slim Jim, 3-Element Yagi, and GMRS Slim Jim are included with Pro.

HF SKYWAVE (PRO)
When you want to bounce signals off the ionosphere and talk across continents using a simple wire antenna, the Skywave planner helps you sort out the right band, time of day, and expected hops.
• Covers 80m through 10m bands, operational time windows, and modes like SSB, CW, FT8, and AM.
• Pulls live space weather data including solar flux, K-index, and A-index.
• Uses hop arc diagrams and a Band Advisor to rank every band for your specific path, plus a Field Mode that shows your best band right now and what to try next.

FIELD TOOLS & ENGINE
• Grid Locator: Quickly translates coordinates into Maidenhead grid squares.
• Operator Profile: Stores your callsign and station defaults for quick use across the app.
• The Physics: Built on a seven-factor RF propagation model factoring in radio horizon geometry, Fresnel zone clearance, link budgets, obstructions, frequency, environment, and your station setup using real terrain data.

FREE VS. PRO
Core tools are completely free to use: unlimited Ground Path calculations, Technician license prep, phonetics, one antenna build guide, the repeater finder, and the grid locator. CanIReach Pro is a one-time $4.99 unlock that gives you HF Skywave, the full exam question pool, all antenna guides, and the advanced radio language course.

Whether you're camping with family on FRS/GMRS, studying for an extra class ticket, running ARES/SKYWARN comms, or just tired of wondering why you can't hit a local repeater, CanIReach gives you a fast, reliable answer in under ten seconds.