LOG4HAMS
Logs a QSO in one screen.
Callsign, band, mode and reports on a single dial, with the clock in UTC and your local time beside it.
K3TCM20mSSB
QSO
Amateur radio logbook
Log4Hams
A logbook that keeps what actually happened on the air — and gets it back out in a format every other logger can read.
Beta release: Log4Hams is still under active development. Please use it at your own risk and keep backups of your log data.
Built for the record
What it does
A practical logbook for the details that matter before, during and after a contact.
CALLBOOK
Looks up callsigns on QRZ.com.
Name, QTH, grid and zones filled in from the callbook, with the distance from your station worked out for you.
QRZ LOOKUPREADY
QTH: PAGRID: FN20
LOG4HAMS
Uploads to your QRZ logbook.
Contacts go up as they are logged, and anything logged out of signal is queued and sent when the connection returns.
Queued contacts sync when signal returns.
LOG4HAMS
Keeps a record of the operator, not just the contact.
Notes about a station show on every QSO with them, however they were signing at the time.
Operator notes attached
PARKS ON THE AIR
Handles POTA.
Park references at both ends, so park-to-park contacts are recorded as what they are.
K-1234↔K-5678
PORTABLE DATA
Imports and exports ADIF and CSV.
ADIF is what LoTW, eQSL and every other logger speak, so nothing here is a one-way trip.
ADIFCSVLoTW
LOG4HAMS
Remembers your station as it was.
Change callsign, move, or sell a radio, and past contacts still export the callsign, location and rig they were actually made with.
Station history retained
Getting started
Log4Hams setup video
Watch a quick walkthrough to get Log4Hams installed and ready for your first contact.
INSTALLATION NOTES
Requirements
Windows 10 or later for the .msi. The installer bundles its own Java runtime — nothing else to install.
A QRZ.com account for callsign lookup. Uploading to a QRZ logbook additionally needs a subscription at XML level or higher, which is QRZ's requirement rather than this program's.
UTC / LOCAL READY