26 Jul
2018
26 Jul
'18
1:31 p.m.
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