A wireless repeater, comprising: a first and a second multi-band antenna (505A, 505B) each comprising a first antenna loop responsive to a first band of frequencies and a second antenna loop responsive to a second, different band of frequencies, and each loop has a length of approximately one wavelength of a frequency within their respective bands; a first transceiver electrically coupled to the first antenna; a second transceiver electrically coupled to the second antenna; a conductive ground plane separating the first antenna and the first transceiver from the second antenna and the second transceiver; wherein the first and the second transceiver (515A, 515B) are in electrical communication through the conductive ground plane; and characterized in that the first multi-band antenna is electrically isolated from the second multi-band antenna by at least 30 dB by physically spacing the first multi-band antenna and the second multi-band antenna from the conductive ground plane by distances of less than 0.5 wavelengths of a frequency associated with at least one of the first and the second frequency bands; and. the first multi-band antenna is electrically isolated from the second multi-band antenna by at least 45 dB by at least one of i. physically spacing the first multi-band antenna and the second multi-band antenna from the conductive ground plane by distances of approximately 0.064 wavelengths of a frequency associated with at least one of the first and the second frequency bands; and ii. cross-polarizing the first and second multi-band antennae (505A; 505B). a first and a second multi-band antenna (505A, 505B) each comprising a first antenna loop responsive to a first band of frequencies and a second antenna loop responsive to a second, different band of frequencies, and each loop has a length of approximately one wavelength of a frequency within their respective bands; a first transceiver electrically coupled to the first antenna; a second transceiver electrically coupled to the second antenna; a conductive ground plane separating the first antenna and the first transceiver from the second antenna and the second transceiver; the first antenna and the first transceiver from the second antenna and the second transceiver; wherein the first and the second transceiver (515A, 515B) are in electrical communication through the conductive ground plane; and characterized in that the first multi-band antenna is electrically isolated from the second multi-band antenna by at least 30 dB by physically spacing the first multi-band antenna and the second multi-band antenna from the conductive ground plane by distances of less than 0.5 wavelengths of a frequency associated with at least one of the first and the second frequency bands; and. the first multi-band antenna is electrically isolated from the second multi-band antenna by at least 45 dB by at least one of i. physically spacing the first multi-band antenna and the second multi-band antenna from the conductive ground plane by distances of approximately 0.064 wavelengths of a frequency associated with at least one of the first and the second frequency bands; and ii. cross-polarizing the first and second multi-band antennae (505A; 505B). i. physically spacing the first multi-band antenna and the second multi-band antenna from the conductive ground plane by distances of approximately 0.064 wavelengths of a frequency associated with at least one of the first and the second frequency bands; and ii. cross-polarizing the first and second multi-band antennae (505A; 505B).