[TowerTalk] Conductivity of cement

[VE6WZ_Steve]

"concrete walls" are usually full of re-bar.

> One of our town's local 2m repeaters uses two separate antennas one
for
> transmit and one for receive rather than spend the $1,500 for a
duplexor.
> The penhouse concrete walls provide about 100db attenuation between
the
> two
> antennas during repeater use.  No desense.  Seems like concrete does
> attentuate a bit ;-)
>