GPS Source, Inc. Repeater Budget Calculator
Change the values in the yellow
boxes to calculate required readings
-140 dBm at 100 feet from the building to meet
NTIA regulations
Receive Ant Gain
Ant Cable Insertion Loss
Repeater Amp Gain
Repeater Ant Gain
(Best Case)
Range in Feet
Repeated Signal Power @ Range In dBm
Total Signal Power @ Range in Watts
GPS Carrier Frequency
(MHz)
Free Space loss with
Isotropic Antennas
Total System Gain
Range in Miles
Effective Radiated Power dBm
Effective Radiated Power (dBW)
Avg Receive Power in dBm
North America
Reference Dipole Gain
Transmitted Power (W)
Range in Kilometers
Effective Isotropic Radiated Power (dBm)
Effective Isotropic Radiated Power (dBW)
2.15
Typical value @ L1: -130.0 dBm
@ L2: -127.5 dBm
Range in Meters
Effective Radiated Power (W)
The browser does not support JavaScript. Please access the web page using another browser.