I haven’t played with any stationary antennas but I think it’s possible. The scanner that is used in the video has configuration for transmit power. At its max

I haven’t played with any stationary antennas but I think it’s possible. The scanner that is used in the video has configuration for transmit power. At its maximum setting, the range is 15 feet with clear line of sight. Tags with larger antennas, generally speaking, have longer range but might be too big for younger chickens. So overall there are a lot of variables.