nanog mailing list archives
Re: California fires: smart speakers and emergency alerts
From: Chris Boyd <cboyd () gizmopartners com>
Date: Thu, 26 Jul 2018 12:31:31 -0500
On Jul 26, 2018, at 12:09 PM, valdis.kletnieks () vt edu wrote: Do those use a frequency band that's suitable for cellphones to monitor (antenna size, power, etc)? Because your best chance of getting my attention in an emergency is to make my phone start shrieking.
VHF, on 7 frequencies: 162.400 162.425 162.450 162.475 162.500 162.525 162.550 That’s about 1.85 meter wavelength, so a quarter wave antenna would be pretty large. I’m sure the RF engineers can come up with a way to listen effectively without a huge antenna. —Chris
Current thread:
- Re: California fires: smart speakers and emergency alerts Sean Donelan (Jul 26)
- Re: California fires: smart speakers and emergency alerts Brian Kantor (Jul 26)
- Re: California fires: smart speakers and emergency alerts Sean Donelan (Jul 26)
- Re: California fires: smart speakers and emergency alerts Aaron C. de Bruyn via NANOG (Jul 26)
- Re: California fires: smart speakers and emergency alerts Seth Mattinen (Jul 26)
- RE: California fires: smart speakers and emergency alerts Naslund, Steve (Jul 26)
- Re: California fires: smart speakers and emergency alerts Seth Mattinen (Jul 26)
- Re: California fires: smart speakers and emergency alerts valdis . kletnieks (Jul 26)
- Re: California fires: smart speakers and emergency alerts Nate Metheny (Jul 26)
- Re: California fires: smart speakers and emergency alerts Chris Boyd (Jul 26)
- Re: California fires: smart speakers and emergency alerts James Downs (Jul 26)
- Re: California fires: smart speakers and emergency alerts Stephen Satchell (Jul 26)
- Re: California fires: smart speakers and emergency alerts Seth Mattinen (Jul 26)
- Re: California fires: smart speakers and emergency alerts Chris Adams (Jul 26)
- Re: California fires: smart speakers and emergency alerts Sean Donelan (Jul 26)
- Re: California fires: smart speakers and emergency alerts Brian Kantor (Jul 26)
- Re: California fires: smart speakers and emergency alerts Chris Boyd (Jul 26)
- Re: California fires: smart speakers and emergency alerts Sean Donelan (Jul 26)
- Re: California fires: smart speakers and emergency alerts Lou Katz (Jul 27)
- Re: California fires: smart speakers and emergency alerts joel jaeggli (Jul 28)
- Re: California fires: smart speakers and emergency alerts Mike Hammett (Jul 30)