{"slug":"saylorinnovations-com-api-radio-callsign-call-d5022b","title":"US amateur radio callsign lookup","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/radio/callsign/:call","category":"other","description":"US amateur radio callsign lookup - licence class, status, grant and expiry dates, licensee name and grid square from the FCC database","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":415,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","pathParams":{"call":"W1AW"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET","POST","PUT","PATCH","DELETE","HEAD"],"type":"string"},"pathParams":{"properties":{"call":{"description":"US amateur radio callsign in the path, e.g. W1AW","type":"string"}},"required":["call"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method","pathParams"],"type":"object"},"output":{"properties":{"example":{"properties":{"callsign":{"description":"Aircraft callsign","type":"string"},"city":{"description":"City","type":["string","null"]},"expiry_date":{"description":"Expiry date","type":["string","null"]},"frn":{"type":["string","null"]},"grant_date":{"description":"Grant date","type":["string","null"]},"grid_square":{"description":"Grid square","type":["string","null"]},"last_action_date":{"description":"Last action date","type":["string","null"]},"licence_type":{"description":"Licence type","type":["string","null"]},"licensee":{"type":["string","null"]},"note":{"description":"Caveat or context for reading the result","type":"string"},"operator_class":{"description":"Operator class","type":["string","null"]},"previous_callsign":{"description":"Previous callsign"},"source":{"description":"Data source the values come from","type":"string"},"state":{"description":"State or region","type":["string","null"]},"status":{"description":"Current status","type":"string"},"trustee":{"type":["string","null"]},"trustee_name":{"description":"Trustee name","type":["string","null"]},"uls_url":{"description":"Uls URL","type":["string","null"]},"zip":{"type":["string","null"]}},"required":["callsign","status"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-18","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":415,"error":null}],"description_full":"US amateur radio callsign lookup - licence class, status, grant and expiry dates, licensee name and grid square from the FCC database","last_updated":"2026-10-16T01:50:02.863Z","schemes":["exact"]}