Changbum Yoo
Active- Service
- Amateur Vanity
- Class
- General
- Location
- FOUNTAIN VALLEY, CA
- FRN
- 0009078916
- Granted
- Jul 28, 2026
- Expires
- Jul 28, 2036
FCC Amateur and GMRS license lookup
Search public FCC ULS records by callsign, FRN, name, or location.
K6IWY
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- Try W1AW, or enter several callsigns separated by commas.
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