ORIGINAL: EASYTIGER
Several of the receivers in question were the R148, I checked today.
And I FLEW again today, in the same place, with no problems.
I'm stumped on this one. But I don't want to do a whole change in my operations because of one day's problems just yet....
I also don't feel a need to convert over to PCM, like Enrique, I have had no problems(till the other day!) with PPM...
Sounds to me like you need a scanner... The ICOM IC-R5 will do it:
http://www.icomamerica.com/products/receivers/r5/
Bob