Check the deviation levels of your voice and the PL tone (if used), and verify that they are compatible with the repeater's receive bandpass. In some radios- Alinco and Icom are typical- the PL tone is way too high in deviation, and gets distorted when voice peaks push the total deviation into limiting. When that happens, the repeater receiver mutes when it can't detect a valid PL tone. This is called "talk-off."
One of the users of a local repeater has an unusually high-pitched voice, and the controller would occasionally mute the audio while he was speaking, thinking it was detecting a DTMF control tone. Does this problem occur with other users? If not, your own radio may be off-frequency, or over-deviating. It is also possible that your PL tone is weak or distorted, and the repeater's decoder can't maintain a good lock on it. Further investigation of this problem is needed. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of mimomeg Sent: Sunday, June 06, 2010 7:56 AM To: [email protected] Subject: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance
