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

DEREK W MAXWELL

FRN 0003355245 · first licensed Jun 30, 1999 as KB3DZZ · 3 licenses on record

📝 FCC applications (10)

Received	File number	Service	Purpose	Status	Call
Jul 27, 2020	0009162664	HAM	Administrative update	Granted	W3DWM
Sep 12, 2017	0007924194	HAM	Administrative update	Granted	W3DWM
Jan 5, 2015	0006602537	HAM	Renewal	Granted	W3DWM
Jun 24, 2009	0003879711	HAM	Administrative update	Granted	W3DWM
Sep 11, 2006	0002745274	HAM	Duplicate license	Granted	W3DWM
Sep 11, 2006	0002745272	HAM	Administrative update	Granted	W3DWM
Oct 28, 2004	0001916709	HAM	Modification	Granted	KZ3ZZZ
May 25, 2000	0000140713	HAM	Modification	Granted	KZ3ZZZ
Mar 16, 2000	0000095086	HAM	Modification	Granted	KZ3ZZZ
Jul 23, 1999	0000019067	HAM	Modification	Granted	KB3DZZ

Complete licensing history

📦 Moved: Chalfont, PA → Sioux Falls, SD

W3DWM Active General · vanity Nov 16, 2004 → expires Jan 6, 2025

Licensee
DEREK W MAXWELL

Address
3916 N Potsdam Ave #525
Sioux Falls, SD 57104
43.5892, -96.6950 (street) · Grid EN13po · CQ 4 · ITU 7 · map ↗

FRN
0003355245

Previous call
KZ3ZZZ (Technician Plus)

Last granted
Jan 6, 2015

Effective
Jul 28, 2020

Last action
Jul 28, 2020
FCC actions (7)
- Jul 28, 2020 — Administrative update LIAUA
- Sep 12, 2017 — Administrative update LIAUA
- Jan 6, 2015 — License renewed LIREN
- Jun 25, 2009 — Administrative update LIAUA
- Sep 12, 2006 — Administrative update LIAUA
- Nov 16, 2004 — Vanity call sign granted VANGRT
- Nov 16, 2004 — License issued LIISS
KZ3ZZZ Canceled General · vanity Sep 16, 1999 → Nov 16, 2004 (canceled)

Licensee
DEREK W MAXWELL

Address
104 HOMESTEAD COURT
CHALFONT, PA 18914-2049
40.2895, -75.2107 (ZIP center) · Grid FN20jg · CQ 5 · ITU 8 · map ↗

FRN
0003355245

Previous call
KB3DZZ (Technician Plus)

Last granted
Sep 16, 1999

Effective
May 26, 2000

Last action
Nov 16, 2004
FCC actions (4)
- Nov 16, 2004 — License canceled LICAN
- May 26, 2000 — License modified LIMOD
- Mar 17, 2000 — License modified LIMOD
- Sep 16, 1999 — License issued LIISS
KB3DZZ Canceled Technician Jun 30, 1999 → Sep 16, 1999 (canceled)

Licensee
DEREK W MAXWELL

Address
104 HOMESTEAD CT
CHALFONT, PA 18914-2049
40.2796, -75.2267 (street) · Grid FN20jg · CQ 5 · ITU 8 · map ↗

FRN
0003355245

Last granted
Jun 30, 1999

Effective
Jun 30, 1999

Last action
Sep 16, 1999
FCC actions (1)
- Sep 16, 1999 — License canceled LICAN

Address history

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

Seen Apr 16, 2022 → Oct 4, 2026 · 13 snapshots · as W3DWM
DEREK W MAXWELL
3916 N Potsdam Ave #525, Sioux Falls, SD 57104
43.5892, -96.6950 (street) · Grid EN13po · CQ 4 · ITU 7 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as KZ3ZZZ
DEREK W MAXWELL
104 HOMESTEAD COURT, CHALFONT, PA 18914-2049
40.2895, -75.2107 (ZIP center) · Grid FN20jg · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as KB3DZZ
DEREK W MAXWELL
104 HOMESTEAD CT, CHALFONT, PA 18914-2049
40.2796, -75.2267 (street) · Grid FN20jg · CQ 5 · ITU 8 · map ↗
Seen Nov 11, 2017 → May 6, 2019 · 6 snapshots · as W3DWM
DEREK W MAXWELL
5401 TECH CIRCLE 2ND FLOOR, MOORPARK, CA 93021
34.3052, -118.8839 (ZIP center) · Grid DM04nh · CQ 3 · ITU 6 · map ↗
Seen Mar 28, 2015 → Sep 5, 2017 · 17 snapshots · as W3DWM
DEREK W MAXWELL
124 Chestnut Street, Philadelphia, PA 19106
39.9466, -75.1422 (ZIP center) · Grid FM29kw · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 → May 22, 2014 · 11 snapshots · as W3DWM
DEREK W MAXWELL
116 S School Ln, Souderton, PA 18964
40.3035, -75.3379 (ZIP center) · Grid FN20hh · CQ 5 · ITU 8 · map ↗

Repeaters within 50 miles

27 repeaters within 50 miles of this address, closest first · sort: closest · most active · map these & export for a radio →

● confirmed on the air · ● probably · ● reported off the air · ● unknown · ◉ this license · ring = 50 miles · click a dot for the repeater's page

● confirmed on the air · ● probably · ● reported off the air · no dot = unknown (hover a dot for the evidence)

Miles	Call	Name	Output	Offset	Tone	Mode	Networks	Activity	Location
3.0	KE0WPC	Sioux Falls KE0WPC AllStar	443.8000	+5	DCS 174	FM (analog)	AllStar 632880	—	Sioux Falls, SD
3.0	KD0ZP	Sioux Falls KD0ZP EchoLink	444.9000	+5	TONE 146.2	FM (analog)	EchoLink 74079	—	Sioux Falls, SD
3.8	N0RCY	Sioux Falls SD N0RCY BM	429.0000	-1	CC1	DMR	BrandMeister 3193241	—	Sioux Falls, SD, L0C, SD
3.8	WD0EXR	Sioux Falls WD0EXR BM	443.4000	+5	CC1	DMR	BrandMeister 310165	—	Sioux Falls, SD
4.4	W0ZWY	Sioux Falls W0ZWY	146.8950	-0.6	TONE 146.2	FM (analog)		—	Sioux Falls, SD
4.4	W0ZWY	Sioux Falls W0ZWY	442.7500	+5	none	D-STAR		—	Sioux Falls, SD
4.4	W0FSD	Sioux Falls Menl W0FSD	223.8600	-1.6	TONE 146.2	FM (analog)		—	Sioux Falls, SD
4.4	KD0ZP	Sioux Falls Menl KD0ZP	444.8250	+5	TONE 103.5	FM (analog)		—	Sioux Falls, SD
5.4	KC0RFR	Sioux Falls KC0RFR	443.5000	+5	TONE 88.5	FM (analog) (FM,C4FM)		—	Sioux Falls, SD
5.9	W0ZML	Sioux Falls W0ZML AllStar	443.3000	+5	TONE 146.2	FM (analog) (DMR,FM)	AllStar 631740 BrandMeister 314644	—	Sioux Falls, SD
6.5	N4OGL	Sioux Falls N4OGL BM	446.5000	-5	CC1	DMR	BrandMeister 310677001	—	Sioux Falls, SD
25.2	KD0MC	Luverne KD0MC	147.1050	+0.6	TSQL 141.3	FM (analog)		—	Luverne, MN
27.4	N0JPE	Fairview N0JPE IRLP	146.5600	simplex	TONE 67.0	FM (analog)	IRLP 7449 IRLP 7375	—	Fairview, SD
29.3	W0ZML	Moe W0ZML	443.4000	+5	TSQL 146.2	FM (analog)		—	Moe, SD
34.1	W0DRK	Pipestone W0DRK	147.0750	+0.6	TONE 141.3	FM (analog)		—	Pipestone, MN
34.5	KB0WSV	Colman KB0WSV	443.2250	+5	TONE 146.2	FM (analog)		—	Colman, SD
35.4	KA0VHV	Beresford KA0VHV	147.2400	+0.6	TONE 141.3	FM (analog)		—	Beresford, SD
35.4	WG0F	Madison WG0F	442.7500	+5	none	D-STAR		—	Madison, SD
38.0	W0SD	Salem W0SD IRLP	145.5100	simplex	TONE 146.2	FM (analog)	IRLP 7748	—	Salem, SD
38.0	W0SD	Salem W0SD	442.0750	+5	TONE 103.5	FM (analog)		—	Salem, SD
39.4	W0VHQ	Rock Valley Perk W0VHQ	147.3000	+0.6	TSQL 110.9	FM (analog) (C4FM,FM)		—	Rock Valley, IA
41.3	W0SD	Turkey Ridge W0SD	444.9750	+5	TONE 146.2	FM (analog)		—	Turkey Ridge, SD
41.7	W0SD	Turkey Ridge W0SD	927.6000	-25	TONE 100.0	FM (analog)		—	Turkey Ridge, SD
6.2	W0ZWY offline	Sioux Falls W0ZWY	444.2000	+5	TSQL 82.5	FM (analog) (FM,C4FM)		—	Sioux Falls, SD
9.6	K0LTN offline	Harrisburg McFar K0LTN	442.4000	+5	TONE 225.7	FM (analog)		—	Harrisburg, SD
32.2	K0TGA offline	Flandreau K0TGA	146.9850	-0.6	TONE 146.2	FM (analog)		—	Flandreau, SD
35.3	KB0MRG offline	Madison KB0MRG	440.1750	+5	TONE 131.8	FM (analog)		—	Madison, SD

Vanity applications

Filed · Award	Applicant	Requested (in order)	Status
Filed Oct 28, 2004 Granted Jan 6, 2015 0001916709	KZ3ZZZ · DEREK W MAXWELL · General 104 HOMESTEAD COURT, CHALFONT, PA 18914-2049 40.2895, -75.2107 (ZIP center) · Grid FN20jg · CQ 5 · ITU 8 · map ↗	1.A3DWM 2.AA3DWM 3.W3DWM ✓ granted 4.N3DWM held	Granted got W3DWM
Filed Jul 23, 1999 Award date was Aug 10, 1999 0000019067	KB3DZZ · DEREK W MAXWELL · Technician 104 HOMESTEAD COURT, CHALFONT, PA 18914-2049 40.2895, -75.2107 (ZIP center) · Grid FN20jg · CQ 5 · ITU 8 · map ↗	1.KZ3ZZZ held 2.KA3MAX 3.KZ3MAX 4.K3MAX held	Granted