N9TPB FCC License Search

🕒 FCC license data updated today 8:32 am CDT · next update today 9:45 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

KD6VSN HAM

✅ Available for a vanity request — free since Sep 24, 2026.

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 · 2 holders on record · available since Sep 24, 2026

Previous holder: MACK H DUDERSTADT JR

Held KD6VSN Sep 23, 2014 → Sep 23, 2024 · first licensed Oct 28, 2013 as KK6HFC · 2 licenses · FRN 0023039068

KD6VSN Expired General · vanity Sep 23, 2014 → Sep 23, 2024 (expired)

Licensee
MACK H DUDERSTADT JR

Address
1359 PEARL ST APT H
ALAMEDA, CA 94501
37.7747, -122.2781 (ZIP center) · Grid CM87us · CQ 3 · ITU 6 · map ↗

FRN
0023039068

Previous call
KK6HFC (Technician)

Last granted
Sep 23, 2014

Effective
Oct 18, 2018

Last action
Sep 26, 2026
FCC actions (4)
- Sep 26, 2026 — License expired LIEXP
- Oct 18, 2018 — License modified LIMOD
- Sep 23, 2014 — Vanity call sign granted VANGRT
- Sep 23, 2014 — License issued LIISS
KK6HFC Canceled Technician Oct 28, 2013 → Sep 23, 2014 (canceled)

Licensee
Mack H Duderstadt Jr

Address
1359 Pearl St Apt H
Alameda, CA 94501
37.7747, -122.2781 (ZIP center) · Grid CM87us · CQ 3 · ITU 6 · map ↗

FRN
0023039068

Last granted
Oct 28, 2013

Effective
Oct 28, 2013

Last action
Sep 23, 2014
FCC actions (3)
- Sep 23, 2014 — License canceled LICAN
- Oct 28, 2013 — License issued LIISS
- Oct 28, 2013 — Systematic call sign granted SYSGRT

Address history

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

Seen Mar 28, 2014 → Oct 4, 2026 · 74 snapshots · as KK6HFC
Mack H Duderstadt Jr
1359 Pearl St Apt H, Alameda, CA 94501
37.7747, -122.2781 (ZIP center) · Grid CM87us · CQ 3 · ITU 6 · map ↗

Previous holder: DEBRA Y CHOLODENKO

Held KD6VSN May 18, 1993 → May 18, 2003 · first licensed May 18, 1993 as KD6VSN · 1 license · no FRN on file (pre-2001 records)

KD6VSN Expired Technician May 18, 1993 → May 18, 2003 (expired)

Licensee
DEBRA Y CHOLODENKO

Address
12099 SUMMIT CIR
BEVERLY HILLS, CA 90210
34.1005, -118.4146 (ZIP center) · Grid DM04tc · CQ 3 · ITU 6 · map ↗

Last granted
May 18, 1993

Effective
May 18, 1993

Last action
May 19, 2005
FCC actions (1)
- May 19, 2005 — 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 KD6VSN
DEBRA Y CHOLODENKO
12099 SUMMIT CIR, BEVERLY HILLS, CA 90210
34.1005, -118.4146 (ZIP center) · Grid DM04tc · CQ 3 · ITU 6 · map ↗

Others requesting KD6VSN

1 application listed KD6VSN as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Sep 4, 2014	Sep 22, 2014	KK6HFC · Mack H Duderstadt Jr · Alameda, CA	1	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KD6VSN in the last 24 hours. They show up here within seconds of KD6VSN beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.