RE: [smartBridges] Disappointing Signal Strength

[RFMS]

It is very probable you are experiencing a severe case of multipath.  What polarity are you using and if it is  horizontal, change it to vertical before doing anything else.  This path is a likely candidate for ducting and also multipath problems, so use as little gain on the antenna systems as you can get by with, while maintaining a good fade margin.   Ron -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of Oliver Leamy Sent: Wednesday, June 11, 2003 3:21 PM To: [EMAIL PROTECTED] Subject: [smartBridges] Disappointing Signal Strength Hi, it�s me again.  The pest from the West.   Today, in the beautiful sunshine (a rare occurrence in West Ireland) I tried to do a link between one of the islands and the mainland.  I positioned a 20.5dbi dish on the harbour wall, and on the island we had a similar dish mounted on the wall of a house which was about 70-80� above sea level.  The distance between the two was about 3 miles.  Cable lengths were about 5� from AirNic (on the Harbour) and the AirPoint (on the island) and only two connectors (one at the antenna and the other on the AirNic (or AirPoint)).  The SB Airmonitor program at the AirNic end showed a signal strength of 20% but it jumped intermittently to 40%.  It also showed a link quality of 75%.  When trying to download pages from the web, it was very bad.  Also, the Windows status window showed only one bar, and reported poor signal quality.   While I could go up to a 24dbi antenna, I am not inclined to go that route since I THINK that we should have got better results.  Any ideas, feedback �..   Oliver Leamy   Ogenek Teoranta, Ballingeary, Macroom County Cork +353 (26) 47808 ; +353 (86) 8337664

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