there is currently some unknown interference on approach frequency 126.6. i know it's not on my end because they've discussed it on the frequency. ill definitely take a listen sunday and see if i can find anything else out. keep in mind, a lot of the frequencies are VHF and UHF so atc is being transmitted simultaneously on both freq's so it makes it difficult to find the right squelch setting. thanks for the heads up and a big thanks for listening!