 Only limited radio bandwidth was available to transmit the video signal from the lunar landings, which needed to be multiplexed with other communication and telemetry channels beamed from the Lunar Module, back to Earth.Therefore, Apollo 11's moonwalk video was transmitted from the Apollo TV camera in a monochrome SSTV format at 10 frames per second (fps) with 320 lines of resolution, progressively scanned.These SSTV signals were received by radio telescopes at Parkes Observatory, the Goldstone tracking station, and Honeysuckle Creek tracking station.