Entrex has provided services to all the major wireless communications service providers, including AT&T, T-Mobile, Sprint Nextel, Verizon Wireless, Clearwire, Lightsquared, XM Radio, Fibertower, and Cricket Communications.


The firm is a preferred engineering services provider for a number of rooftop managers, property owners, tower  developers and utility companies including the General Services Administration, Baltimore Gas and Electric,  Milestone Communications, Global Tower, and Wireless Development Corporation.


Entrex has also designed many distributed antenna system sites (DAS) that are located on utility poles, including the DAS systems in Great Falls, Oakton, and Penderbrook in northern Virginia, and in Gaithersburg, Maryland.


Entrex also has extensive experience in the design of in-building sites, and has designed all the Base Station sites that serve the WMATA Metro system in the Washington DC area.


Entrex has designed more than 5,000 sites in the Washington DC Metropolitan area, including new tower sites, rooftops, co-located sites and other site types. We have a vast database of site plans, building drawings, and tower drawings that enable us to provide prompt and cost effective services for carriers trying to co-locate on sites we have in our database. See the spreadsheet below for a searchable list by address of sites that we have on out database.