ka3jjz
Wiki Admin Emeritus
No sooner that I read Tinear's comment on MEMA testing, I hear the same kind of thing on 139.9625; and whoever is doing the 'testing' is running the deviation too high; at one point it sounded just like Baltimore city's 154.31 xmtr 
yeecchhh In fact, I think we should call it the 15431 syndrome; it's certainly descriptive. The echos were probably the result of an audio loopback from a receiver in the same room (we've seen this happen on a few ham repeaters from people that didn't know better). A deviation meter or spectrum analyzer is a much better tool for this...
An observation; I know that state and federal systems aren't necessarily under the same jurisdiction, but from an interop point of view, I'm surprised that they're not testing narrowband/P25 as the feds are now supposedly doing.
73s Mike
yeecchhh In fact, I think we should call it the 15431 syndrome; it's certainly descriptive. The echos were probably the result of an audio loopback from a receiver in the same room (we've seen this happen on a few ham repeaters from people that didn't know better). A deviation meter or spectrum analyzer is a much better tool for this... An observation; I know that state and federal systems aren't necessarily under the same jurisdiction, but from an interop point of view, I'm surprised that they're not testing narrowband/P25 as the feds are now supposedly doing.
73s Mike
