IRTS VHF/UHF Field Day Rules

The IRTS General Contest Rules will apply, except as noted below


Date and Time

  From 14:00 UTC Saturday to 14:00 UTC Sunday on the first full weekend in July



  5 separate contests, one on each band:
  50 MHz (6m), 70 MHz (4m), 144 MHz (2m), 432 MHz (70cm) and 1296 MHz (23cm)
  A station may enter a contest on one or more bands / all five bands
  Each band will be scored separately, therefore separate logs for each band are required



  CW / SSB / FM
  A station may be contacted only once (on each band) irrespective of mode



4.1 Open Sections:
  Operating Period – Operation for up to the full 24 hour contest period
  Power Limit – Maximum power permitted by the entrant’s licence
4.2 Restricted Sections:
  Operating Period – Operation for up to 6 hours of the contest period; operation need not be for one continuous 6-hour period, but once operation has commenced in the contest, off periods must be a minimum of 60 minutes
  Power Limit – 100 watts PEP
4.3 Only one entry per band is permitted, however entries on different bands from a station may be mixed between Open and Restricted sections


Eligible Entrants

5.1 Any of the following operating in EI:
  an individual IRTS member, or
  a group of IRTS members, or
  a club using the club’s call sign or a contest call sign held by the club – provided the club is a paid-up IRTS affiliate and at least one of the operators is an IRTS member
5.2 This is a Field Day contest, so all stations entering must be operated portable on a site in accordance with the provisions of Section 8 below



  RS(T) plus serial number, starting at 001, followed by 6 character (e.g. IO63WG) Maidenhead locator



  All valid contacts: 1 point per km
Log submission info


Site & Power Supply

8.1 Buildings or man-made structures, other than those brought to, or constructed on, the site within 24 hours before the start of the contest for use during the contest, may not be used as antenna support points
8.2 Additional standby equipment is allowed on site, but it must not be connected to any power source when the main equipment is in use
8.3 For any one band, the station must operate from the same site for the duration of the contest.  (However, it is not necessary to use the same QTH for all bands entered)
8.4 The station must not be sited in any permanent or semi-permanent building
8.5 The station must not use the public mains supply
8.6 Power for all equipment may only be derived from a portable generator, or from solar cells, accumulators or batteries.  Fixed generators are not permitted.  Float charging, if any, must be from a portable generator
8.7 No equipment or antennas may be installed or erected on the site prior to 24 hours before the start of the contest.  This does not apply to storage of equipment


Operating Procedures

  The use of the DX Cluster or other spotting networks to obtain call sign and frequency information of potential new contacts is permitted.  Only facilities that are demonstrably part of a more general system, and in common use by contesters in different locations, may be used.  These facilities may not be used for posting messages or arranging skeds, nor is self-spotting or asking to be spotted permitted (see Rule 5.10 / General Rules)



(See Rule 6.2 / General Rules regarding the minimum number of QSOs for award eligibility)
10.1 Open Sections:
  The Thomond Trophy is awarded to the station with the highest checked score in the 50 MHz (6m) Open Section
10.2 Restricted Sections:
  •  50 MHz SDR Trophy
  •  70 MHz Oriel Trophy
  •  144 MHz Shandon Trophy
  •  432 MHz Slievenamon Shield
  •  1296 MHz Dermot Cowley EI2AK Memorial Cup
Contest Calendar and Rules page

Updated: 17 August 2021