This repository contains HamSCI June 2021 Eclipse Festival of Frequency Measurement result from my home station JJ1BDX in Setagaya City, Tokyo, Japan at Grid Locator PM95tp.

7-JUN-2021 0000UTC - 12-JUN-2021 2359UTC

• Antenna: 2.2m-length 30m-band whip at 8m height above the ground
• SDR frontend: Airspy HF+ Discovery, without GPSDO
• SDR software: airspy-fmradion 20210427-0, running on Ubuntu 21.04 x86_64 (Intel NUC NUC10i7FNH)
• Recorded 8kHz-rate WAV files at approx. 9999kHz USB
• Airspy HF+ Discovery offset: 0.83Hz lower (i.e., 10MHz was mapped to 1000.83Hz), measured by Leo Bodnar mini GPSDO after the signal measurement was completed

• Estimated frequency of received AM carrier for the standard frequency stations (BPM, WWVH, WWV were observable)
• Estimated signal strength (by airspy-fmradion dBFS IF strength reading)
• GPSDO offset measured after the frequency measurement

• aggregated-values/: merged data of from the measured-values/ directory files, and the calculation/estimation/visualization R code
• graphs/: summary graphs by date
• measured-values/: measured data by analyzing the recorded WAV files
• measurement-code/: the WAV file analysis code in csdr and C

• Kristina Collins, KD8OXT
• HamSCI people and community
• Pepabo R&D Institute, GMO Pepabo, Inc., for their financial and moral support

CC0