I. Venue
(a) can be carried out in parks, larger campuses or suburbs, residential areas and other places, but to avoid dangerous areas.
(2) The starting point and the ending point should be as close as possible or mutually used. The final position should be announced to the athletes and clearly defined.
Second, the competition equipment
(1) Set up 3 to 10 covert radio stations during the competition. The distance between the starting point and each station is 30-200m, which should be invisible to each other.
(2) The transmitting frequency of the radio station is selected within the range of 3.5-3.6NHZ, but the radio stations do not work on the same frequency.
(3) Radio stations automatically send such telegrams continuously, and the call sign of each station is:
Mo (-), stop 0
1 MOE(-) or L (-) of the station.
MOI(-) or 2 (-) on platform 2.
MOS(-) or 3 (-) of Station 3.
Channel 4 MOH(-) or 4 (-).
Channel 5 MO5(-) Wei 5(-)
Table 6 6 (- ...)
Table 7 7 (- ...)
Table 8 8 (- ...)
Table 9 9 (-. )
The shooting speed is 40-70 words per minute.
(4) Determine whether to set a beacon at the terminal according to the actual needs, usually taking Station 0 as the beacon.
(5) The transmitting power of the radio station is 0.3- 1W, and the vertically polarized wave is transmitted wirelessly, which is horizontal and directionless.
(6) Concealed radio stations should be marked with station numbers or call signs, and equipped with punched cards or other printing devices.
(7) The signal radiated by the direction finder within the competition frequency range should not be heard by the receiver with sensitivity of 3-5 microvolts away from10m.
Third, the competition method
(1) Before the competition, the starting batch or competition position of athletes shall be determined by drawing lots.
(2) The starting point needs to set up a preparatory area and a starting line to concentrate the starting athletes.
(3) The interval between each wholesale truck is 1-3 minutes.
(4) The specified time, departure interval, number and number of stops in each group, order of finding stops and whether there is a beacon at the end of each race shall be announced to the athletes before the competition.
(5) Athletes must wear numbered cloth issued by the organizer and carry the competition certificate as required.
(6) Athletes must complete the competition on foot independently, and shall not assist or get assistance from others.
(7) When discovering a hidden radio station, athletes should punch in their own cards or print the competition cards (the beacon station does not need to find or print them) as evidence of discovering the radio station.
(8) After the athletes pass the finish line, they should immediately submit their competition cards. The card is lost, and there is no result. If it is not printed as required or the mark is unrecognizable, the result of this station is invalid.
(9) Performance evaluation: The time taken from the time when the athletes get the starting command to the time when they find the platform in the required order and pass the finish line is the actual time of the athletes. If the specified time is exceeded, the result is invalid.
Fourth, the form of competition.
(a) individual time trial athletes to find Taiwan according to the provisions or the order of their choice. It is best to find more stations and less time for direction finding (including additional time). According to the number of participants and the form of competition, this competition can be conducted in the form of one final, two or more cumulative results; It can also be conducted in groups-preliminaries-rematch-finals.
(2) Each batch of individual knockout starts in pairs, with one person looking for the channel in sequence and the other looking for the channel in reverse order. After finding the designated radio station, the first person to reach the finish line wins (advances) and enters the next round.
(3) Each team in the team competition consists of 4- 16 people, and the gender structure and the number of people in each competition are determined by regulations. According to the number of teams and the duration of the team competition, different methods can be adopted:
1, in time trial mode. The team's performance is evaluated in the order of the total number of units sought by the team and the total actual time (excluding extra time). Always find the side with more sets and less actual time to win. It is not allowed to accumulate team results repeatedly on the basis of the above individual time trial.
2. Adopt the method of relay race. During the competition, each team will find a single station or multiple stations to find a single relay, and evaluate the team's performance in the order of total games and total actual time (excluding additional time). Always look for more stations and less total direction finding time to win.
3. Adopt the method of elimination (competition). During the competition, each batch starts from a pair (starting from two teams, each team 1 person, and the starting sequence of athletes of each team is arranged by each team according to the requirements), with one person looking for tables in sequence and the other looking for tables in reverse order. The first person to reach the finish line gets one point, and the last one gets zero point. The team with the specified score wins.
Five, where the provisions are not involved in the radio direction finding competition * * *, approved by the referee committee with reference to the "Radio Direction Finding Competition Rules" and the "Judgment Law" in 1989. 6. If a short-distance direction finding competition is held in the 2-meter band, the radio transmission frequency shall be within 144- 146 MHz, and the modulation mode shall be pulse modulation or frequency modulation. Others can refer to the 80-meter band. Seven, held a mass radio direction finding competition, including related radio knowledge assessment and engineering production appraisal. For the specific scoring method, the organizer can determine the level and scale of the competition.