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

• Read measurement-code/README.md first
• Then follow aggregated-values/README.md
• See Zenodo archive (doi: 10.5281/zenodo.5774479) for the raw audio data

1-DEC-2021 0000UTC - 10-DEC-2021 2359UTC

See also grape-1-testing-log.md for the configuration details.

• Antenna: 1m-length 30m-band whip at 8m height above the ground
• Receiver: HamSCI Grape 1 with Leo Bodnar mini GPSDO
• Sound interface: Sabrent audio interface
• Recorded on: running on Ubuntu 20.04.3 x86_64 (Intel NUC DN2820FYKH with Intel Celeron N2820)
• Recorded 8kHz-rate WAV files at 9999kHz DSB (both USB and LSB merged)
• See jj1bdx/dcrx-10MHz-design for the further reference.

• Estimated frequency of received AM carrier for the standard frequency stations (BPM, WWVH, WWV were observable)
• Estimated relative amplitude of the carrier (after filtered for the frequency measurement)
• Sound card sampling rate offset (by recording starting and ending time of 86400-second (1-day) reception activity)

• add-wavefile-tags/: templates and scripts for adding WAV file tags using taglib
• aggregated-values/: merged data of from the measured-values/ directory files, and the calculation/estimation/visualization R code
• fldigi-csvs/: fldigi-and-PSWS-compatible CSV output of the estimated data by date
• 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

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