Dear PoPville – Any Idea What this is?

“Dear PoPville,

I was sitting on my girlfriend’s balcony this morning on Clifton Street when a random rental truck pulled up with a man-lift in tow behind it. It was a big rental moving truck from Penske and the lift also seemed to be from a heavy equipment rental service. Two guys in plain work clothes jumped out and used the lift to go up to the city street light. Initially I thought they were contractors changing a bulb, but instead they attached this bizarre device to the top of the street light. It looks to be some kind of transmitter/receiver, but it seemed odd to me that if this was a sanctioned city job that the guys were not in a public works truck or uniform of some sort. They worked pretty fast- were on the move again in about 10 minutes (seems to efficient to be government- hah!). Do you have any idea what this device is?

It is a bit unnerving that anyone who wants to rent a truck and a lift could attach some kind of receiver to a street light and go mostly unnoticed. Someone with malicious intent and the correct know how could be intercepting calls/texts/emails or wifi signals in the neighborhood with something like this and no one would be the wiser.”