Gents & ladies,
I have a difficult question for the list. I was testing my 1st
routerboard/mikrotik ap this evening with terrible results. Let me give
you the rundown of what I have and what has happened.
Setup:
1 mikrotik routerboard 532 combo
3 cm9 minipci radios configured to 18 dbm via mikrotik
17.5 feet of lmr-400 from each radio to...
3 teletronics 19dbi horizontally polarized, 8 deg vertical beam width,
120deg sector antennas
See the antenna here: http://www.teletronics.com/tant24sector19dbi.html
My problem is that no where within 2 miles of the antennas can I get a
signal better than -85 db. A senao in a rootenna mounted 50 ' away
through a steel roof and pointing the wrong direction gives me -70 db on
my laptop card?!? Is there something I'm missing.
One other thing which might be the cause is that while I was setting up
the mikrotik/routerboard I activated the 3 cm9 radios not realizing that
they were set for the 5 Ghz band. They were probably like that for an
hour until I got to that part of the setup. Perhaps something is wrong
now or are the cm9's forgiving?
Another thought I has is that the teletronics antennas are just not very
good. Has anyone else tried them? Results?
Is there a way to measure conducted output power at the antenna end of
the coax? I could verify the radio output that way. Or a microwave
field strength measurement I can do (spectrum analyzer?)?
Any ideas guys
Jason
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