HAMSignal

Know when a band opens from where you are.

HAMSignal watches live NOAA solar data and tells you when HF conditions improve at your QTH — not just when a storm hits. Set your callsign and grid once, and your phone (or Apple Watch) buzzes when 10m, 15m, or 20m opens.

BAND-OPENING ALERTS
• Push notification when a band opens from your grid square, day or night
• Based on live SFI, K-index, and A-index, with a day/night model per band
• Especially useful on 10m for Technician licensees, and more valuable as Solar Cycle 25 declines and openings get rarer

LIVE CONDITIONS
• All HF bands rated open, fair, or closed for day and night at your location
• SFI, K-index, A-index, X-ray flux, and solar wind from NOAA SWPC
• 27-day NOAA forecast and historical trends
• Grey line / terminator map with your local sunrise and sunset
• Point-to-point path predictor with MUF/LUF and best band

WHAT CAN I WORK RIGHT NOW? (US)
• Pick your license class and see which bands are open AND legal for you, with exact frequencies, modes and power limits
• Built for new Technicians: see that 10m is open and exactly where you can use SSB, CW and FT8
• Based on the current FCC rules, with the rule cited on each row

AM I BEING HEARD?
• See which stations received your signal in the last hour, by band and mode, with signal reports and distance
• Uses public PSK Reporter reports for your callsign (FT8, FT4, WSPR, JS8, CW skimmers)

OPERATE
• DX cluster spots and PSK Reporter activity
• POTA self-spotting that queues offline and sends when you get signal, plus an SMS fallback
• POTA and SOTA park and summit lookup
• Amateur satellite passes (ISS, SO-50, RS-44, IO-117, and more) with correct up/down frequencies
• APRS stations near you and nearby repeaters
• Offline QSO logbook with ADIF import

POCKET TOOLS
• Maidenhead converter, distance and bearing, UTC clock
• Antenna length, coax loss, stub matching, Yagi designer, power/dB
• Band plan, Q-codes, phonetics, Morse reference

APPLE WATCH
• Glanceable K-index, SFI, and best band
• Complications for your watch face

HAMSIGNAL PRO (one-time purchase, no subscription)
• Unlimited band-opening alert rules (free includes one)
• DX spot alerts and sked alerts
• Contest Mode dashboard
• ADIF and Cabrillo export, Field Day auto-export
• DXCC and WAS award tracking

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Requires iOS 17 or later. Apple Watch app requires watchOS 10 or later.