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| landing coordinates = 37.6634, -121.3217
| landing coordinates = 37.6634, -121.3217
| last = 90
| last = 90
| next =
| next = 92
}}
}}
'''Balloon''': 0.3 mil polyethylene, paper bag topology, width 1.8 m, length 7 m, volume approximately 6 cubic meters. Total mass 0.26 kg with fill tube (PVC of length approximately 12 inches and diameter 1/2 inch).
'''Balloon''': 0.3 mil polyethylene, paper bag topology, width 1.8 m, length 7 m, volume approximately 6 cubic meters. Total mass 0.26 kg with fill tube (PVC of length approximately 12 inches and diameter 1/2 inch).
'''Avionics''': TinyGPS, Teensy 3.2 transmitting at adjustable intervals over Rockblock. SPOT Trace.
'''Avionics''': TinyGPS, Teensy 3.2 transmitting at adjustable intervals over Rockblock. SPOT Trace. Attempts to interface this Teensy with a BMP 280 were universally unsuccessful. This set of avionics was finished from the incomplete second set made for [[SSI-87|CY-3]].
'''Power''': 9 L91 lithium AA batteries. Resistive heater running on single L91 battery.
'''Power''': 9 L91 lithium AA batteries. Resistive heater running on single L91 battery.