Sorry I wasn't more clear - nothing active on the 4G antenna, just the coax feeding it. Will have an amp. in the house for that setup. For the 900 MHz yagi, there is more than just the Cat. 5 feeding the antenna - there is a device just below it. The Cat. 5 comes in the house and feeds into a small Cat. 5 dongle-type thing with a/c power going to the dongle. So I assume some small voltage goes back out to the antenna...at least that's what the installer said. I can take a pic of the antenna tomorrow and post. Coax, Cat. 5 and ground wire will be going up the pole.