Answer Calculations from PE commissioned by AT&T: the GQ2410-06621 antenna does have 10 total input ports, however, our analysis of the AT&T DAS node includes only the frequencies and power levels at which AT&T proposes to operate. For this site, three Ericsson radio units are proposed to be installed - two Model 2203’s, which will operate in the PCS (1950 MHz) band, and one Model 2205, which operates in the unlicensed 5 GHz band. Each unit is connected to the antenna by two ports, and the four remaining CBRS band ports are not proposed to be used. As the report states, the maximum effective radiated power in any direction would be 85.4 watts. This ERP value includes the antenna gain, so it would be the output value of the calculator you linked to, rather than the input. We calculated the ERP as follows:
Each Ericsson Model 2203 has two ports, each with a maximum Transmitter Power Output (TPO) of 5 watts. The maximum TPO in the PCS band is therefore 20 watts (13 dBW).
The connections between the Ericsson radios and the Galtronics antenna result in power losses that we estimate to be 0.55 dB.
The maximum gain of the GQ2410-06621 antenna is 8.9 dBi (6.75 dBd) in the PCS band.
The ERP in the PCS band can therefore be calculated as 13 dBW - 0.55 dB + 6.75 dBd = 19.2 dBW = 83 watts.
Unlicensed operation in the 5 GHz band is limited to an ERP of 2.4 watts in order to comply with FCC Title 47 §15.247.
Original question: For their 5G rollout, AT&T plans to erect a small cell site in my neighborhood. Based upon information provided by AT&T, the Galtronics Model GQ2410-06621 will be installed.
Looking at the specifications sheet for the Galtronics Model GQ2410-06621, it has 4 ports for AWS/PCS/WCS Band at 1695-2360 MHz, where the maximum power per port is 100 Watts. This Galtronics model also has 2 ports for 5 GHz WiFi (2x ports for U-NII Band 5150-5925 MHz), where the maximum power per port is 1 Watt.
My question is, how does one calculate the maximum effective radiated power in any direction for this Galtronics small cell site? Professional engineer consultants calculated the maximum effective radiated power in any direction would be 85.4 Watts, representing simultaneous operation of 2.4 Watts for 5 GHz WiFi and 83 Watts for PCS service.
Here's a quote from the Site and Facility Description: AT&T is proposing to install one Galtronics Model GQ2410-06621, 2-foot tall, cylindrical antenna, on a cross-arm to be added to the side of a new utility pole. The antenna would employ no downtilt and would be mounted at an effective height of about 24 feet above ground. The maximum effective radiated power in any direction would be 85.4 Watts, representing simultaneous operation of 2.4 watts for 5 GHz WiFi and 83 Watts for PCS service.
For the Galtronics Model GQ2410-06621 (https://galtronics.com/wp-content/uploads/2019/10/Datasheet-GQ2410-06621-Rev_1.0.pdf), I have attached the specifications.