For whatever reason, the receivers that they use in some of these don't seem to be "modern" at all. They frequently take an excessively long time to get a lock.
On Monday, February 8, 2016, Eric Kuhnke <[email protected]> wrote: > Modern GPS receivers work surprisingly well, if not very accurately, from > inside a single floor wood framed house... My oneplus one will pick up 6 > satellites while standing in a central hallway 15'+ from any window. > Should be accurate enough to get a location within 75'. > > All bets are off if it is a concrete framed apartment building or > something like that. > > I still find it amazing that anything works at -162 RSL. Thanks to tiny > channel size and very basic modulation. > On Feb 8, 2016 6:46 PM, "Bill Prince" <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> Canopy NAT seems to break it with regularity. It might also fail if the >> GPS location that it reports is not within a 1/4 mile of where the customer >> address is. >> >> Also requires enough GPS (like near a window) to get a GPS lock. >> >> bp >> <part15sbs{at}gmail{dot}com> >> >> >> On 2/8/2016 3:34 PM, Ken Hohhof wrote: >> >> What are the typical reasons for these not to work?� From the user >> guide it appears to use IPSEC, so I assume anything that prevents a VPN? >> � >> Verizon support told the customer they needed a Class A address.� >> WTF?� Did they maybe mean it *can't* be a class A address?� Customer >> uses 10.x.x.x addresses internally, behind Cisco ASA firewall (which I >> don't manage). >> � >> I do see some udp/500 and udp/4500 packets, I think that means something >> is using UDP for IPSEC NAT traversal? >> >> >>
