06-30-2010 5:02 PM
07-18-2010 9:21 AM
Wow, Gilsson answered! Makes me want to buy a GPS antenna even if I don't need it! Thanks Gilsson, great customer service.
07-19-2010 1:55 PM
Thanks for the response, Glisson! I ordered my antenna with 25ft of cable - and the extra 10 foot extension today!
Hope it does the trick. My Microcell has been rock solid for several weeks now, but I do have it in my basement. I've noticed after a power outage, it's taking an increasingly longer amount of time to get a GPS lock. Now, today after a failure of my UPS (of all things!), I can't get it to GPS lock at all. So, hopefully an antenna will do the trick.
07-19-2010 2:36 PM
YEAH!! SUCCESS! After adding the antenna, plus Rreconfigured the set up so that the MicroCell was the first in the chain. Rebooted and waited 20 minutes. Then Viola! It works! Still don't get 5K square foot coverage but hey at least I can now use my cell phone in my house!!!
Thanks for the suggestions.
PS I spoke with the tech guys from ATT and I mentioned that external antenna worked. They said that they officially couldn't "recommend" it but that they have heard reports that it works.Go figure. They'd rather have me return the MicroCell rather than have try out a $20 item.
07-22-2010 8:28 AM
I just got your antenna (25ft cable) and 10 ft. extension cable - 35 ft total length. I'm about 10ft shy of where I need to reach. Can I buy another 10ft extension and still expect reasonably good reception with the antenna, or at that distance (45ft), do I need to switch to the low loss cables you mentioned in your post?
I'm already $45 in on this antenna project (including shipping) plus the $150 I spent on the Microcell to begin with, and I don't really want to turn this into big $$$.
07-23-2010 7:30 AM
Excuse my confusion...
But how will this antennae help. I thought that everything goes through the router/broadband now.
Does it help with the data
07-23-2010 7:34 AM
07-23-2010 9:11 AM
So I guess my next question is - does the microcell need a constant or continuous GPS lock to operate properly?
Sorry for my ignorance on this.
07-23-2010 10:01 AM - edited 07-23-2010 10:04 AM
They *claim* it needs to be continuous. It probably doesn't need to be literally continuous, but it certainly needs to be there to start it up, and you don't really know when it's going to want to check while it's working.
My perspective is that it's probably a lot more trouble to provide it with sporadic GPS coverage (say, by arranging a really long power / network cord and moving it where it can "visit" the sky every once in a while) than it is to either put it or an external GPS antenna where it can see the sky.
It's also possible that they're using the GPS signal as a convenient source for a time / frequency reference (the frequency tolerances for UMTS are too tight for an undisciplined crystal source) as well as for positioning. They're using NTP for time, but it may not be accurate enough. I don't know enough about UMTS to be 100% sure of any of this, however.
07-23-2010 3:16 PM
Yes, you can add another 10-feet extension without any problems. We estimate the dB loss on our RG174 cable is about 0.3 dB/feet of cable + dB loss on the connectors. Knowing our patch antenna can deliver 28dB of gain at the LNA, you will have sufficient dB gain after running 45 feet of cable.
Please let us know if we can be of further service. Thanks !
07-23-2010 3:25 PM
GPS position (coordinates) is required for all wireless towers. FCC rules require that phone companies to provide location of all handsets in order to trace 911 calls. The GPS location can be provided by activating the GPS chip inside each chipset or it can be determined by triangulating the signal using different radio towers.
07-23-2010 4:12 PM
07-24-2010 6:37 AM
That's what I was told by the rep at the ATT store - that it only needs placed near window for GPS during the initial power up/register/boot process. I guess that's why I've been confused about this entire thread. Thanks for your help people.
07-24-2010 6:56 AM
07-24-2010 7:54 AM