[EAS] Ira's comment
Lowell Kiesow
lkiesow at kplu.org
Mon Apr 4 12:08:08 CDT 2011
When emergencies hit a widespread area, it is possible that boxes
using CAP converters will choke on the sheer volume of messages,
unless the converter does its own message filtering. If it doesn't,
the system will be tied up while the converter "plays out" the alert
audio for everything it gets from the server. If a bunch of alerts
fly all at once, it may take the converter too long to play all of
them out. By contrast, when CAP is built into the box, it can
quickly examine an alert, and ignore it if doesn't fit the watch
list, and then go on to the next message. Of course, there will be
those stations who only care about meeting the absolute minimum of
part 11, and a converter will probably do that.
If nothing else, in many places, CAP will cause more simple minded
boxes to burn through paper tape by the yard. Boxes that rely on
paper for logging may cause more than a little frustration,
especially if it logs everything it hears. Here in Washington, we
have 39 counties, and a bunch more cities, that all send tests on a
regular basis (training is good). Thankfully, there are units
available that can filter out test messages that I don't want without
also filtering out alerts that I do want for those areas.
Lowell Kiesow, Chief Engineer
KPLU 88.5, KVIX 89.3, KPLI 90.1
www.kplu.org www.jazz24.org
More information about the EAS
mailing list