K1HHH
Active1x3District 1
Competitive callsign — 8 applications filed with the FCC.
License HolderIsayev, Mark
License ClassGeneral
Min. Class RequiredGeneral
LocationPortland, OR
Grant DateDec 30, 2025
Expiration DateDec 30, 2035
K1HHH is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Isayev, Mark in Portland, OR. This callsign has attracted significant interest in the amateur radio community, with 8 vanity applications filed with the FCC. The most recent was submitted by Isayev, Mark on Dec 8, 2025. K1HHH has 2 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .---- .... .... ....
CW Weight: 32 units(Moderate)
Voice Phonetics
Kilo One Hotel Hotel Hotel
Readability: 8/10(High readability)
License History
- License IssuedDec 30, 2025
- Vanity Callsign GrantedDec 30, 2025
Vanity Application Activity
Competing applications filed with the FCC for this callsign.