KO4YWB
  Call sign KO4YWB was granted to Ling, David E by the Federal Communications Commission (FCC) on Mar 21, 2022 . The FCC license ID of this call sign is 4571937. More details about call sign KO4YWB can be found in the table below. 
    
   | FCC License Id | 4571937 | 
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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 | 2022-03-21 | 
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 | Date When the Authorization Has or Will Expire | 2032-03-21 | 
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 | Date on Which the Authorization Was Cancelled | 2022-09-30 | 
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 | Date This Record Was Last Updated. | 2022-09-30 | 
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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) | 0027384437 | 
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 | License Status Status | Canceled | 
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 | High-level License Status | Cancelled | 
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 | Description of Entity Type | Individual | 
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 | High-level Entity Type Description | Individual | 
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