you guys are comparing a cell phone which uses gps and cellular and wifi triangulation to a highly accurate GPS used for timing purposes
On Tue, Feb 9, 2016 at 7:39 AM, Jaime Solorza <losguyswirel...@gmail.com> wrote: > cell booster or gps booster? > > Jaime Solorza > Wireless Systems Architect > 915-861-1390 > > On Tue, Feb 9, 2016 at 8:15 AM, Sam Kirsch <sam...@plexicomm.net> wrote: > >> Pull out a GPS App on your phone and make sure you can actually read the >> satellites from behind the window (I used 'GPS Test' on Android). We had >> to install one of these boosters and were troubleshooting why the damn >> thing wasn't working when I noticed that my phone GPS receiver was working >> in rooms where the windows were open and not working in rooms where the >> windows were closed. Building management didn't even know they'd purchased >> the windows with RF film. >> >> >> >> *-- Samuel Kirsch, Network SupportPlexicomm - Internet Solutions | >> www.plexicomm.net <http://www.plexicomm.net>* >> *Office: 1.866.759.4678 x109 <1.866.759.4678%20x109> | Fax: >> 1.866.852.4688 <1.866.852.4688>* >> *Emergency Support: 1.866.759.9713 <1.866.759.9713> | >> sam...@plexicomm.net <sam...@plexicomm.net>* >> >> >> >> ------ Original Message ------ >> From: "Adam Moffett" <dmmoff...@gmail.com> >> To: af@afmug.com >> Sent: 2/9/2016 9:50:42 AM >> Subject: Re: [AFMUG] Verizon "network extender" >> >> >> It might not be just a matter of getting the location. If they use the >> 1pps clock from GPS to calibrate an oscillator before they start >> transmitting, then it would legitimately take 20-30 minutes. >> >> Telrad BTS's are like that too. Pisses me off if I ever have to reset >> the power. >> >> >> On 2/9/2016 12:12 AM, Jason McKemie wrote: >> >> 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 < <eric.kuh...@gmail.com> >> eric.kuh...@gmail.com> 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" < >>> javascript:_e(%7B%7D,'cvml','part15...@gmail.com');> 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? >>>> >>>> >>>> >> >
