The Roswell Report: Fact vs. Fiction in the New Mexico Desert

Figure 23. As on Flight 55, the balloon appears to have moved across the isobars, toward lower pressure. Figure 23 Radio direction-finding tracking (SCR-658) was used during the first 367 minutes of this flight. This was made possible by a strong output from the battery, indicating that no harmful effects were experienced in the cold atmosphere despite the absence of solar radiation. The need for measurements of the temperature of the batteries was suggested by this flight.