uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

NL7TK callsign genealogy

Currently held by GRAMLING JR, OLIVER D

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 NL7TK's current licensee, walking backwards.

  1. WA4TKactive· E
    Higdon, Michael SKYgranted 2026-05-08
  2. K4LKYcancelled· E
    Higdon, Michael SKYgranted 2026-04-14cancelled 2026-05-08
  3. AG4HIcancelled· E
    Higdon, Michael SKYgranted 2014-12-10cancelled 2016-07-12
  4. KT4OGcancelled· E
    Higdon, Michael SKYgranted 1996-04-10cancelled 2001-03-19
  5. KE4WJI
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held NL7TK.

  1. WA4TKcancelled· A
    GRAMLING JR, OLIVER DVAgranted 2001-10-07cancelled 2010-06-15

All historical holders

Every license row we've seen with the callsign NL7TK, oldest first.

  • GRAMLING JR, OLIVER D VA
    2001-09-10 → cancelled 2001-10-07
  • GRAMLING JR, OLIVER D WA
    2020-03-30 active
← Back to NL7TK License history →