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atmos:steam:stream_sonde_balloon_launches

Launches

Antenna Troubleshoot

All log files for the launches can be found on aircraft

10/20/22

Using iMet software, was able to check and see if any notable interference was showing up near the frequencies sonde was operating at, there was none (see photo below). As can be seen, the dB readout near and around the frequency being tested (405.8 MHz) was relatively uniform.

After turning on and initializing the sonde to a frequency of 405.8 MHz, the software detected a spike at that frequency to about 50 dB (see image below). This spike, of course, was the sonde. Even though the signal existed, was still having trouble with maintaining a reasonable RSSI even from the launching point (the roof of Clifford Hall near where the antenna was located).

cable connections were rechecked, but RSSI did not improve, distance from the antenna before launch was roughly 2-3 meters. Not long after launch, data packets ceased to be received (refer to the log files attached). Power recorded by the iMet software once the data packets ceased shows that the frequency was still in use, although the power was slightly less than at launch. There was also no notable interference near the sonde's operating frequency. (see image below)

atmos/steam/stream_sonde_balloon_launches.txt · Last modified: 2022/10/25 21:42 by nicholas.camp