Field Name · Applicant
Italic names are derived; accent values differ from the applicant’s prior license.
| Applicant Type | I - Individual |
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| Entity Type | L - Licensee or Assignee |
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| Entity Name | Serio, Mark R |
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| Attention | |
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| First Name / Middle Init / Last Name / Name Suffix | Mark R Serio |
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| Street Address | 119 Croftley Rd |
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| Po Box | |
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| Locality | Lutherville Timonium |
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| County | Baltimore County |
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| State | MD - Maryland |
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| Postal Code | 21093 |
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| Zip Location | 39°26'20.9"N 76°38'27.4"W |
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| Maidenhead | FM19qk |
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| FRN | 0033881475 |
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| Geo Region | 3 / MD |
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| Licensee ID/SGIN | L02680596 / 000 |
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| Callsign | K3ABZ |
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| Last Action Date | 2025-09-15 |
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| Radio Service | HV - Vanity |
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| App Purpose | MD - Modification |
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| App Source | B - Batch |
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| App Status | G - Granted |
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| Entered Timestamp | 2025-09-15 |
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| Fee Control Num | |
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| Orig Purpose | MD - Modification |
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| Receipt Date | Mon 2025-09-15 |
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| Payment Date | |
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| Is From Vec | N · Y |
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| Is Trustee | |
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| Operator Group | C - 1x3 |
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| Licensee Class | E - Amateur Extra |
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| New Seq Callsign | N |
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| Trustee Callsign | |
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| Trustee Name | |
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| ULS Group / ULS Region | C / 3 |
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| Prev Callsign / Prev Class | |
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| Vanity Relationship | |
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| Vanity Type | |
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| Fee Exempt / Waiver | N / N |
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