Some interesting results of pigtail testing.....
Link is 7.9 miles. There is eyeball LoS with no fresnel zone
incursions. Antennas are V-pol. Calculated link is -63db.
Client end:
RouterBoard 230 with MikroTik 2.9.13
SR5 card set to default TX power
u.fl to N-female pigtail
5 ft LMR-400 jumper
Hyperlink HG5827G 27db grid
AP end:
RouterBoard 230 with MikroTik 2.9.13
SR5 card set to default TX power
u.fl to N-female pigtail
5 ft LMR-400 jumper
Hyperlink HG5817P 17db sector
AP reports client at -71 with -100 noise floor
Test u.fl pigtails new in wrapper.
#1 AP reports client at -71
#2 AP reports client at -82
#3 AP reports client at -74
#4 AP reports client at -72
#5 AP reports client at -71
Obviously, not all new u.fl pigtails are the same.
Test mmcx pigtails new in wrapper.
#1 AP reports client at -73
#2 AP reports client at -74
#3 AP reports client at -74
#4 AP reports client at -75
#5 AP reports client at -73
Less spread on the mmcx pigtails. The best mmcx pigtail seems to about
as good as an average u-fl pigtail. However, this could be an artifact
of the SR5 cards mmcx port.
Draw your own conclusions, but I will no longer trust u.fl pigtails out
of the box. Careful sorting of new u.fl pigtails could improve signal
quality by 3-4db. At a client end this might not be worth it. At the
AP, IMHO, it is well worth the time and effort.
--
Blair Davis
AOL IM Screen Name -- Theory240
West Michigan Wireless ISP
269-686-8648
A division of:
Camp Communication Services, INC
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