Factor Conversions - Wilson Electronics 801105 Installation Manual

Factor Conversions

Using the table below, find and circle the appropriate decibel (dB) numbers that correspond
to the equipment in your particular system. Be sure to choose your numbers from the
appropriate frequency column based on the service you receive (iDEN, Cellular or PCS).
Antenna Factor (AF)
Low Profile (inside)
Dual-Band Panel (inside)
Dual-Band Dome (inside)
Dual-Polarity Dome (inside)
Yagi 806-939 MHz Cellular (outside)
Yagi 800-900 MHz Cellular (outside)
Yagi 1800-1900 MHz PCS (outside)
Cable Factor (CF)
20' RG 58
20' Wilson 400
30' Wilson 400
50' Wilson 400
100' Wilson 400
Splitter Factor (SF)
Tap Factor (TF)
(depends on model - refer to tap label)
Use the following formula to calculate your Signal Strength (S). Write in your numbers
as appropriate. Be sure to account for the length of all cable, inside and out. Add up the
numbers for all taps and/or splitters (if you are not using any, enter 0). Remember, AG and
AF will be positive numbers; OSL, CF, TF, SF and S will be negative.
OSL + AG
Once you have calculated your signal strength, use the graph on the following page to
determine approximate coverage distance. See below for a sample calculation.
Sample Signal Strength and Coverage Calculation
This example assumes an OSL of -90, use of a 60 dB Cellular Signal Booster, an 806-939
MHz Yagi Antenna and a low profile Inside Antenna with 100 total feet of inside and outside
9913 cable with no splitters or taps.
OSL -90 (always a negative number) found on cell phone in test mode
AG +60 gain
AF +16 dB gain (+13 dB for the Yagi Antenna and +3 dB for the low-profile antenna)
CF -7 dB loss
SF 0 (none used)
TF 0 (none used)
Formula: -90 + 60 + 16 + -7 + 0 + 0 = -21
With a signal strength of -21, coverage distance would be
approximately 120 feet from the Inside Antenna.
Contact Wilson Electronics Technical Support Team with any questions at 866-294-1660
or email: tech@wilsonelectronics.com. Hours: 7 am to 6 pm MST.
+ AF + CF
Frequency
iDEN Cellular
851 869
+3 dB +3 dB
+7 dB +7 dB
+2 dB +2 dB
+5 dB +5 dB
+13 dB +13 dB
+10 dB +10 dB
+14 dB +14 dB
-4 dB -4 dB
-3 dB -3 dB
-3 dB -3 dB
-4 dB -4 dB
-7 dB -7 dB
-3 dB -3 dB
-6/-10 dB -6/-10 dB
+ SF + TF
PCS
1930
+3 dB
+7 dB
+2 dB
+5 dB
+13 dB
+10 dB
+14 dB
-7 dB
-4 dB
-5 dB
-7 dB
-10 dB
-3 dB
-6/-10 dB
= S
12