N0JOO
Available1x3District 0
Competitive callsign — 1 application filed with the FCC.
License HolderHeppelmann, Don M
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationMaplewood, MN
Grant DateJul 4, 1998
Expiration DateJul 4, 2008
Cancellation DateMay 4, 2001
Available for ApplicationsMay 5, 2003
N0JOO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Heppelmann, Don M in Maplewood, MN. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Noble, Joshua W on Mar 6, 2026. N0JOO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. ----- .--- --- ---
CW Weight: 47 units(Heavy (slower to send))
Voice Phonetics
November Zero Juliet Oscar Oscar
Readability: 6.5/10(Good readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License CanceledMay 4, 2001
- Tax ID (TIN) AddedMar 23, 2001
- License ModifiedMar 23, 2001
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Noble, Joshua WFiled Mar 6, 2026Not awardedFCC ↗