Abstract: An apparatus for cleaning commercially-available, bulk bird seed is disclosed. The invention being mainly comprised of three main parts: a first part being a rectangular-shaped container; a second part being collection chambers; and a third part being an adjustable fan . A user pours bird seed into an open slot in the case. As the seed enters the case, a fan is used to entrain the seeds. Heavier, viable seeds fall out of the air stream into one chamber of the device, and lighter, fugitive husk falls out of the air stream into another chamber. An object of the invention is to automatically segregate and clean bird seed in preparation for feeding birds of various sizes.

Abstract: An apparatus for direction-finding a received radio signal is disclosed. The receiving apparatus selectively receives on a predetermined frequency to match the transmitter frequency. The receiving apparatus comprises of two or three antennas, including one or two loop antennas that work in conjunction with a third reference antenna (whose phase does not vary when its orientation changes relative to the transmitter) such as a dipole, monopole or helical antenna. By comparing the phase between the antennas the direction of the incoming RF signal can be determined. In some embodiments, the windings of the two loop antennas are wound in reverse with respect to each other in order to substantially double the sensitivity of the signal-detection capabilities.