AK4DU
Call sign AK4DU was granted to SIERRA JR, ALBERTO by the Federal Communications Commission (FCC) on Nov 30, 2010 . The FCC license ID of this call sign is 3249438. More details about call sign AK4DU can be found in the table below.
| FCC License Id | 3249438 |
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| Radio Service Code | HA |
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| Description of the Radio service | Amateur |
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| Date When the FCC Granted the Authorization | 2010-11-30 |
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| Date When the Authorization Has or Will Expire | 2020-11-30 |
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| Date on Which the Authorization Was Cancelled | 2022-12-01 |
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| Date This Record Was Last Updated. | 2022-12-01 |
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| Service Category | Personal Use |
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| High-level Service Category Description | Personal Use |
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| Licensing Source System | ULS |
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| FCC Registration Number (FRN) | 0020369567 |
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| License Status Status | Expired |
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| High-level License Status | Expired |
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| Description of Entity Type | Individual |
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| High-level Entity Type Description | Individual |
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