Incoming generated [Apr 26 2019]

0169-EX-CN-2019 Correspondence

AeroTEC Inc.

2019-04-26ELS_228577

From: Brad Irish To: Nimesh Sangani Date: April 26, 2019 Subject: Additional Information Request ---------------------------------------------------------------------------------------------------------------- Message: Link Budget Calculations Equipment Part Description Gain or Loss L1/L2GPSA-T Active Roof Antenna 40dBm L1/L2GRRKPA-T Passive Antenna. dBi depends on angle 3 dBi to -6 dBi RRKAMP Line Amplifier 30 dBm RG214/U Cabling 10.3 dB per 100ft Formulas The formula for the maximum EIRP in dBm as given in NTIA Redbook 8.3.27.f: P¬¬_Tmax=P_R+20 log_10??f+20 log_10??(30+d)-27.55? ? Where: P¬Tmax is the maximum permissible EIRP in dBm PR is the power received at 30 meters from the building (-140 dBm/24 Mhz) f is the frequency in MHz d is the distance between the radiator and the closest exterior wall of the building in meters. The formula for the system’s radiated broadcast power in dBm is: R_p=G_R+L_C+G_A+G_P+R_A Where: Rp is the radiated power in dBm GR is the gain provided by the roof antenna LC is the loss caused by cable and adapters GA is the gain from the reradiating amplifier Gp is the gain provided by the passive antenna RA is the average receive power for a given frequency in North America  


Document Created: 2019-04-26 14:34:09
Document Modified: 2019-04-26 14:34:09
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