N9TPB FCC License Search

🕒 FCC license data updated today 9:45 am CDT · 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)

N3DIM HAM

General class licensed since 1988 (38 yrs) Cambridge, MD Grid FM18wn 100 repeaters within 50 mi

🔒 Not available — currently licensed, through Nov 24, 2027. If it isn't renewed, it opens for vanity requests Nov 25, 2029.

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

Currently held by THOMAS H JOHNSON · 1 holder on record

Current holder: THOMAS H JOHNSON

Held N3DIM Mar 22, 1988 → present · first licensed Mar 22, 1988 as N3DIM · 1 license · FRN 0004823266
📖 In the printed callbooks since 1983 as KA3JEV, before the FCC's online records

N3DIM Active General Mar 22, 1988 → expires Nov 24, 2027

Licensee
THOMAS H JOHNSON

Address
2407 BEECH ST
CAMBRIDGE, MD 21613-1360
38.5753, -76.0975 (street) · Grid FM18wn · CQ 5 · ITU 8 · map ↗

FRN
0004823266

Last granted
Aug 29, 2017

Effective
Aug 29, 2017

Last action
Aug 29, 2017
FCC actions (3)
- Aug 29, 2017 — License renewed LIREN
- Aug 28, 2007 — License renewed LIREN
- Feb 6, 2007 — Administrative update LIAUA

Callbook Records, 1993–2003

From the FCC amateur database as published on the QRZ! callsign CD-ROMs, 1993–2003, before and alongside the FCC's online records (which start in 1999). "Seen" dates are the first and last disc showing that record; the issue date is the FCC's, so it can be a renewal of an even older license.

Seen Mar 9, 1998 → Apr 17, 2003 · 11 discs
N3DIM · General · issued Nov 24, 1997, expires Nov 24, 2007
THOMAS H. JOHNSON
5387 CASSONS NECK RD, CAMBRIDGE, MD 21613
Seen Sep 9, 1993 → Apr 4, 1997 · 8 discs
N3DIM · General · issued Mar 22, 1988, expires Mar 22, 1998 · previously KA3JEV (Novice)
THOMAS H JOHNSON
5387 CASSONS NECK RD, CAMBRIDGE, MD 21613

Address history

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

Seen Sep 5, 2017 → Oct 18, 2026 · 22 snapshots · as N3DIM
THOMAS H JOHNSON
2407 BEECH ST, CAMBRIDGE, MD 21613-1360
38.5753, -76.0975 (street) · Grid FM18wn · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 → May 12, 2017 · 27 snapshots · as N3DIM
THOMAS H JOHNSON
2407 Beech St., CAMBRIDGE, MD 21613-1360
38.5028, -76.0789 (ZIP center) · Grid FM18xm · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 · 1 snapshot · as N3DIM
THOMAS H JOHNSON
5387 CASSONS NECK RD, CAMBRIDGE, MD 21613
38.5028, -76.0789 (ZIP center) · Grid FM18xm · CQ 5 · ITU 8 · map ↗

N3DIM in the Printed Callbooks, 1909–1997

From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.

1997 · 1 edition
N3DIM · class G
Thomas H Johnson
5j87 Cassons Neck Rd, Cambridge, MD 21613
1997 p.464
1996 · 1 edition
N3DIM · class G
Thomas H Johnson
53b7 Cassons Neck Rd, Cambridge, MD 11613
1996 p.452
1995 · 1 edition
N3DIM · class G
Thomas H Johnson
53s7 Cassons Neck Rd, Cambri Ge, MO 11613
1995 p.467
1994 · 1 edition
N3DIM · class G
Thomas H Johnson
5387 Cassons Neck Rd, Cambridge, MD 21613
1994 p.411
1984 → 1985 · 2 editions
N3DIM · class G
Thomas H Johnson
Pob 604, Cambridge Md 1161j
Winter 1984 p.331, Winter 1985 p.328

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for N3DIM in the last 24 hours. They show up here within seconds of N3DIM beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 Miles

100 repeaters within 50 miles of this address, most active 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
37.5	W3VPR	Davidsonville W3VPR	147.1050	+0.6	TONE 107.2	FM (analog)	🗓 6 nets	6 nets · 772 check-ins · 87 stations	Davidsonville, MD
37.5	W3VPR	Davidsonville W3VPR	223.8800	-1.6	TONE 107.2	FM (analog)	🗓 6 nets	6 nets · 772 check-ins · 87 stations	Davidsonville, MD
37.5	W3VPR	Davidsonville W3VPR	444.4000	+5	TSQL 107.2	FM (analog)	🗓 6 nets	6 nets · 772 check-ins · 87 stations	Davidsonville, MD
40.8	W3VPR	Crownsville W3VPR EchoLink	147.0750	+0.6	TSQL 107.2	FM (analog)	EchoLink 524902 🗓 6 nets	6 nets · 772 check-ins · 87 stations	Crownsville, MD
45.9	W3VPR	Millersville W3VPR	224.5600	-1.6	TONE 107.2	FM (analog)	🗓 6 nets	6 nets · 772 check-ins · 87 stations	Millersville, MD
44.6	KC3ARC	Woodside KC3ARC	146.9100	-0.6	TONE 77.0	FM (analog) (FM,C4FM)	🗓 7 nets	7 nets · 178 check-ins · 46 stations	Woodside, DE
44.6	KC3ARC	Woodside KC3ARC	444.5500	+5	TSQL 77.0	FM (analog)	🗓 7 nets	7 nets · 178 check-ins · 46 stations	Woodside, DE
30.3	K3HKI	Lexington Park K3HKI	146.6400	-0.6	TSQL 146.2	FM (analog)	🗓 4 nets	4 nets · 134 check-ins · 51 stations	Lexington Park, MD
47.3	K3ERA	District Heights K3ERA EchoLink	145.2300	-0.6	TSQL 110.9	FM (analog) (FM,C4FM)	EchoLink 294165 🗓 2 nets	2 nets · 63 check-ins · 19 stations	District Heights, MD
50.0	K3ERA	Lanham DC Hosp K3ERA	447.3250	-5	TONE 110.9	FM (analog)	🗓 2 nets	2 nets · 63 check-ins · 19 stations	Lanham, MD
36.1	N3PX	Mechanicsville N3PX	147.1950	+0.6	TSQL 156.7	FM (analog)	🗓 1 net	1 net · 46 check-ins · 13 stations	Mechanicsville, MD
34.7	KC3FOQ	Leonardtown Fair KC3FOQ	443.3000	+5	TONE 123.0	FM (analog) (FM,C4FM)	🗓 2 nets	2 nets · 19 check-ins · 13 stations	Leonardtown, MD
34.7	KC3FOQ	Leonardtown Fair KC3FOQ	147.3900	+0.6	TONE 146.2	FM (analog) (FM,C4FM)	🗓 2 nets	2 nets · 19 check-ins · 13 stations	Leonardtown, MD
23.0	K3CAL	Lusby Appeal K3CAL EchoLink	444.9500	+5	TSQL 156.7	FM (analog) (FM,C4FM)	EchoLink 389207 🗓 1 net	1 net	Lusby, MD
27.7	K3CAL	Sunderland K3CAL EchoLink	146.9850	-0.6	TONE 156.7	FM (analog) (FM,C4FM)	EchoLink 389207 🗓 1 net	1 net	Sunderland, MD
44.7	KA2JAI	Millersville KA2JAI EchoLink	146.8050	-0.6	TSQL 107.2	FM (analog)	EchoLink 🗓 1 net	1 net	Millersville, MD
4.4	K3EMD	Easton K3EMD WIRES-X	147.0450	+0.6	TSQL 156.7	FM (analog)	WIRES-X 43142	—	Easton, MD
6.6	N3YMS	Trappe N3YMS Interstate	442.5375	+5	CC1	DMR	Interstate	—	Trappe, MD
13.5	K3EMD	Easton URM Ctr K3EMD WIRES-X	442.2000	+5	TSQL 156.7	FM (analog) (FM,C4FM)	WIRES-X 33142	—	Easton, MD
19.4	N3KNT	Federalsburg N3KNT Interstate	442.0500	+5	CC1	DMR	Interstate-2-Network	—	Federalsburg, MD
20.2	K3DRC	Salisbury WMDT K3DRC	146.8200	-0.6	TSQL 156.7	FM (analog)		—	Salisbury, MD
21.3	KB2SKP	Lexington Park KB2SKP BM	446.0125	in 433.0125	CC1	DMR	BrandMeister 314491901	—	Lexington Park, MD
23.1	WG3K	Chesapeake Beach WG3K BM	444.3500	+5	none	D-STAR (DMR,DV)	BrandMeister 312393	—	Chesapeake Beach, MD
24.4	N3MRG	Tyaskin Muddy N3MRG	146.8650	-0.6	CC1	DMR		—	Tyaskin, MD
26.3	W1JD	Mechanicsville W1JD BM	439.8750	-5	CC8	DMR	BrandMeister 3124132	—	Mechanicsville, MD
26.6	N3KNT	Seaford N3KNT EchoLink	146.7150	-0.6	TONE 156.7	FM (analog)	EchoLink 959058	—	Seaford, DE
26.7	W3TBG	Seaford W3TBG	444.9000	+5	TONE 156.7	FM (analog)		—	Seaford, DE
26.7	N3YMS	Seaford N3YMS Interstate	442.8125	+5	CC1	DMR	Interstate	—	Seaford, DE
26.7	N3PPH	Prince Frederick N3PPH Interstate	441.3875	+5	CC1	DMR	Interstate-3	—	Prince Frederick, MD
27.0	W3PQS	Prince Frederick W3PQS	53.1700	-1	TSQL 100.0	FM (analog)		—	Prince Frederick, MD
27.7	N3PPH	Sunderland Mt N3PPH Interstate	441.6375	+5	CC1	DMR	Interstate-2	—	Sunderland, MD
27.7	W3TBG	Seaford WSUX W3TBG WIRES-X	145.2100	-0.6	TONE 156.7	FM (analog) (FM,C4FM)	WIRES-X 46540	—	Seaford, DE
28.0	K3GGM	Hollywood K3GGM BM	446.5000	-5	CC1	DMR	BrandMeister 3211901	—	Hollywood, MD
28.2	N3FI	Barstow N3FI	443.7000	+5	TSQL 179.9	FM (analog) (FM,C4FM)		—	Barstow, MD
28.3	W3SMD	Barstow W3SMD AllStar	223.9000	-1.6	TONE 186.2	FM (analog)	AllStar 513100	—	Barstow, MD
29.7	W3BPT	Hollywood W3BPT Interstate	146.8500	-0.6	CC1	DMR	Interstate-3	—	Hollywood, MD
29.8	KB2SKP	Lexington Park KB2SKP WIRES-X	445.2500	-5	DG-ID 00-00	Fusion (C4FM)	WIRES-X 74906	—	Lexington Park, MD
30.3	N3PPH	Hollywood Fire N3PPH	145.3500	-0.6	TONE 156.7	FM (analog)		—	Hollywood, MD
30.4	KB3FWW Offline	Hollywood KB3FWW IRLP	449.4900	simplex	TSQL 146.2	FM (analog)	IRLP 8856	—	Hollywood, MD
30.8	W3PRO	Salisbury W3PRO	145.2800	-0.6	none	D-STAR		—	Salisbury, MD
30.8	W3PRO	Salisbury W3PRO	146.9250	-0.6	TSQL 156.7	FM (analog)		—	Salisbury, MD
30.8	N3MRG	Salisbury N3MRG Interstate	442.6500	+5	CC6	DMR	Interstate	—	Salisbury, MD
30.8	K3RIC	Salisbury K3RIC	444.0500	+5	none	FM (analog) (FM,C4FM)		—	Salisbury, MD
30.8	W3PRO	Salisbury W3PRO	444.2000	+5	none	D-STAR		—	Salisbury, MD
30.9	K3OCM	Salisbury K3OCM K4USD	442.6500	+5	CC6	DMR	K4USD	—	Salisbury, MD
31.3	N3YMS	Eden N3YMS Interstate	441.8875	+5	CC2	DMR	Interstate	—	Eden, MD
31.3	W3GAB	Stevensville W3GAB BM	433.8000	+5	CC1	DMR	BrandMeister 321788101	—	Stevensville, MD
31.3	N3PPH	Mechanicsville N3PPH Interstate	441.7875	+5	CC1	DMR	Interstate-2	—	Mechanicsville, MD
31.6	W3WMD	Greenwood W3WMD	224.4400	-1.6	none	FM (analog)		—	Greenwood, DE
32.3	W3ETC	Centreville W3ETC	927.6500	-25	TSQL 156.7	FM (analog) (FM,P25)		—	Centreville, MD
32.3	KE3AO	Centreville KE3AO	146.9400	-0.6	TONE 107.2	FM (analog)		—	Centreville, MD
32.3	K3QAC	Centreville K3QAC	448.2250	-5	TONE 107.2	FM (analog) (FM,C4FM)		—	Centreville, MD
33.8	KA3MRX	Princess Anne KA3MRX	146.6250	-0.6	TONE 156.7	FM (analog)		—	Princess Anne, MD
33.9	N3LHD	Aquasco N3LHD Interstate	442.4625	+5	CC1	DMR	Interstate-c-Bridge-1	—	Aquasco, MD
36.3	N3HAZ	Annapolis N3HAZ BM	439.5500	in 433.5500	CC1	DMR	BrandMeister 3197367	—	Annapolis, MD
36.9	KB3IWV	Harrington KB3IWV	442.4500	+5	TONE 127.3	FM (analog)		—	Harrington, DE
37.7	KB3CMA	Annapolis Broad KB3CMA Interstat	441.8375	+5	CC1	DMR	Interstate-3	—	Annapolis, MD
37.7	KB3CMA	Annapolis Broad KB3CMA	442.3000	+5	TSQL 107.2	FM (analog) (C4FM,FM)		—	Annapolis, MD
37.8	K3OCM	Charlotte Hall K3OCM K4USD-Net	443.1875	+5	CC6	DMR	K4USD-Net	—	Charlotte Hall, MD
37.8	W3OR	Westover W3OR	145.3200	-0.6	none	FM (analog)		—	Westover, MD
39.7	KC3FCQ	Arnold KC3FCQ BM	442.8750	+5	CC1	DMR	BrandMeister 312411801	—	Arnold, MD
39.7	N3KUN	Chaptico N3KUN	145.2500	-0.6	TONE 110.9	FM (analog)		—	Chaptico, MD
41.4	WA3YUV	Brandywine WA3YUV	443.6000	+5	TSQL 103.5	FM (analog) (FM,C4FM)		—	Brandywine, MD
42.1	W3OR	Crisfield McCrea W3OR	145.1300	-0.6	CC1	DMR		—	Crisfield, MD
42.3	W3SMR	Brandywine W3SMR	147.1500	+0.6	TSQL 114.8	FM (analog)		—	Brandywine, MD
42.6	N3YMS	Hazlettville N3YMS Interstate	448.0750	-5	CC2	DMR	Interstate-2-Network	—	Hazlettville, DE
43.0	N3RKT	Crisfield N3RKT WIRES-X	145.1100	-0.6	TSQL 156.7	FM (analog) (FM,C4FM)	WIRES-X 30213	—	Crisfield, MD
43.5	KC3DVC	Crisfield KC3DVC Interstat	145.1300	-0.6	CC1	DMR	Interstate	—	Crisfield, MD
43.6	WS3EOC	Millsboro WS3EOC	443.2000	+5	TONE 156.7	FM (analog) (FM,C4FM)		—	Millsboro, DE
43.6	WS3ARA	Millsboro WS3ARA EchoLink	147.0900	+0.6	TONE 156.7	FM (analog)	EchoLink 622721	—	Millsboro, DE
43.6	WS3ARA	Millsboro WS3ARA	449.8250	-5	TONE 156.7	FM (analog) (FM,C4FM)		—	Millsboro, DE
43.6	WS3ARA	Millsboro WS3ARA	224.8400	-1.6	TONE 156.7	FM (analog)		—	Millsboro, DE
43.6	N3LHD	Upper Marlboro N3LHD Interstate	444.6500	+5	CC6	DMR	Interstate-c-Bridge-1	—	Upper Marlboro, MD
43.8	N3YMS	Frederica N3YMS Interstate	449.7250	-5	CC1	DMR	Interstate	—	Frederica, DE
44.4	K3ARS	Chestertown Shor K3ARS	449.1750	-5	TONE 156.7	FM (analog)		—	Chestertown, MD
44.4	N3SCP	Gambrills N3SCP WIRES-X	447.5500	-5	DG-ID 00-00	Fusion (C4FM)	WIRES-X 18557	—	Gambrills, MD
44.5	N3SCP	Gambrills N3SCP WIRES-X	442.5500	+5	TONE 107.2	FM (analog) (FM,C4FM)	WIRES-X 18557	—	Gambrills, MD
44.5	N3YMS	Chestertown N3YMS Interstate	441.6625	+5	CC1	DMR	Interstate	—	Chestertown, MD
44.6	KP4IP Offline	Millersville KP4IP BM	442.4000	+5	CC1	DMR	BrandMeister 310148	—	Millersville, MD
44.7	N3YMS	Hazlettville N3YMS	147.3000	+0.6	TSQL 77.0	FM (analog)		—	Hazlettville, DE
44.8	W4ATN	Largo W4ATN MARC	443.7875	+5	CC3	DMR	DMR-MARC	—	Largo, MD
45.3	KR3LC	Pasadena KR3LC BM	433.4500	in 446.4500	CC1	DMR	BrandMeister 312414103	—	Pasadena, MD
45.5	K3BAY Offline	Pasadena K3BAY IRLP	145.5400	simplex	TSQL 107.2	FM (analog)	IRLP 4717	—	Pasadena, MD
45.5	KB3IAI	Gambrills KB3IAI BM	439.9000	in 438.2000	CC1	DMR	BrandMeister 3172111	—	Gambrills, MD
45.9	W3CU	Millersville W3CU EchoLink	146.8050	-0.6	TONE 107.2	FM (analog)	EchoLink 90911	—	Millersville, MD
45.9	W3CU	Millersville W3CU	449.1250	-5	TONE 107.2	FM (analog) (FM,C4FM)		—	Millersville, MD
46.1	N3YMS	Dagsboro N3YMS Interstate	443.1000	+5	CC1	DMR	Interstate	—	Dagsboro, DE
46.4	N3DN	Camden N3DN BM	447.8750	-5	CC1	DMR	BrandMeister 314964	—	Camden, DE
46.9	K6XH	Callao K6XH BM	443.0875	+5	CC1	DMR	BrandMeister 314364	—	Callao, VA
47.3	W3XJ Offline	Bowie W3XJ	442.1500	+5	none	FM (analog)		—	Bowie, MD
47.4	N3IOC	Wyoming N3IOC	449.7750	-5	TONE 114.8	FM (analog)		—	Wyoming, DE
48.1	WS3ARA	Selbyville WS3ARA WIRES-X	147.0150	+0.6	TONE 156.7	FM (analog) (C4FM,FM)	WIRES-X 30017	—	Selbyville, DE
48.8	W3CPO	Glen Burnie W3CPO BM	448.5000	-5	CC1	DMR	BrandMeister 312442201	—	Glen Burnie, MD
48.8	K3ARS	Worton K3ARS AllStar	147.3750	+0.6	TSQL 156.7	FM (analog)	AllStar 497350	—	Worton, MD
48.8	K3ARS	Worton K3ARS BM	447.7375	-5	CC1	DMR	BrandMeister 312414	—	Worton, MD
48.8	K3ARS	Worton K3ARS BM	442.7375	+5	CC1	DMR	BrandMeister 312414	—	Worton, MD
49.3	W3GMD	Lewes WGMD W3GMD	443.5500	+5	TONE 156.7	FM (analog) (FM,C4FM)		—	Lewes, DE
49.5	N3LPV	Glen Burnie N3LPV EchoLink	146.5650	in 144.6000	none	FM (analog)	EchoLink 242213	—	Glen Burnie, MD
49.5	N3MIR	Glen Burnie N3MIR	442.6000	+5	TONE 127.3	FM (analog)		—	Glen Burnie, MD
49.9	W4NNK	Heathsville W4NNK	147.3300	+0.6	TONE 100.0	FM (analog)		—	Heathsville, VA