In two parts:
Part 1. A flying roll that measures 20 cubits x 10 cubits. The flying roll is obviously a broadcasting wavelength, because it enters every home on earth. Or an entire range of same, within which many broadcasts are made.
Part 2. Receivers in every home. Now they may be televisions, computers, i-pads, e-pads or mobile phones.
You know, when I first read that in Zechariah 5:-, in the early 1970,s, I was convinced it was Television, but the dimensions did not fit then. They certainly do now, (100%) with i-Pads etc that fit in your pocket with ease. Just about spot on. I would never have another TV or an i-Pad.