John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
 ·CenturyLink
| reply to Book
Re: Any tricks for determining los?
said by Book  :what tower height did you plug in for the "b" side? I calculated from ground height...no additional elevation.
What height would I have to go on "b" side to make it work? I would suggest a 60 footer, since I do not know what else is in the way, such as trees, etc. on the hill.
The calculator says that the radius at 0.5 miles (the obstacle in question) is 16 feet for 0.6 zone clearance at 5800 MHz.
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A is A |
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Book
Premium
join:2004-05-24
Shepherd, MI
| OK, I'm planning a 100' tower on the "B" Side. Thanks so much for the info people. I've tried to use some different mapping programs like Keyhole and Worldwind trying to determine this but couldn't.
Thanks for all the help John! What mapping programs do you use? |
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ejd91717
join:2001-01-10
Summerville, GA | reply to John Galt
LOL good point. I can do it in GA when its wet outside. But maybe i need to wait for it to dry out:D |
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tallen03
join:2005-02-02
Ozark, MO | reply to Book
Book: Where do you get a 90' bucket truck and how much does it cost? I looked into getting a 90' lift and it was going to be about $750/day. |
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rsa0
join:2003-01-25
Birmingham, AL | reply to Book
Try to do a link budget before you spend the money. At this frequency your issues may be greater than only the LOS.
PM me if you need more details. |
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TalkRadio
join:2004-06-23
Valrico, FL | reply to John Galt
John Galt - very impressive graphics all over the place there! Would you mind sharing how you created them? I geocache all the time and have never seen such maps and charts. They would certainly be useful. Thank you. |
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Book
Premium
join:2004-05-24
Shepherd, MI
| reply to Book
The local Paint guy has a 90' Bucket Truck that we contract for $85/hour.
According to Trango's Calculator, a panel on each end will do it. What concerns do you have rsa0? We have a 20 mile and 26 mile link that work flawlessly at this frequency however their isn't the difference in elevation that their is here. |
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John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
·CenturyLink
| reply to TalkRadio
said by TalkRadio :Would you mind sharing how you created them? And others...
I use Topo USA 5.0:
»www.delorme.com/topousa/
and I use TopoZone Pro:
»www.topozone.com/
I run these programs on a 21" monitor at 1920x1600 and I use Snagit to do the screen captures:
»www.techsmith.com/products/snagi···ault.asp
Then I do post-processing in Paint Shop Pro:
»www.corel.com/servlet/Satellite?···25487586
Then it is back to Snagit Editor to add annotations and arrows.
If I need to add other "objects" I use CorelDraw:
»www.corel.com/servlet/Satellite?···22690654
I also use Google Earth Plus and Keyhole...
It's all just that easy....!
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A is A |
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TalkRadio
join:2004-06-23
Valrico, FL | It's probably a bit more than what I need for quick geocaches nearby the house, but spectacular nonetheless!! Thanks for the quick response and explanation. |
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Andrew J
Premium
join:2001-11-09
Lancaster, PA
clubs: | reply to Book
Use a laser pointer and have the guy on the other end looking for the red beam smoke a bunch of cigarettes.
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Best Team. |
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KevinG0
join:2005-08-08
Sykesville, MD
| reply to Book
RadioMobile does this sort of link calculation. Works great, and (best of all) it's free! There's a bit of a learning curve, but once you get used to it, you can do some surprising things with it.
»www.cplus.org/rmw/english1.html |
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