Michael B Markham
Active- Service
- General Mobile Radio Service
- Location
- BOULDER, CO
- FRN
- 0038000378
- Granted
- Feb 10, 2026
- Expires
- Feb 10, 2036
FCC Amateur and GMRS license lookup
Search public FCC ULS records by callsign, FRN, name, or location.
WSLP857
- Callsign
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