User's Manual Part 1

3-7
As a reference the following table gives estimates of the signal loss for some RF
barriers.
Average Signal Loss of Common Building Materials
RF Measurements and Site Survey
Before designing an LG
Cell
system, one should go to the site and measure the loss
characteristics of the building. To determine the amount of coverage per antenna,
the best method is a test of RF propagation, which you can do on-site with a test
transmitter and field strength meter.
While at the site, one can use the following Site Survey Questionnaire to document
site specifics.
Site Survey Questionnaire
You can use the LGC Wireless Site Survey Questionnaire to help design your
LG
Cell
system. A sample questionnaire follows. The following information is
needed when you walk a site:
Partition Type Loss @ 815 MHz
Metal wall 26 dB
Aluminum siding 20 dB
Concrete block wall 13 dB
Foil insulation 4 dB
Concrete floor 15 dB
Sheetrock 1.4 dB