okay so i finally got my technician license last month and ive been trying to get on the local 2m repeater but nobody ever seems to hear me. i programmed the repeater output and input frequencies correctly i think, and i can hear other people talking just fine, but when i key up nobody responds and i dont get the courtesy beep or whatever its called.

someone at the club meeting mentioned CTCSS tones and i kind of nodded like i understood but honestly i have no idea what that is or how to set it up on my radio. i have a baofeng uv-5r which i know people have opinions about but its what i have right now. is CTCSS the thing that makes the repeater actually open up? like do i need a specific tone for each repeater? where do i even find out what tone the local one uses?

sorry if this is a dumb question, just trying to figure out why nobody can hear me when im pretty sure im hitting the machine

Not a dumb question at all, this trips up almost everyone when they're starting out. So basically yes, CTCSS (some people call it PL tone or just "tone") is a continuous subaudible tone that your radio transmits along with your voice. The repeater is set up to only open its transmitter when it hears the correct tone — otherwise random noise or someone on a nearby frequency could key it up accidentally. So if you're transmitting without the right tone, the repeater literally doesnt know youre there, which is exactly what youre experiencing.

To find the tone for your local repeater, the best place to start is repeaterbook.com — just search your area and it'll show the input/output frequencies and the required CTCSS tone right there. Once you know the tone, on the UV-5R you gotta go into the menu and look for something like "R-CTCS" or "T-CTCS" — T-CTCS is what you want for transmit. Set that to the correct tone and you should be good. Most repeaters around here use somewhere between 88.5 and 162.2 Hz, theres a standard set of tones so dont worry about it being some weird number.

Once you get the tone right and key up, give it a second after the repeater opens before you start talking, then just say something like "[your callsign] listening" and see what happens. Good luck, youre almost there.

yeah repeaterbook is def the move for finding tones, thats how i figured it out too when i was starting. one thing i'll add — some repeaters have no tone required at all, they're "carrier squelch" so if yours isnt listed with a tone you might be fine without one. but if it IS listed and you dont have it set, yeah youre basically invisible to the machine. the UV-5R menus are kind of a pain to navigate honestly but once you find the right menu item its pretty straightforward