[deather]

The RadarTimer asks for a playerid but you dont send one.
Replace

Код:

SetTimer("RadarTimer", 30000, 0);

with

Код:

SetTimerEx("RadarTimer", 30000, 0,"i", playerid);

Also, your timer will call the function only after 30 seconds and not run for 30 seconds.

Explain? - SetTimer will make a timer for 30000ms (ie) 30 seconds. When the timer reaches the determined time it will call the function you've provided.