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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

AD7H callsign genealogy

Currently held by GEISSMANN, STANLEY L

The FCC publishes a previous_call_sign on every amateur license — a self-link to the licensee's prior callsign. Following those links produces the chain below.

Previous callsigns

Older callsigns held by AD7H's current licensee, walking backwards.

  1. N6NPactive· E
    Ma, BoyiCAgranted 2021-12-21
  2. AJ6ULcancelled· E
    Ma, BoyiCAgranted 2021-10-29cancelled 2021-12-21
  3. KN6RMNcancelled· E
    Ma, BoyiCAgranted 2021-10-29cancelled 2021-11-05

Successor callsigns

Callsigns held now by people who previously held AD7H.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AD7H, oldest first.

  • GEISSMANN, STANLEY L WA
    2007-09-11 → cancelled 2019-11-13
  • HEARN, BRIAN R NV
    2019-11-30 active
← Back to AD7H License history →