How ERCES Antennas Work: Donor Antennas, Indoor Antennas, and Coverage
A firefighter enters a commercial building, heads down a stairwell, and suddenly loses radio contact with the team outside. The radio worked perfectly in the parking lot, so why did the signal disappear indoors? The problem often comes down to the building itself. Thick concrete, steel framing, and low-emissivity (low-E) glass can weaken radio waves…