K1EFX
Active1x3District 1
Competitive callsign — 1 application filed with the FCC.
License HolderMacpherson, David E
License ClassGeneral
Min. Class RequiredGeneral
LocationClear Lake, IA
Grant DateMar 24, 2026
Expiration DateMay 26, 2036
K1EFX is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Macpherson, David E in Clear Lake, IA. 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 Macpherson, David E on Apr 20, 2006. K1EFX has 14 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .---- . ..-. -..-
CW Weight: 35 units(Moderate)
Voice Phonetics
Kilo One Echo Foxtrot X-ray
Readability: 8/10(High readability)
License History
- License RenewedMar 24, 2026
- License ModifiedApr 14, 2025
- Administrative Update AppliedMar 14, 2024
- License RenewedMay 26, 2016
- Administrative Update AppliedAug 2, 2014
- Administrative Update AppliedJun 7, 2011
- Administrative Update AppliedMar 10, 2011
- Administrative Update AppliedAug 10, 2010
- Administrative Update AppliedAug 10, 2010
- Administrative Update AppliedJul 31, 2010
- Administrative Update AppliedDec 19, 2007
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Macpherson, David EFiled Apr 20, 2006Not awardedFCC ↗