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AI4HD

Available2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderStiles, Frederick L

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationLehigh Acres, FL

Grant DateSep 15, 2004

Expiration DateSep 15, 2014

Cancellation DateOct 8, 2004

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AI4HD

Available2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderStiles, Frederick L

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationLehigh Acres, FL

Grant DateSep 15, 2004

Expiration DateSep 15, 2014

Cancellation DateOct 8, 2004

Available for ApplicationsOct 9, 2006

AI4HD is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Stiles, Frederick L in Lehigh Acres, FL. 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 DALTON JR, LYLE H on Apr 24, 2012. AI4HD has 2 recorded FCC license history events.

CW & Voice Analysis

Morse Code

.- .. ....- .... -..

CW Weight: 22 units(Light (fast to send))

Voice Phonetics

Alpha India Four Hotel Delta

Readability: 7.5/10(High readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (2x2).

License History

License CanceledOct 8, 2004
License IssuedSep 15, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

DALTON JR, LYLE HFiled Apr 24, 2012
Not awardedFCC ↗

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FCC data as of Sep 3, 2026

AI4HD FCC Vanity Status: 1 Competing Application & History