Page "Mariner 6 and 7" Paragraph 11

Three telemetry channels were available for telecommunications.

Channel A carried engineering data at 8⅓ or 33⅓ bit / s, channel B carried scientific data at 66⅔ or 270 bit / s and channel C carried science data at 16, 200 bit / s.

Communications were accomplished through the high-and low-gain antennas, via dual S-band traveling wave tube amplifiers, operating at 10 or 20 watts, for transmission.

The design also included a single receiver.

An analog tape recorder, with a capacity of 195 million bits, could store television images for subsequent transmission.

Other science data was stored on a digital recorder.

The command system, consisting of a central computer and sequencer ( CC & S ), was designed to actuate specific events at precise times.

The CC & S was programmed with both a standard mission and a conservative backup mission before launch, but could be commanded and reprogrammed in flight.

It could perform 53 direct commands, 5 control commands, and 4 quantitative commands.