SkookumLogger v4.6 now available

Bill Myers, K1GQ has released the latest version of the contest logging software SkookumLogger for macOS.

SkookumLogger is a full-featured contest logging program suitable for the most demanding contester. It runs on MacOS, supporting single-mode and and mixed-mode events on 13 bands between 160m and 23cm.  SkookumLogger requires a K1EL WinKeyer or a YCCC SO2R Box to send CW.

Some SkookumLogger Features

  • Any number of QSOs per log
  • Two QSO entry boxes supporting interleaved SO1R, SO2V, SO2R/2BSIQ with one keyboard
  • Duplicate checking as callsigns are entered
  • Exchange Archive (personal call history file) for exchange pre-fill
  • Partial callsign matching against log, Exchange Archive, and Super Check Partials (SCP) database
  • Integrated download of the SCP and cty.dat databases
  • Integrated Cabrillo upload to support SCP
  • Separate activity table windows (like band maps) for each contest band
  • Multiplier checksheets for countries, regions, prefixes, zones, grids, other
  • Time Tracker and Rate Tracker panels
  • Score window with band breakdown and scoring for most contests
  • Bidirectional DX Cluster packet spotting interface, with skimmer and QSX support
  • CW call type-ahead and CW keyboard mode
  • Context-sensitive, queued message sending for CW, SSB (using radio DVR), FSK/PSK (using radio encoder)
  • Magic Message, like ESM with user-defined trigger key
  • Great circle maps with terminator and antenna pattern overlays
  • SkookumNet networking for multi-operator/multi-transmitter configurations
  • Amplifier standby/operate and drive power controls
  • Rotator direction display and control
  • Panadapter display with graphical known-activity overlays and radio frequency control
  • K1EL WinKeyer with KEY1/KEY2 management
  • YCCC SO2R Box+ and YCCC SO2R Mini interfaces, including their WinKeyer emulations
  • YCCC MOAS antenna switch interface
  • XK-24 Keypad interface with red/blue backlights
  • Cabrillo export for submitting log entries
  • ADIF and CSV export for moving contest QSOs to a general-purpose logger
  • Automated log submission via Apple Mail and via web browser
  • Statistics report for post-contest analysis of your contest log
  • CW Practice mode for developing your contest logging skills off the air

Changes in version 4.6 2024-04-26


  • Voice Keyer for sending SSB messages. See updated Guide, Advanced Operating > Messages > Synthesized Voice Messages.
  • Getting Started window that appears when a user runs SkookumLogger and hasn’t changed the My call field in New Log settings, Cabrillo tab to something other than “K1CX”.
  • Control-click in Panadapter window sets transmit frequency without changing receive frequency, for split pileup.


  • Handle the situation where a radio may or may not have a DVR. Before, SkookumLogger assumed all radios of the same type either did or did not have a DVR.
  • Modified K4 Mini-Pan appearance and behavior; see updated Guide, Advanced Operating > Panadapters > K4 Mini-Pans.
  • K4 TCP Gain menu items increase or decrease Main or Sub receiver gain in 3 dB steps using a combination of attenuation and DSP gain, to simulate analog radio RF gain control.


  • K4 Mini-Pan windows were drawing the receive bandwidth rectangle at an incorrect horizontal position for large bandwidths.
  • SkookumLogger was incorrectly displaying “Invalid call” for certain valid callsigns, such as TX7W.
  • Clearing the RIT/XIT offset for K3 radios was also silently turning off RIT and XIT states.

The latest version of SkookumLogger is available free of charge for download here or visit the App Store.