If you landed here because you must find "36 sirina erasitexniko," follow these steps:
The most common for amateurs. You can adjust the frequency (tone) and the pulse rate (wailing effect) using potentiometers. Transistor Multivibrator: 36 sirina erasitexniko
"Sirina" translates to Siren . The number "36" likely refers to a specific frequency channel (e.g., in the VHF/UHF range), a model number for an electronic siren controller, or a specific draft code in an amateur radio program. If you landed here because you must find
void setup() pinMode(buzzerPin, OUTPUT); in the VHF/UHF range)
The classic 135 film format produces a frame that is roughly 36mm wide.
Rating (amateur scale)