N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · next update tomorrow 6:00 am CDT

Ask: HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WI

WD4DDT HAM

✅ Available for a vanity request — free since Oct 4, 2001.

2x3 call: any licensee can request it. No pending applications list it.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

Not currently held · 1 holder on record · available since Oct 4, 2001

Previous holder: ROBERT L TROBAUGH JR

Held WD4DDT Oct 3, 1989 → Oct 3, 1999 · first licensed Oct 3, 1989 as WD4DDT · 1 license · no FRN on file (pre-2001 records)

WD4DDT Expired Advanced Oct 3, 1989 → Oct 3, 1999 (expired)

Licensee
ROBERT L TROBAUGH JR

Address
10013 MAYFIELD DR
BETHESDA, MD 20817
38.9973, -77.1518 (ZIP center) · Grid FM18kx · CQ 5 · ITU 8 · map ↗

Last granted
Oct 3, 1989

Effective
Oct 3, 1989

Last action
Oct 4, 2001
FCC actions (1)
- Oct 4, 2001 — License expired LIEXP

Address history

From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as WD4DDT
ROBERT L TROBAUGH JR
10013 MAYFIELD DR, BETHESDA, MD 20817
38.9973, -77.1518 (ZIP center) · Grid FM18kx · CQ 5 · ITU 8 · map ↗

Others requesting WD4DDT

2 applications listed WD4DDT as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Jul 21, 2025	Aug 8, 2025	KQ4ZDJ · DANNY D TATUM · UNION GROVE, NC	3	Granted
Feb 2, 2005	Feb 20, 2005	WD4HWW · Donald D Traywick · Birmingham, AL	2	Dismissed

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for WD4DDT in the last 24 hours. They show up here within seconds of WD4DDT beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.