{"id":30671929,"url":"https://github.com/guycole/mellow-mastodon","last_synced_at":"2025-09-01T04:46:12.858Z","repository":{"id":293565774,"uuid":"983878085","full_name":"guycole/mellow-mastodon","owner":"guycole","description":"RF Energy Survey","archived":false,"fork":false,"pushed_at":"2025-08-26T23:46:14.000Z","size":71924,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-08-27T08:22:00.400Z","etag":null,"topics":["python3","rtl-sdr"],"latest_commit_sha":null,"homepage":"","language":"Python","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"gpl-3.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/guycole.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2025-05-15T04:00:25.000Z","updated_at":"2025-08-20T00:01:57.000Z","dependencies_parsed_at":"2025-05-30T20:11:18.135Z","dependency_job_id":"04f157b3-43f0-405c-95e5-b7372c0b1035","html_url":"https://github.com/guycole/mellow-mastodon","commit_stats":null,"previous_names":["guycole/mellow-mastodon"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/guycole/mellow-mastodon","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/guycole%2Fmellow-mastodon","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/guycole%2Fmellow-mastodon/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/guycole%2Fmellow-mastodon/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/guycole%2Fmellow-mastodon/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/guycole","download_url":"https://codeload.github.com/guycole/mellow-mastodon/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/guycole%2Fmellow-mastodon/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":273076023,"owners_count":25041304,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-09-01T02:00:09.058Z","response_time":120,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["python3","rtl-sdr"],"created_at":"2025-09-01T04:46:10.461Z","updated_at":"2025-09-01T04:46:12.827Z","avatar_url":"https://github.com/guycole.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"mellow-mastodon\n===============\n\nRF Energy Survey using the rtl_power(1) utility from the [rtl-sdr](https://github.com/osmocom/rtl-sdr) library.  \n\nrtl_power(1) will scan a range of spectrum (sliced into bins) and produce a value (for the bin) based upon observed signal strength.  I redirect this to a file which is eventually loaded into postgres.\n\nCollecting samples over time allows discovery of frequencies in active use.\n\nCollection scripts reside in bin, database loader in src.\n\nMastodon replaces the obsolete [Mellow Elephant](https://github.com/guycole/mellow-elephant)\n\n```\nrtl_power -help\nrtl_power, a simple FFT logger for RTL2832 based DVB-T receivers\n\nUse:\trtl_power -f freq_range [-options] [filename]\n\t-f lower:upper:bin_size [Hz]\n\t (bin size is a maximum, smaller more convenient bins\n\t  will be used.  valid range 1Hz - 2.8MHz)\n\t[-i integration_interval (default: 10 seconds)]\n\t (buggy if a full sweep takes longer than the interval)\n\t[-1 enables single-shot mode (default: off)]\n\t[-e exit_timer (default: off/0)]\n\t[-d device_index or serial (default: 0)]\n\t[-g tuner_gain (default: automatic)]\n\t[-p ppm_error (default: 0)]\n\t[-T enable bias-T on GPIO PIN 0 (works for rtl-sdr.com v3 dongles)]\n\tfilename (a '-' dumps samples to stdout)\n\t (omitting the filename also uses stdout)\n\nExperimental options:\n\t[-w window (default: rectangle)]\n\t (hamming, blackman, blackman-harris, hann-poisson, bartlett, youssef)\n\t[-c crop_percent (default: 0%, recommended: 20%-50%)]\n\t (discards data at the edges, 100% discards everything)\n\t (has no effect for bins larger than 1MHz)\n\t[-F fir_size (default: disabled)]\n\t (enables low-leakage downsample filter,\n\t  fir_size can be 0 or 9.  0 has bad roll off,\n\t  try with '-c 50%')\n\t[-P enables peak hold (default: off)]\n\t[-D enable direct sampling (default: off)]\n\t[-O enable offset tuning (default: off)]\n\nCSV FFT output columns:\n\tdate, time, Hz low, Hz high, Hz step, samples, dbm, dbm, ...\n\nExamples:\n\trtl_power -f 88M:108M:125k fm_stations.csv\n\t (creates 160 bins across the FM band,\n\t  individual stations should be visible)\n\trtl_power -f 100M:1G:1M -i 5m -1 survey.csv\n\t (a five minute low res scan of nearly everything)\n\trtl_power -f ... -i 15m -1 log.csv\n\t (integrate for 15 minutes and exit afterwards)\n\trtl_power -f ... -e 1h | gzip \u003e log.csv.gz\n\t (collect data for one hour and compress it on the fly)\n\nConvert CSV to a waterfall graphic with:\n\t http://kmkeen.com/tmp/heatmap.py.txt \n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fguycole%2Fmellow-mastodon","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fguycole%2Fmellow-mastodon","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fguycole%2Fmellow-mastodon/lists"}