Sign a Cabrillo log

Use qg-trust sign contest.log -l Home to sign a Cabrillo log with your saved station location. QG Trust recognizes the format from the file contents. It accepts Cabrillo 2.0 and 3.0 and skips X-QSO records.

If QG Trust refuses the log, the message gives the physical line number and the requirement to meet. Open the original log in a text editor, correct that line, and run the command again. The message contains no calls or values copied from your log.

Requirement	Correction
START-OF-LOG must be 2.0 or 3.0	Export a supported Cabrillo version or correct the version header.
Header text must be UTF-8	Save or export the file with UTF-8 encoding.
CONTEST must contain 1 to 32 ASCII letters, digits, or hyphens	Use the contest sponsor's identifier. Remove internal spaces and other punctuation.
QSO mode must be one of CW, PH, FM, RY, DG	Correct the mode code using the contest's Cabrillo format.
Received exchange must have exactly one call candidate	Correct the exchange layout or export ADIF with an explicit CALL field.
No single received-call field fits every QSO	Correct the exchanges on the two QSO lines named in the message, or export ADIF.

A contest identifier outside ADIF 3.1.7's Contest_ID list is accepted when its syntax is valid and the same single received-call field fits every QSO. Missing or ambiguous received calls refuse the whole log before signing. QG Trust follows the format rules even when another reader accepts the file.