SKILL BUILDING by SLALOM RACING
Atlantic Slalom Committee
SLALOM EVENT MANAGEMENT SERVICES

Radio Protocols
SLALOM EVENT MANAGEMENT SERVICES

Communications Network Design
To run a whitewater slalom race there must be at least three radio networks and possibly more depending on how the communications is set up with the several gate judging stations on the course. One radio network that establishes communications between Start, Finish and Scoring. And two or more radio networks that create communication links between the Gate Judging Stations and Scoring. Both Electronic Timing with manual Back-Up Timing and Manual Stop Watch Timing with manual Back-Up Timing will be covered on this page.



Manual Stop Watch Timing
The Start/Finish/Scoring radio network is used to operate the timing function and report individual competitor's times to scoring. The timing function is controlled at Finish. Finsh has the stop watches and transmits the "count down" to Start. Start controls the sequence of boats and the start interval.
The Start/Finish radio protocol begins when the race is turned over to Finish by the Chief Judge, (or Race Chairman), after it has been verified that all personnel are in place and ready to go!

DUMMY START
1- FINISH: Start this is Finish, let's do a dummy start.
2- START: I have bib number zero ready to start. (Finish records the bib number)
3- FINISH: Starting bib number zero in ten seconds.
4- About five seconds of dead air is allowed to give Start an opportunity to abort the start if necessary.
5- FINISH: Five, four, three two, one, GO! (Finish starts a stop watch and records the stop watch ID)
6- START: Good start for bib number zero. Next bib will be bib number "one".
7- FINISH: "Scoring, Start and Finish are ready to start the race. Please confirm with the race chairman that we should start the now.
TYPICAL RACE RUN START
1- START: I have bib number "X" ready to start. (Finish records the bib number)
2- FINISH: Starting bib number "X" in ten seconds.
3- About five seconds of dead air is allowed to give Start an opportunity to abort the start if necessary.
4- FINISH: Five, four, three two, one, GO! (Finish starts a stop watch and records the stop watch ID)
5- START: Good start for bib number "X". Bib number "Y" is up next. (Finish records the bib number)
6- FINISH: Scoring, this is Finish; I have a time for you.
7- SCORING: Go ahead Finish.
8- FINISH: Bib number "Z", 108.47.
9- SCORING: Bib number "Z", 108.47. Thank you Finish.
10- The sequence is repeated, starting at item #1.

A boat approaching the finsh line takes top priority to assure getting an accurate time. Starts are second priority and reporting times to Scoring is the lowest priority.
As a boat approaches the finish line and the bib number must be identified. Then the finish timer must select the stop watch, using the stop watch ID recorded on the timing sheet, that was used to start the bib number of the boat about to cross the finish line. Stop the watch as the boat crosses the finish line and record the time on the timing sheet. After the next good start or as time allows, the running time, or times. for each bib should be reported to Scoring.
Back Up Timing is pretty easy to implement in the system. Just add a second set of stop watches and additional personnel at Finish to keep and record duplicate times.



Electronic Timing
The Start/Finish/Scoring radio network is used to operate the timing function. The timing function is controled from Scoring using wireless remote start and finish line electric eyes or lasers. Start controls the sequence of boats and the start interval.
The Start/Finish radio protocol begins when the race is turned over to Scoring by the Chief Judge, after it has been verified that all personnel are in place and ready to go! Fore runners will perform the system test just prior to the start of the race.

TYPICAL RACE RUN START
1- START: I have bib number "X" ready to start. (Scoring enters the the bib number in the computer)
2- SCORING: You can start bib number "X" any time.
3- START: Good start for bib number "X". Bib number "Y" is up next. (Scoring enters the bib number in the computer)
4- The sequence is repeated, starting at item #2.

Back Up Timing xxxxxxxxxxxxxx.



Gate Station Radio Protocal
The Gate Judging Station radio networks are used to report slalom gate penalties to Scoring by bib number. As soon as a boat negotiates the last gate in the series of gates assigned to a Gate Judging Station, the penalties are reported to Scoring.

TYPICAL GATE STATION REPORT
1- GATE STATION "A": Scoring, this is Gate Station "A"; bib number "X" ; clean, clean, two, fifty.
2- SCORING: Bib number "X" ; clean, clean, two, fifty. Thank you "A".

It should be noted that Gate Judging Stations keep written records of all penalties by bib number on gate judging forms at the station.


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