Hey Bill, et al.
I know what you're talking about (those ones on the street lights are
deprecated Ricochet wireless antennas from the .com era; they're still
EVERYWHERE and non-functional!) :)
My city does not have free wireless (and knowing them I doubt they are
planning it). My city is not modern and hasn't even begun running
I did a ~10 minute search on Google ..(e.g. smart grid, wireless
powerline antenna, inline powerline antenna, etc) and came up with
nothing close to what this device looks like. It occurs to me, but of
course just a guess, that this device would not be suspended inbetween
telephone poles if it didn't have to be. Most devices would be on the
pole or on a stand (like a transformer) unless...perhaps...they
interfere with the device?
I'm assuming this device derives power from the lines and isn't simply
passive due to the fact that there is a heat sink on it..
So, antennas, perhaps a transceiver?