Well, actually not so useless.GPS is useless for antenna alignment - stick with the compass, and make sure you have taken the specific magnetic declination for your area into account...
Well - not entirely useless, except for plotting co-ordinates - and these are essential without having to mention.Well, actually not so useless.GPS is useless for antenna alignment - stick with the compass, and make sure you have taken the specific magnetic declination for your area into account...
There are equipment that surpass any interference my mean of GPS, so, GPS is very very usefull, actually.
Well, Here appears to be a success story;Thks for sharing Frank.
That´s the way we have been trying but no luck, we just installed those last week, we will try again this week with one guy on each tower; we were usng googleearth , gps , compass to pre-align dish on point A and we were only moving dish on point B but I guess point A was not properly aimed. Those dishes has 4º of beam width and for a 52 Km , 1/4" here means probably houndreds pf yards there .... we´ll see.
Any more ideas guys ....
Any calkulators like this that is available online?There are some very good link calculators that take into account your geographical location and give you uptime calculations for the whole year, and also give "worst month" uptime which can be substantially different.
Any ideas on how to improve this?-78dBm seems rather low for 50 k and 4ft dishes with an XR5, we have a 20km link with far less favourable link path (hill midway impinges on fresnel a bit, heights ASL 90/200 mtrs) using two RIC/522's and SR5 we get -57dBm, no 4ft be-hemoth dishes required!After a few hours, a lot of patience with a guy on each tower, struggling with the aiming of the 4ft. dishes, the link was a success, 54Kms, linked at 24-36Megs, with a TCP throughput of around 15M-16M UP and DN. -78dBm Signal Strength, 21-22 SNR, 70-71 CCQ.
If you need any help - feel free to ask... I've gotten fairly proficient in RMW over the past year of using it, and it's almost always helped me improving the quality of my links...
Pre-prepared antenna pattern files and free topographical data can be a bit of a schlep to find on the web, but there are some good 'Getting started' guides like here:
and the main site is here:
Although topographical data can be downloaded automatically by the software when it's needed, it's best to download it and work from your hard drive: