Originally Posted by Flk_d_pk

I have few suggestions to anyone that wants to develop refferee signaling system for uwh.

Such a system does not need to work underwater at all! What it needs, is to have a watertight casing and antennae mounted on the refferee's cap or top of the snorkel. It can be even easier to use already existing system and adapt it to become watertight. This should be simple and cheap solution. It needs to work only at 3 different frequencies, as there cant be more than 3 playing grounds in the same arena. Dont forget to put a button on the buzzer, as when it won't work, refferee's will have an option to do it the old way. For all it goes, if you can find a hand-held electronic remote trigger for any aplication, you can use the same electronics, and mount it in a watertight casing, and there you have it. Instant buzz, but only when ref puts a hand out of the water.
Chief ref will have easier job, watching the fauls on the surface and substitution.


Rudi