Check this out. Just with the rubber duck and the base sitting on a shelf in the house I got over 1/4 of a mile. of course there is no foilage on the trees right now.
Check this out. Just with the rubber duck and the base sitting on a shelf in the house I got over 1/4 of a mile. of course there is no foilage on the trees right now.
It came with a 6Dbi 900 mhz ground plane, and 20m of coax. the coax has 3db loss. so i am only outputting 2 Watts ERP when under 247 we are allowed 4 Watts. plus the base antenna that comes with it is a chincy POS. Just a mobile cell antenna over a groundplane. I like fiberglass antenna's.
My answer to that problem? I got one of these...
http://www.wlanparts.com/product/KP-20/KP20_900MHz_92dBi_OmniDirectional_Antenna.html
Now I will have the legal 4 watt ERP output 🙂
I have not set up the base antenna yet. I estimate with the base setup i'll make it to the ends of town.
the phone uses FH-TDD-CDMA
Frequency Hopping, Time Division Duplex, Code Division Multiple Access.
the base outputs 900mW the handset 600mW On 900 Mhz ISM Band
https://gullfoss2.fcc.gov/oetcf/eas/reports/GenericSearch.cfm
FCC ID: NI3-SN-920U
Grantee Code: NI3
Product code: -SN-920U
Ahhh, yes. Good 'ole Engenius. We setup a couple of these at work a few years ago. We have a hard time ordering parts with our sub-par purchasing department, so we were lucky to get our hands on the phone systems. Actually, the first one we received was a demo unit that we got to keep. I don't know how quickly we got the second unit. We had a unit on both ends of our facility (a theme park). One antenna was on a 50 foot tower, the other on a ~75 foot tower. The included coax wasn't long enough, so we had to extend it with a length of Belden 9913. Needless to say, our units didn't perform as well as yours is performing.
I had to remove the antenna connector from the base unit and replace it with a panel-mount jack of something we had. I think the base unit had a reverse-thread TNC or something. I think the base antenna is something off-the-wall as well, but I can't remember. We're not using the units right now, though I'd like to get them up and running again sometime. I have some unused 1/2" hardline running up both towers now, so I'd like to try and use that instead of the included coax and 9913.
Chris
Keep the coax under 60ft. Better yet get a NEMA enclosure from a WiFi parts suplier and mount the phone base right up at the base of the antenna. rune power and telephone up to the base. if you have it 50ft up then use a 6dbi or less gain antenna and not that crappy cellular antenna over a ground plane. get a real fiberglass omnidirectional. USE LMR-400 or better. make sure you get an antenna that has at least a 3 degree electrical downtilt.
You will be amazed what these little improvements will do. of course lots of metal and brick will kill a low power microwave signal very quickly.
I can't advise furthur w/o knowing more.
Thank You,
Rev. Robert P. Chrysafis
Universal Life Ministries
http://www.ulc.org
Moderator Hunterdonfree
http://groups.yahoo.com/group/hunterdonfree