okay so ive had my technician license for about two months now and i finally got a decent handheld, a baofeng uv-5r. i can hear people talking on what i think is the local repeater but whenever i key up nobody ever responds or acknowledges me. ive tried just saying my callsign and listening but nothing. i checked the repeater directory thing online and it listed a frequency and offset but didnt say anything about a tone. so i just transmit without any tone set. is that the problem? i dont really understand what CTCSS even does, i thought it was for like filtering out interference or something? do i NEED it just to get into the repeater or is it optional. also is there like a standard way to announce yourself on a repeater, like do you just say your callsign or do you say something else. sorry for the basic questions just trying to figure this out

yeah CTCSS is almost definitely your problem. most repeaters require it to actually open the squelch on the repeater's receiver end — without the right tone your signal hits the machine but it just ignores you. it's not optional on those systems, it's how the repeater tells the difference between an intentional transmission and random noise or interference from a distant signal on the same frequency. the tone you need is usually listed in the repeater directory but sometimes they leave it blank or outdated, happens more than you'd think. try looking up your local repeater club's website directly, they usually have more current info. once you program the right tone in your radio you'll probably get right in. as for announcing yourself, most people just say their callsign and say something like "listening" or "monitoring" and see if anyone comes back. some machines have an autopatch or courtesy tone that beeps after each transmission so you'll know you made it in. good luck, it clicks pretty fast once you get that first qso going

went through the exact same thing when i started lol. spent like a week wondering why the repeater was ignoring me. turned out i had the wrong offset AND no tone programmed. the uv-5r is a little fiddly to program by hand but once you get the frequency, offset direction, and CTCSS tone all set correctly it works fine. also one thing nobody told me early on — some repeaters are pretty quiet during the day and you might key up and get nothing back just because nobody's around to hear you, not because something's wrong. try during morning or evening drive time, that's usually when the regulars check in around here anyway