Why CEL-FI QUATRA Offers Better Coverage and signal Strength than Passive DAS
![](https://nextivityinc.com/wp-content/uploads/2017/09/CEL-FI-Blog_Why-CEL-FI-QUATRA-offers-better-coverage-and-signal-strength-than-passive-DAS-2-002.png)
One of the issues with passive DAS (pDAS) or BDA (bi-directional amplifier) systems is that the cellular signal loses strength – also known as attenuation – the further the distance the remote unit is from the head end. That’s because pDAS is an analog system in which cellular signals are distributed over coax cable that […]