Thanks.djscrizzle wrote:Agreed. the KISS rule is typically the best rule to follow in mission-critical systems, such as warning sirens.Adam Pollak wrote:If you have the means to and the money, and if the siren is going to be regularly used as an active and meaningful warning device, I would do nothing other than radio activation or get a regular land line.
Doing any internet-based systems just adds on more and more methods of possible failure. If there is any failure along the way, there is not much that anyone will care to fix it all that fast, or even be aware of it.
If a land line goes down, the phone company is well aware of it and in addition to the phone systems having battery backups, they are also a repair priority. If you can see what the most-basic phone service you can get is, I would definitely go with that if the money is available to do so.
Also, Robert, Have you tried pointing a Yagi antenna towards Denver OEM's location and getting their siren activation signals? Yagis are crazy good at direction signal pickup. Point the antenna towards your target, Hook up a scanner and a CATV/antenna amp (good from 5-900MHz with 10-20dB amplification) tune a scanner to the frequency used, and listen at test time.
I was hoping to run (bury) an extension line to the siren.
But do not see how that can work with an IP phone system.
Another idea is to buy a Whelen radio receiver.
When the City of Aurora sounds their Whelen siren closest and west of us, our receiver would intercept their signal and operate the 2t22.
But Aurora has sounded a number of false warnings.
And they do weekly silentests. (I do not yet know enough if the receiver can discriminate between a weekly silent test and a tornado warning.)
Regarding false warnings, there was a tornado just south of Aurora's southern border.
They sounded their entire system.
We heard the tornado sirens though it was clear blue sky where we lived.
"Lassie" (2t22) was howled for the first time in her life last Sunday!
But there was no threat to our huge trailer park. (I would not have sounded the false warning.)
Naturally, I, a tornado chaser, was called by a mountain hospital to deliver a blood specimen to Denver and missed everything (A tornado, no doubt visible from our house, caused some damage a few miles east.)
While heading to the hospital in the morning, I told my wife about the clouds with "good potential" I observed building west of Denver.
