KA4RNH
Available2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderSlack, Michael L
License ClassP
Min. Class RequiredTechnician
LocationAustin, TX
Grant DateOct 8, 2010
Expiration DateDec 31, 2020
Cancellation DateMay 2, 2017
Available for ApplicationsMay 3, 2019
KA4RNH is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Slack, Michael L in Austin, TX. 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 Hughes Jr, Robert N on Nov 21, 2025. KA4RNH has 8 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .- ....- .-. -. ....
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Alpha Four Romeo November Hotel
Readability: 6.5/10(Good readability)
This callsign is available now
Requires Technician license or higher to apply for this callsign format (2x3).
License History
- License CanceledMay 2, 2017
- License ModifiedNov 14, 2016
- Administrative Update AppliedJul 16, 2013
- License RenewedOct 8, 2010
- Administrative Update AppliedDec 4, 2008
- License ModifiedMay 13, 2003
- Administrative Update AppliedAug 28, 2001
- License RenewedNov 3, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Hughes Jr, Robert NFiled Nov 21, 2025Not awardedFCC ↗