Noting pips on 6920. Period seems to be 3 seconds. Either props are sucky, or there are gaps in the timing.
No time to chase //s as I have to head out to work.
Seems to have gone off around 1448 as I write this.
And back on at 1454.
They have used 3 second timing before, but typically that is with a shorter pulse, about 0.063 sec. the other possibility is that you were on a frequency that was part of both networks, and you heard both of them. Typically there are one or two frequencies in a set that have both networks active on them, so you hear an odd spacing. If youa re hearing about a 3 sec spacing with the 0.125 sec pulse I would bet this is the case, particularly if you hear the shorter spacing on one freq, and longer spacing on another.
I was not at home this morning, so could not grab anything on these today.
T!