- 110m, distance from centers EA->BB

### FSPL
$$
\begin{gather}
FSPL(dB) = 20\log_{10}(d) + 20\log_{10}(f)+20\log_{10}\left( \frac{4\pi}{c} \right) \\
FSPL = 20\log_{10}(0.1) + 20\log_{10}(446) + 36.44\\
\approx 66 dB
\end{gather}
$$

Loss just by transmitting (assuming 0 gain for both transmit and receive). Pretty bad.

## Wall attenuation
- Assuming 1 meter thickness per wall, estimate `15dB` loss, assuming max 4 walls
$$
66dB+ 60dB = 126dB
$$

## Total Loss
$$27 - 126 = -99dBm$$

## Conclusion
Assuming $-100dBm$ is the sensitivity bound, that shit is BARELY above it. Any interference would cause us to not hear each other.