Uniden ATLANTIS 155 English Owners Manual - Page 16

If you decrease the squelch level to minimum, it lowers the "Squelch Gate"' to the extent that weak signals can get through. If unwanted weak and noisy signals are getting through, increase the squelch level (raise the "Squelch Gate") to a medium level. Now only medium and strong signals get through. S1 - minimum squelch S2 - medium squelch S3 - maximum/tight squelch 1. Press SQL UIC. SQL displays and the current squelch level flashes. 2. Press SQL UIC while the squelch level displays to change the squelch level to the next step (0 3, then repeating again from 0). 3. After 2 seconds the unit exits the squelch setting. TRANSMITTING AND RECEIVING Selecting Channel Modes The radio uses U.S., Canadian, and International Marine channels (modes). Press and hold SQL UIC to change modes. Each time you press and hold SQL UIC, the mode indicator changes (US - United States; CAN - Canada; INT - International). Refer to page 28 for a list of the available channels and corresponding frequencies. E-16 Uniden Atlantis 155 Owner's Manual