For further information on the Cabrillo format please visit Trey N5KO's web site which includes information about the Cabrillo format for the IOTA Contest.
For anyone wishing to learn a bit more about Cabrillo, you may like to read A Cabrillo Primer by Don G3XTT.

A full listing of the Cabrillo format as applied to RSGB contests.

(All links open in a new window, or use right-click / save-as to download the example logs to HD)

Cabrillo QSO template for RSGB-AFS-CW, RSGB-AFS-SSB, RSGB-NFD, RSGB-SSB-FD, RSGB-80M-CC.

• Example AFS CW log
• Example AFS SSB log
• Example NFD log
• Example SSB FD log
• Example 80m Club Champs log

Cabrillo QSO template for RSGB-160, RSGB-COMMONWEALTH, RSGB-LOW-POWER, RSGB-IOTA,
RSGB-21/28

• Example 1.8MHz log
• Example Commonwealth Contest log
• Example Low Power Contest log
• Example RSGB IOTA log
• Example RSGB 21/28 log

Cabrillo QSO template for RSGB-ROPOCO.

• Example Ropoco log

Cabrillo QSO template for RSGB Club Calls Contest

• Example Club Calls Contest log

Cabrillo QSO template for RSGB 80M Sprint

• Example 80m Sprint log

Header Descriptions.

• START-OF-LOG: version-number
  Must be the first line of the log submission. The current version-number is 2.0.
  
  
• END-OF-LOG:
  Must be the last line of the log submission.
  
  
• CALLSIGN: callsign
  The callsign used during the contest.
  
  
• CATEGORY: operator-category [mode-category] [power-category]
  For HF contests the operator-category must be one of the following:
  SINGLE-OP, MULTI-OP, SWL, or CHECKLOG.
  The mode-category must be CW, SSB or MIXED and applies only to RSGB-IOTA.
  In the RSGB-80M-CC contests the mode-category must be CW, SSB or DATA and
  the power-category must be LOW or QRP.
  
  
• CATEGORY-ASSISTED: [assisted-status]
  The value or assisted-status must be ASSISTED or NON-ASSISTED. This tag applies only to RSGB-IOTA.
  
  
• CATEGORY-DXPEDITION: [dxpedition-status]
  The value dxpedition-status must be DXPEDITION or NON-DXPEDITION. This tag applies only to RSGB-IOTA.
  
  
• CATEGORY-OVERLAY: [category-overlay...]
  The category overlay of the log submission as follows:
  (RSGB-NFD, RSGB-21/28-SSB, RSGB-21/28-CW) - OPEN, RESTRICTED, or QRP.
  (RSGB-COMMONWEALTH) - OPEN, RESTRICTED, or HQ.
  (RSGB-SSB-FD) - OPEN or RESTRICTED.
  (RSGB-LOW-POWER) - 10W FIXED, 10W PORTABLE, 3W FIXED or 3W PORTABLE.
  
  
• CATEGORY-TIME: time-category
  The time category is only applicable to the RSGB IOTA Contest and must be either 12-HOURS or 24-HOURS.
  
  
• CLAIMED-SCORE: n
  The claimed-score of the log submission, in integer form such as 1217315 or 19113 or 12.
  
  
• CLUB: text
  Name of the radio club with which the score should be aggregated. This tag is required for RSGB-AFS-CW, RSGB-AFS-SSB and RSGB-80M-CC. It is also required for RSGB-CLUB-CALLS unless CLUB-OVERLAY is NONE.
  
  
  
• CLUB-OVERLAY: text
  This tag is only applicable to the RSGB-CLUB-CALLS contest and must be specified as CLUB STATION, MEMBER or NONE.
  
  
• CONTEST: contest-name
  The contest-name must be one of the following: RSGB-AFS-CW, RSGB-AFS-SSB, RSGB-160, RSGB-COMMONWEALTH, RSGB-80M-CC, RSGB-80M-SPRINT,RSGB-ROPOCO, RSGB-NFD, RSGB-LOW-POWER, RSGB-SSB-FD, RSGB-21/28, RSGB-CLUB-CALLS
  
  
• CREATED-BY: text
  Name and version of the logging program used to create the Cabrillo file.
  
  
• IOTA-ISLAND-NAME: text
  This tag is only applicable to the RSGB-IOTA contest and should be speficied by island stations to indicate the name of the island they operated from (not the IOTA reference number).
  
  
• NAME: text
  
  
• ADDRESS: text
  Name and address.
  
  
• OPERATORS: callsign1 [callsign2 callsign3...]
  A space-delimited list of operator callsign(s). You may also list the callsign of the host station by placing an "@" caracter in front of the callsign within the operator list, such as OPERATORS: @G4MRS
  
  
• SOAPBOX: text
  Soapbox comments. Please include information about antennas and equipment used.
  
  
• QSO: qso-data
  

Header Explanation.

• freq:
  Integer frequency in kHz; if freq not known then 28000, 21000, 14000, 7000, 3500, 1800
  
  
• mo:
  CW, PH, RY or PS
  
  
• date:
  UTC date in yyyy-mm-dd form
  
  
• time:
  UTC time in nnnn form
  
  
• call:
  callsign
  
  
• rst:
  RST
  
  
• t:
  transmitter id 0 or 1 (used in the RSGB-IOTA multi-op category)
  
  
• nr:
  Serial number
  
  
• ex1:
  Postcode in Ropoco
  
  
• ex2:
  Two-letter district code in 1.8 and 21/28 contests; 'HQ' for headquarters stations in Commonwealth contest; IOTA reference number in RSGB-IOTA, of form aa-nnn for island stations; Power in Low Power contest, two or three characters as received; 'MEMBER', 'CLUB' or 'NONE' in Club Calls Contest. Filled with hyphens if no other info. sent, e.g. '------' for non-island stations in RSGB-IOTA
  
  
• ex3:
  Name of club received in Club Calls contest