Skywave: RF Field Kit

Offline ham radio field kit

$4.99 · Designed for iPad. Not verified for macOS.

New in 2.0: an offline logbook with ADIF export, a real link-budget planner with Fresnel and line-of-sight checks, satellite TLE import, and backup. One purchase. Skywave is a complete amateur-radio and RF field kit that runs entirely on your device. Every lookup, calculation and log entry stays local — so the whole shack works on a summit, in a basement, on a plane, or anywhere the signal drops. One purchase. No account, no subscription, no ads, no cloud. NEW IN 2.0: LOGBOOK • Log contacts offline with UTC time, frequency, auto band, mode, reports, grid, name and comments • Live DXCC/ITU entity lookup, distance and beam heading from your grid • Export standard ADIF 3.1 (.adi) for LoTW, QRZ, Club Log or your desktop logger, plus CSV • Import ADIF from other loggers, with duplicate contacts skipped • Statistics: contacts, unique calls, entities, grids, best DX, charts by band and mode NEW IN 2.0: LINK PLANNER • Save point-to-point paths between grids, cities or a chosen repeater • Full link budget from your own station: power, feedline type and length, antenna gains, extra losses • Received level in dBm, µV and S-units, receiver noise floor, SNR and fade margin • Smooth-earth line of sight: radio horizon, earth bulge and 60 % first-Fresnel-zone clearance • Share a plain-text report of any plan REPEATER DIRECTORY • 22,000+ repeaters worldwide, searchable offline by callsign, city or network • Output and input frequency, shift, CTCSS/DCS tones, mode and status • Filter by band, mode, digital-only, tone or operational status; nearest first with bearing and map BAND PLANS & PRIVILEGES • US HF/VHF/UHF band plan by license class (Novice to Extra) • Enter any frequency to see who may operate there, in which modes, at what power ANTENNA, FEEDLINE & UNITS • Dipole, quarter-wave vertical, 3-element Yagi and full-wave loop dimensions in metres and feet • Coax loss for common cable types, including the extra loss from SWR • VSWR, return loss and mismatch loss from power or complex impedance • Free-space path loss, radio horizon, dBm ↔ watts, and dBm ↔ µV ↔ S-meter (IARU) GRID & GEODESY • Maidenhead grid ↔ latitude/longitude, up to 8 characters • Great-circle bearing (short and long path) and distance between grids or 230,000+ world locations SATELLITES • On-device SGP4 propagation with live look angles, 48-hour pass predictions and Doppler • NEW: import fresh two-line elements from a file or the clipboard (checksum-validated); element age is shown so you know when to refresh CALLSIGN / DXCC LOOKUP • Resolve any callsign or prefix to its entity and continent, with beam heading and distance CW / MORSE TRAINER • Clean on-device Morse audio, Koch-method practice (LCWO order), reference chart, adjustable speed, Farnsworth and tone BACKUP & RESTORE • Save your log, link plans and station settings to one file you control; restoring keeps a safety copy first PRIVATE BY DESIGN Skywave collects nothing and connects to nothing. Location is optional and used only on-device to set your grid and sort nearby repeaters. Bundled reference data is drawn from openly licensed public sources (HearHam repeater listing, GeoNames under CC-BY, CelesTrak/AMSAT public TLEs, the ITU call-sign series and the FCC/ARRL US band plan) and is attributed in-app. Link planning uses a free-space, smooth-earth model; terrain and HF skywave are not modeled. Verify current regulations before transmitting. Not affiliated with the FCC, ARRL, AMSAT, CelesTrak, GeoNames, HearHam or any logging service.

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Skywave 2.0 is a major upgrade, included in your purchase: • Logbook with ADIF 3.1 export and import, CSV export and statistics • Link Planner: link budget, S-meter, SNR, fade margin, Fresnel and line-of-sight checks for your own station • Import fresh satellite elements (TLE) from a file or the clipboard, with element-age warnings • Backup and restore of your log, plans and settings • dBm ↔ µV ↔ S-meter converter • Fixes: 8-character grid squares, a crash on non-ASCII grid input, duplicate Koch characters, settings that did not refresh across screens, decimal-comma frequency entry, clipped repeater count • Cleaner layout on iPad, higher-contrast text and better large-text support No account, no subscription, nothing leaves your device.

Version 2.0

The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Robert Corbin
    Size
    17.2 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Robert Corbin
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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