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

N3SLP HAM

📻

Previously held a GMRS license

WQQG339

Expired Dec 4, 2017 · same FCC Registration Number (FRN) · GMRS covers the licensee's immediate family

General class licensed since 2014 (12 yrs) N3SLP since 2014 · previously KC3CKK Arnold, MD grid FM19rb LoTW user 274 repeaters within 50 mi

🔒 Not available — currently licensed, through May 10, 2034. If it isn't renewed, it opens for vanity requests May 11, 2036.

📬 QSL: LoTW user · last upload Nov 19, 2014 · not eQSL AG · QRZ · HamQTH

📝 N3SLP has filed vanity applications before — latest filed Apr 22, 2014 · what was requested

Currently held by MATTHEW D ZINDER · 2 holders on record

Current holder: MATTHEW D ZINDER

Held N3SLP May 10, 2014 → present · first licensed Mar 31, 2014 as KC3CKK · 2 licenses · FRN 0022228159

N3SLP Active General · vanity May 10, 2014 → expires May 10, 2034

Licensee
MATTHEW D ZINDER

Address
406 Kings College Dr
ARNOLD, MD 21012
39.0473, -76.5048 (street) · Grid FM19rb · CQ 5 · ITU 8 · map ↗

FRN
0022228159

Previous call
KC3CKK (Technician)

Last granted
May 14, 2025

Effective
May 16, 2025

Last action
May 16, 2025
FCC actions (5)
- May 16, 2025 — Administrative update LIAUA
- May 14, 2025 — License renewed LIREN
- Aug 27, 2014 — License modified LIMOD
- May 10, 2014 — Vanity call sign granted VANGRT
- May 10, 2014 — License issued LIISS
KC3CKK Canceled Technician Mar 31, 2014 → May 10, 2014 (canceled)

Licensee
Matthew D Zinder

Address
406 Kings College Dr
Arnold, MD 21012
39.0473, -76.5048 (street) · Grid FM19rb · CQ 5 · ITU 8 · map ↗

FRN
0022228159

Last granted
Mar 31, 2014

Effective
Mar 31, 2014

Last action
May 10, 2014
FCC actions (3)
- May 10, 2014 — License canceled LICAN
- Mar 31, 2014 — License issued LIISS
- Mar 31, 2014 — 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 May 22, 2014 → Oct 4, 2026 · 74 snapshots · as KC3CKK
Matthew D Zinder
406 Kings College Dr, Arnold, MD 21012
39.0473, -76.5048 (street) · Grid FM19rb · CQ 5 · ITU 8 · map ↗

Previous holder: ROGER F LITTLE

Held N3SLP Jul 13, 1994 → Jul 13, 2004 · first licensed Jul 13, 1994 as N3SLP · 1 license · no FRN on file (pre-2001 records)

N3SLP Expired Technician Jul 13, 1994 → Jul 13, 2004 (expired)

Licensee
ROGER F LITTLE

Address
4602 EADES ST
ROCKVILLE, MD 20853
39.1017, -77.0946 (ZIP center) · Grid FM19kc · CQ 5 · ITU 8 · map ↗

Last granted
Jul 13, 1994

Effective
Jul 13, 1994

Last action
May 14, 2025
FCC actions (1)
- Jul 14, 2006 — 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 N3SLP
ROGER F LITTLE
4602 EADES ST, ROCKVILLE, MD 20853
39.1017, -77.0946 (ZIP center) · Grid FM19kc · CQ 5 · ITU 8 · map ↗

Vanity applications filed by N3SLP

Calls this licensee has asked the FCC for, newest first, in their order of preference. The FCC processes applications 18 days after filing; "likely award" is our estimate from every pending application in filing order.

Filed · Award	Applicant	Requested (in order)	Status
Filed Apr 22, 2014 Granted May 14, 2025 0006246390	KC3CKK · Matthew D Zinder · Technician Attn: Matthew Zinder · 406 Kings College Dr, Arnold, MD 21012 39.0473, -76.5048 (street) · Grid FM19rb · CQ 5 · ITU 8 · map ↗	1.N3SLP ✓ granted 2.N3MDZ held 3.N3ZAA available 4.KC3ZZZ held 5.N4RSI held	Granted got N3SLP

Others requesting N3SLP

1 application listed N3SLP as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Apr 22, 2014	May 10, 2014	KC3CKK · Matthew D Zinder · Arnold, MD	1	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for N3SLP in the last 24 hours. They show up here within seconds of N3SLP beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 miles

274 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
0.4	KC3FCQ	Arnold KC3FCQ BM	442.8750	+5	CC1	DMR	BrandMeister 312411801	—	Arnold, MD
4.0	N3HAZ	Annapolis N3HAZ BM	439.5500	in 433.5500	CC1	DMR	BrandMeister 3197367	—	Annapolis, MD
5.7	KB3CMA	Annapolis Broad KB3CMA	442.3000	+5	TSQL 107.2	FM (analog) (C4FM,FM)		—	Annapolis, MD
5.7	KB3CMA	Annapolis Broad KB3CMA Interstat	441.8375	+5	CC1	DMR	Interstate-3	—	Annapolis, MD
6.1	W3VPR	Crownsville W3VPR EchoLink	147.0750	+0.6	TSQL 107.2	FM (analog)	EchoLink 524902 🗓 5 nets	5 nets · 553 check-ins · 79 stations	Crownsville, MD
6.3	KR3LC	Pasadena KR3LC BM	433.4500	in 446.4500	CC1	DMR	BrandMeister 312414103	—	Pasadena, MD
7.2	W3CU	Millersville W3CU EchoLink	146.8050	-0.6	TONE 107.2	FM (analog)	EchoLink 90911	—	Millersville, MD
7.2	W3VPR	Millersville W3VPR	224.5600	-1.6	TONE 107.2	FM (analog)	🗓 5 nets	5 nets · 553 check-ins · 79 stations	Millersville, MD
7.2	W3CU	Millersville W3CU	449.1250	-5	TONE 107.2	FM (analog) (FM,C4FM)		—	Millersville, MD
7.7	KA2JAI	Millersville KA2JAI EchoLink	146.8050	-0.6	TSQL 107.2	FM (analog)	EchoLink 🗓 1 net	1 net	Millersville, MD
9.0	N3SCP	Gambrills N3SCP WIRES-X	447.5500	-5	DG-ID 00-00	Fusion (C4FM)	WIRES-X 18557	—	Gambrills, MD
9.0	N3SCP	Gambrills N3SCP WIRES-X	442.5500	+5	TONE 107.2	FM (analog) (FM,C4FM)	WIRES-X 18557	—	Gambrills, MD
9.5	W3CPO	Glen Burnie W3CPO BM	448.5000	-5	CC1	DMR	BrandMeister 312442201	—	Glen Burnie, MD
10.2	N3LPV	Glen Burnie N3LPV EchoLink	146.5650	in 144.6000	none	FM (analog)	EchoLink 242213	—	Glen Burnie, MD
10.2	N3MIR	Glen Burnie N3MIR	442.6000	+5	TONE 127.3	FM (analog)		—	Glen Burnie, MD
10.3	KB3IAI	Gambrills KB3IAI BM	439.9000	in 438.2000	CC1	DMR	BrandMeister 3172111	—	Gambrills, MD
11.6	W3GAB	Stevensville W3GAB BM	433.8000	+5	CC1	DMR	BrandMeister 321788101	—	Stevensville, MD
12.8	W3VPR	Davidsonville W3VPR	147.1050	+0.6	TONE 107.2	FM (analog)	🗓 5 nets	5 nets · 553 check-ins · 79 stations	Davidsonville, MD
12.8	W3VPR	Davidsonville W3VPR	223.8800	-1.6	TONE 107.2	FM (analog)	🗓 5 nets	5 nets · 553 check-ins · 79 stations	Davidsonville, MD
12.8	W3VPR	Davidsonville W3VPR	444.4000	+5	TSQL 107.2	FM (analog)	🗓 5 nets	5 nets · 553 check-ins · 79 stations	Davidsonville, MD
13.6	KD3CXK	Brooklyn KD3CXK BM	439.0650	-1	CC1	DMR	BrandMeister 3223379	—	Brooklyn, MD
13.6	KC3APF	Dundalk Key KC3APF WIRES-X	448.6750	-5	TONE 91.5	FM (analog) (FM,C4FM)	WIRES-X 30068	—	Dundalk, MD
16.1	WA3DZD	Jessup WA3DZD	146.7600	-0.6	TSQL 107.2	FM (analog)		—	Jessup, MD
16.1	WA3DZD	Jessup WA3DZD	444.0000	+5	TSQL 107.2	FM (analog)		—	Jessup, MD
16.1	KA3LAO	Jessup KA3LAO Interstat	442.7125	+5	CC1	DMR	Interstate-2-Network	—	Jessup, MD
17.0	WA3KOK	Baltimore Haleth WA3KOK	442.2500	+5	TSQL 107.2	FM (analog) (FM,P25)		—	Baltimore, MD
18.0	K3LPV	Essex K3LPV BM	449.9000	-5	CC1	DMR	BrandMeister 310588	—	Essex, MD
18.0	K3LPV	Essex K3LPV	449.2000	simplex	CC?	DMR		—	Essex, MD
18.4	N3CDY	Baltimore N3CDY Interstate	927.0625	-25	CC1	DMR	Interstate	—	Baltimore, MD
18.5	WA3KOK	Laurel WA3KOK IRLP	446.5000	simplex	TSQL 100.0	FM (analog)	IRLP 4332	—	Laurel, MD
18.6	KB3HGW	Jessup KB3HGW BM	448.8000	-5	CC1	DMR	BrandMeister 321114701	—	Jessup, MD
18.8	W3LRC	Laurel W3LRC	442.5000	+5	TONE 156.7	FM (analog)		—	Laurel, MD
18.8	W4ATN	Laurel W4ATN	443.8000	+5	CC3	DMR		—	Laurel, MD
18.8	W4ATN	Laurel W4ATN	145.3900	-0.6	none	FM (analog)		—	Laurel, MD
19.0	N3LHD	Upper Marlboro N3LHD Interstate	444.6500	+5	CC6	DMR	Interstate-c-Bridge-1	—	Upper Marlboro, MD
19.3	W3PGA	Baltimore KHS W3PGA	147.2400	+0.6	TSQL 123.0	FM (analog) (FM,C4FM)		—	Baltimore, MD
19.4	W3PGA	Baltimore KHS W3PGA	449.5750	-5	TSQL 123.0	FM (analog) (FM,C4FM)		—	Baltimore, MD
19.4	W3SQN	Laurel W3SQN BM	442.9000	+5	CC1	DMR	BrandMeister 312418	—	Laurel, MD
19.6	N3EMC	Middle River N3EMC AllStar	927.7000	-25	TSQL 156.7	FM (analog) (DMR,FM)	AllStar 67341 EchoLink 506758 TGIF	—	Middle River, MD
19.9	K3ERA	Lanham DC Hosp K3ERA	447.3250	-5	TONE 110.9	FM (analog)	🗓 2 nets	2 nets · 39 check-ins · 15 stations	Lanham, MD
20.1	WA3NAN	Greenbelt WA3NAN	146.8350	-0.6	TONE 114.8	FM (analog)		—	Greenbelt, MD
20.1	W3GMR	Greenbelt W3GMR	146.8800	-0.6	TSQL 77.0	FM (analog)		—	Greenbelt, MD
20.1	N3EST	Middle River N3EST	147.3450	+0.6	TONE 192.8	FM (analog)		—	Middle River, MD
20.1	WB3FFV	Middle River MD WB3FFV BM	438.0150	-5	CC1	DMR	BrandMeister 322199401	—	Middle River, MD FM1, MD
20.2	W3DAK	Middle River W3DAK EchoLink	447.3750	-5	TONE 67.0	FM (analog) (DMR,FM)	EchoLink 823021 BrandMeister 312299	—	Middle River, MD
21.1	W4ATN	Largo W4ATN MARC	443.7875	+5	CC3	DMR	DMR-MARC	—	Largo, MD
21.8	W3CAM	Columbia W3CAM	224.8600	-1.6	none	FM (analog)		—	Columbia, MD
21.9	KC3OQK	Ellicott City KC3OQK BM	439.0000	-5	CC1	DMR	BrandMeister 3159601	—	Ellicott City, MD
21.9	KC3OQK	Ellicott City KC3OQK BM	449.0000	-5	CC1	DMR	BrandMeister 315960101	—	Ellicott City, MD
21.9	N3EZD	Ellicott City N3EZD	224.3200	-1.6	none	FM (analog)		—	Ellicott City, MD
21.9	N3EZD	Ellicott City N3EZD	449.5250	-5	TONE 100.0	FM (analog)		—	Ellicott City, MD
22.7	K3CUJ	Columbia K3CUJ	147.1350	+0.6	TSQL 156.7	FM (analog) (FM,C4FM)		—	Columbia, MD
22.9	N3SBP	Parkville N3SBP BM	223.8000	-1.6	CC1	DMR	BrandMeister 312410402 BrandMeister 314562	—	Parkville, MD
23.0	KG1JAG	Town L0C4T0R KG1JAG BM	446.5000	-5	CC1	DMR	BrandMeister 321925001	—	Town, L0C4T0R, MD
23.5	KY3O	Calverton KY3O BM	438.4500	-5	CC1	DMR	BrandMeister 318573701	—	Calverton, MD
23.5	W3ETC	Centreville W3ETC	927.6500	-25	TSQL 156.7	FM (analog) (FM,P25)		—	Centreville, MD
23.5	KE3AO	Centreville KE3AO	146.9400	-0.6	TONE 107.2	FM (analog)		—	Centreville, MD
23.5	KE3AO	Centreville KE3AO	448.2250	-5	TONE 107.2	FM (analog) (FM,C4FM)		—	Centreville, MD
23.6	WA3RF	Cheverly WA3RF AllStar	441.0000	+5	TONE 173.8	FM (analog)	AllStar 57512	—	Cheverly, MD
24.0	W3EAX	College Park UMD W3EAX EchoLink	145.4900	-0.6	none	FM (analog)	EchoLink 318547	—	College Park, MD
24.2	K3GMR	Bladensburg K3GMR EchoLink	146.6100	-0.6	TSQL 77.0	FM (analog)	EchoLink 796114	—	Bladensburg, MD
24.7	K3OCM	Towson K3OCM K4USD-Net	443.8500	+5	CC6	DMR	K4USD-Net	—	Towson, MD
24.7	K3ERA	District Heights K3ERA EchoLink	145.2300	-0.6	TSQL 110.9	FM (analog) (FM,C4FM)	EchoLink 294165 🗓 2 nets	2 nets · 39 check-ins · 15 stations	District Heights, MD
24.9	K3CUJ	Columbia K3CUJ WIRES-X	449.4750	-5		Fusion (C4FM)	WIRES-X 30215	—	Columbia, MD
25.0	W3FT	Towson W3FT EchoLink	146.6700	-0.6	TONE 107.2	FM (analog)	EchoLink 286640	—	Towson, MD
25.0	WR3IRS	Towson WR3IRS Interstat	441.4000	+5	CC1	DMR	Interstate	—	Towson, MD
25.0	N3CDY	Towson N3CDY	449.2750	-5	TONE 107.2	FM (analog) (FM,P25)		—	Towson, MD
25.1	W3DHS	Towson W3DHS	145.1400	-0.6	TONE 114.8	D-STAR		—	Towson, MD
25.1	W3DHS	Towson W3DHS EchoLink	145.3300	-0.6	TONE 114.8	FM (analog)	EchoLink 217618	—	Towson, MD
25.1	WB3DZO	Towson WB3DZO	147.0300	+0.6	TONE 156.7	FM (analog)		—	Towson, MD
25.1	W3DHS	Towson W3DHS	442.1125	+5	TONE 114.8	D-STAR		—	Towson, MD
25.3	N3TUK	Adelphi N3TUK AllStar	443.6625	+5	CC1	DMR	AllStar 43105 BrandMeister 313057	—	Adelphi, MD
25.3	W3JEH	Perry Hall W3JEH	223.8400	-1.6	none	FM (analog)		—	Perry Hall, MD
26.2	N3YMS	Chestertown N3YMS Interstate	441.6625	+5	CC1	DMR	Interstate	—	Chestertown, MD
26.2	K3CAL	Sunderland K3CAL EchoLink	146.9850	-0.6	TONE 156.7	FM (analog) (FM,C4FM)	EchoLink 389207 🗓 1 net	1 net	Sunderland, MD
26.2	N3PPH	Sunderland Mt N3PPH Interstate	441.6375	+5	CC1	DMR	Interstate-2	—	Sunderland, MD
26.3	K3ARS	Chestertown Shor K3ARS	449.1750	-5	TONE 156.7	FM (analog)		—	Chestertown, MD
26.7	N3AGB	Ashton N3AGB	53.2500	-1	TSQL 100.0	FM (analog)		—	Ashton, MD
26.7	KC3BXH	Ashton KC3BXH EchoLink	147.0000	-0.6	TONE 156.7	FM (analog) (FM,P25)	EchoLink 105440	—	Ashton, MD
26.7	K3WX	Ashton K3WX	224.5400	-1.6	TONE 156.7	FM (analog)		—	Ashton, MD
26.7	KC3BXH	Ashton KC3BXH	443.1500	+5	TSQL 156.7	FM (analog) (FM,P25)		—	Ashton, MD
26.7	KC3BXH	Ashton KC3BXH IRLP	927.7250	-25	TONE 156.7	FM (analog)	IRLP 4088	—	Ashton, MD
27.0	K3VOA	Silver Spring K3VOA AllStar	447.5750	-5	TONE 77.0	FM (analog)	AllStar 23919	—	Silver Spring, MD
27.0	WB3DZO	Randallstown WB3DZO	443.3500	+5	TSQL 156.7	FM (analog) (FM,C4FM)		—	Randallstown, MD
27.3	N3HIA	Joppa N3HIA EchoLink	224.4800	-1.6	TONE 100.0	FM (analog)	EchoLink 245186	—	Joppa, MD
27.5	K3ARS	Worton K3ARS AllStar	147.3750	+0.6	TSQL 156.7	FM (analog)	AllStar 497350	—	Worton, MD
27.5	K3ARS	Worton K3ARS BM	447.7375	-5	CC1	DMR	BrandMeister 312414	—	Worton, MD
27.5	K3ARS	Worton K3ARS BM	442.7375	+5	CC1	DMR	BrandMeister 312414	—	Worton, MD
28.1	WA3KOK	Ashton WA3KOK	444.0500	+5	none	FM (analog) (FM,P25)		—	Ashton, MD
28.2	WA3KOK	Ashton WA3KOK Interstat	442.2375	+5	none	FM (analog) (DMR,FM)	Interstate-Network	—	Ashton, MD
28.2	W3MFP	Wheaton W3MFP BM	442.8875	+5	CC5	DMR	BrandMeister 312428101	—	Wheaton, MD
28.3	KA3LAO	Silver Spring KA3LAO	147.1800	+0.6	TONE 156.7	FM (analog) (FM,P25)		—	Silver Spring, MD
28.3	WB3GXW	Silver Spring WB3GXW EchoLink	147.2250	+0.6	TONE 156.7	FM (analog)	EchoLink 147225	—	Silver Spring, MD
28.3	N3AUY	Silver Spring N3AUY	29.6600	-0.1	TSQL 141.3	FM (analog)		—	Silver Spring, MD
28.3	N3AUY	Silver Spring N3AUY	449.0250	-5	TONE 156.7	FM (analog)		—	Silver Spring, MD
28.7	K3WS	Washington K3WS AllStar	443.3750	-5	TONE 123.0	FM (analog)	AllStar 27701	—	Washington, DC
28.7	K3WS	Washington K3WS AllStar	447.3750	-5	TONE 123.0	FM (analog)	AllStar 27701	—	Washington, DC
28.8	N3VSI	Larry - Edgewood N3VSI AllStar	442.9000	+5	TONE 127.3	FM (analog)	AllStar 28094 AllStar 497352	—	Larry - Edgewood, MD
28.8	W3KIT	SHARI-UHF W3KIT AllStar	438.2875	simplex	TONE 203.5	FM (analog)	AllStar 547612 AllStar 547619	—	SHARI-UHF Maryland, MD
29.0	W3YVV	Dayton W3YVV	927.5375	-25	TSQL 156.7	FM (analog)		—	Dayton, MD
29.1	WG3K	Chesapeake Beach WG3K BM	444.3500	+5	none	D-STAR (DMR,DV)	BrandMeister 312393	—	Chesapeake Beach, MD
29.2	W3AGB	Washington W3AGB DMRVA	444.1625	+5	CC1	DMR	DMRVA	—	Washington, DC
29.2	W3AGB	Washington W3AGB K4USD	147.3600	+0.6	CC1	DMR	K4USD	—	Washington, DC
29.2	W3AGB	Washington W3AGB	1283.1000	-12	none	D-STAR		—	Washington, DC
29.3	N3ST	Timonium N3ST	449.6750	-5	TONE 167.9	FM (analog)		—	Timonium, MD
29.5	W3HAC	Washington W3HAC	444.1625	+5	CC0	DMR		—	Washington, DC
29.5	W3NAB	Washington W3NAB AllStar	442.7000	+5	TONE 103.5	FM (analog)	AllStar 53645	—	Washington, DC
29.6	K3VOA	Washington Wilbu K3VOA AllStar	147.0450	+0.6	TSQL 77.0	FM (analog)	AllStar 23918	—	Washington, DC
29.6	N3EJT	Owings Mills N3EJT Not-Linked	147.1950	+0.6	CC1	DMR	Not-Linked	—	Owings Mills, MD
29.6	N3CDY	Owings Mills N3CDY Interstate	449.0750	-5	CC1	DMR	Interstate	—	Owings Mills, MD
29.7	N3CDY	Owings Mills N3CDY	927.5125	-25	TONE 156.7	FM (analog)		—	Owings Mills, MD
30.0	K3EMD	Easton URM Ctr K3EMD WIRES-X	442.2000	+5	TSQL 156.7	FM (analog) (FM,C4FM)	WIRES-X 33142	—	Easton, MD
30.2	KA3LAO	Washington KA3LAO	145.1100	-0.6	CC1	DMR		—	Washington, DC
30.2	W3DCA	Washington W3DCA	147.2700	+0.6	TONE 100.0	FM (analog)		—	Washington, DC
30.2	N3ADV	Washington N3ADV	447.1750	-5	TONE 156.7	FM (analog)		—	Washington, DC
30.2	W3SMR	Brandywine W3SMR	147.1500	+0.6	TSQL 114.8	FM (analog)		—	Brandywine, MD
30.4	W3HAC	Washington W3HAC	147.3600	+0.6	CC1	DMR		—	Washington, DC
30.4	W3HAC	Washington W3HAC	1283.1000	-12	none	D-STAR		—	Washington, DC
30.4	WA3YUV	Brandywine WA3YUV	443.6000	+5	TSQL 103.5	FM (analog) (FM,C4FM)		—	Brandywine, MD
30.8	W3WDC	Washington W3WDC BM	443.0125	+5	CC4	DMR	BrandMeister 312819502	—	Washington, DC
30.9	K3NXU	Cockeysville K3NXU	145.1900	-0.6	TONE 110.9	FM (analog)		—	Cockeysville, MD
30.9	KB3BHO	Cockeysville KB3BHO	448.5250	-5	TONE 82.5	FM (analog)		—	Cockeysville, MD
31.0	K3UCB	Olney K3UCB Interstate	442.9000	+5	CC1	DMR	Interstate-Network	—	Olney, MD
31.0	W3DOS	Washington Harry W3DOS	145.1900	-0.6	TONE 151.4	FM (analog)		—	Washington, DC
32.3	N8HM	Arlington N8HM BM	438.4500	-5	CC1	DMR	BrandMeister 311101701	—	Arlington, VA
32.3	K3YGG	Bethesda NIH K3YGG EchoLink	145.2900	-0.6	TONE 156.7	FM (analog)	EchoLink 247014	—	Bethesda, MD
32.5	WA3KOK	Washington WAMU WA3KOK IRLP	449.9750	-5	TSQL 107.2	FM (analog) (FM,P25)	IRLP 4000	—	Washington, DC
32.6	WA3YOO	North Bethesda WA3YOO	224.9400	-1.6	TONE 156.7	FM (analog)		—	North Bethesda, MD
32.7	WN3S	Bel Air WN3S BM	439.0000	-5	CC1	DMR	BrandMeister 3197267	—	Bel Air, MD
32.7	no call listed	Abingdon Maryland	439.9750	simplex	TONE 107.2	FM (analog)		—	Abingdon, MD
32.7	K2EJ	Abingdon K2EJ AllStar	449.3750	-5	TSQL 107.2	FM (analog) (C4FM,DMR,FM)	AllStar 51587 EchoLink 167177 IRLP 4986 BrandMeister 312692	—	Abingdon, MD
32.7	K2EJ	Abingdon K2EJ AllStar	224.2200	-1.6	TSQL 110.9	FM (analog)	AllStar 51537	—	Abingdon, MD
32.7	K2EJ	Abingdon K2EJ AllStar	439.9750	simplex	TONE 107.2	FM (analog)	AllStar 51587 AllStar 515883	—	Abingdon, MD
32.7	K2EJ	Abingdon K2EJ AllStar	223.4200	simplex	TONE 110.9	FM (analog)	AllStar 51537	—	Abingdon, MD
32.8	KV3B	Rockville KV3B	146.9550	-0.6	none	FM (analog)		—	Rockville, MD
33.3	K3CUJ	Cooksville K3CUJ	448.2750	-5	TSQL 156.7	FM (analog) (FM,C4FM)		—	Cooksville, MD
33.4	K3CUJ	Cooksville K3CUJ	147.3900	+0.6	TONE 156.7	FM (analog) (C4FM,FM)		—	Cooksville, MD
33.6	N4FRS	Alexandria N4FRS	449.3750	-5	TONE 203.5	FM (analog) (FM,DV)		—	Alexandria, VA
33.6	W4HFH	Alexandria W4HFH DMRVA	442.4125	+5	CC1	DMR	DMRVA 🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
33.6	W4HFH	Alexandria W4HFH	927.6000	-25	TSQL 107.2	FM (analog)	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
33.7	K3PZN	Sykesville K3PZN	147.2850	+0.6	TONE 156.7	FM (analog)	🗓 1 net	1 net	Sykesville, MD
33.8	N3CNJ	Fallston N3CNJ BM-S2	145.2700	-0.6	CC1	DMR	TGIF BM-S2	—	Fallston, MD
34.1	W3PQS	Prince Frederick W3PQS	53.1700	-1	TSQL 100.0	FM (analog)		—	Prince Frederick, MD
34.1	N3LHD	Aquasco N3LHD Interstate	442.4625	+5	CC1	DMR	Interstate-c-Bridge-1	—	Aquasco, MD
34.3	WB4MJF	Arlington WB4MJF	145.1500	-0.6	TSQL 107.2	FM (analog)		—	Arlington, VA
34.3	W4WVP	Arlington W4WVP	145.4700	-0.6	TONE 107.2	FM (analog)		—	Arlington, VA
34.3	WA4HIS	Arlington WA4HIS	224.0600	-1.6	none	FM (analog)		—	Arlington, VA
34.3	W4CIA	Arlington W4CIA	441.4500	+5	TONE 110.9	FM (analog) (FM,C4FM)		—	Arlington, VA
34.3	AB4YP	Arlington AB4YP	443.2000	+5	TSQL 114.8	FM (analog)		—	Arlington, VA
34.3	K4AF	Arlington K4AF	444.5500	+5	TONE 88.5	FM (analog)		—	Arlington, VA
34.3	W4AVA	Arlington W4AVA	448.6250	-5	TONE 107.2	FM (analog)		—	Arlington, VA
34.3	W4WVP	Arlington W4WVP	449.3250	-5	TONE 151.4	FM (analog)		—	Arlington, VA
34.3	WA4EKJ	Arlington WA4EKJ	224.6200	-1.6	none	FM (analog)		—	Arlington, VA
34.4	K4US	Alexandria GW K4US	146.6550	-0.6	TSQL 141.3	FM (analog) (C4FM,FM)		—	Alexandria, VA
34.6	N3BBF	Potomac N3BBF BM	442.9000	+5	CC1	DMR	BrandMeister 314963	—	Potomac, MD
34.7	WA3YOO	Rockville WA3YOO Interstat	443.9000	+5	TONE 156.7	FM (analog) (DMR,FM,P25)	Interstate-3-Network	—	Rockville, MD
34.8	KB3WHR	Bel Air KB3WHR Interstat	449.6125	-5	CC1	DMR	Interstate	—	Bel Air, MD
34.8	K0BMM	Arlington K0BMM BM	447.3125	-5	CC1	DMR	BrandMeister 322315305	—	Arlington, VA
34.9	WA3KOK	Rockville WA3KOK	927.1375	-25	TONE 156.7	FM (analog)		—	Rockville, MD
34.9	N3JFW	Rockville N3JFW K4USD-Net	442.4875	+5	CC1	DMR	K4USD-Net	—	Rockville, MD
34.9	KV3B	Rockville KV3B	442.7500	+5	TSQL 156.7	FM (analog) (C4FM,FM)		—	Rockville, MD
35.1	W4HFH	Alexandria W4HFH	53.1300	-1	TONE 107.2	FM (analog)	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
35.1	W4HFH	Alexandria W4HFH	147.3150	+0.6	TONE 107.2	FM (analog)	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
35.1	W4HFH	Alexandria W4HFH	224.8200	-1.6	TONE 107.2	FM (analog)	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
35.1	W4HFH	Alexandria W4HFH	444.6000	+5	TONE 107.2	FM (analog)	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
35.1	W4HFH	Alexandria W4HFH	1282.6000	-12	TONE 107.2	FM (analog)	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
35.1	N3JLT	Alexandria N3JLT Interstate	443.1000	+5	CC1	DMR	Interstate 🗓 1 net	1 net · 70 check-ins · 39 stations	Alexandria, VA
35.3	KC3WRK	Bel Air KC3WRK	446.4600	simplex	CC?	DMR		—	Bel Air, MD
35.6	NC3M	Rockville NC3M AllStar	445.9750	simplex	TONE 100.0	FM (analog)	AllStar 47835	—	Rockville, MD
35.7	K2SHF	Bel Air K2SHF AllStar	145.6700	simplex	TONE 77.0	FM (analog)	AllStar 547810 AllStar 547811	—	Bel Air, MD
35.7	N3PPH	Prince Frederick N3PPH Interstate	441.3875	+5	CC1	DMR	Interstate-3	—	Prince Frederick, MD
35.8	W4HFH	Alexandria W4HFH	145.3800	-0.6	none	D-STAR	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
35.8	W4HFH	Alexandria Hosp W4HFH	442.0600	+5	none	D-STAR	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
35.8	W4HFH	Alexandria Hosp W4HFH	1284.6000	-12	none	D-STAR	🗓 1 net	1 net · 34 check-ins · 18 stations	Alexandria, VA
36.0	N3YMS	Trappe N3YMS Interstate	442.5375	+5	CC1	DMR	Interstate	—	Trappe, MD
36.4	N3FI	Barstow N3FI	443.7000	+5	TSQL 179.9	FM (analog) (FM,C4FM)		—	Barstow, MD
36.5	KC3BFB	Fort KC3BFB	146.7150	-0.6	TONE 110.9	FM (analog)		—	Fort Washington, MD
36.5	W3SMD	Barstow W3SMD AllStar	223.9000	-1.6	TONE 186.2	FM (analog)	AllStar 513100	—	Barstow, MD
36.7	N4FRS	Alexandria N4FRS	1283.2000	-12	TSQL 203.5	FM (analog) (FM,DV)		—	Alexandria, VA
36.9	N3BNO	Aberdeen N3BNO BM	442.6500	+5	CC1	DMR	BrandMeister 3216998	—	Aberdeen, MD
37.0	N3BBF	Potomac N3BBF BM	447.8750	-5	CC1	DMR	BrandMeister 314982	—	Potomac, MD
37.2	W4AVA	Falls Church W4AVA	146.6250	-0.6	TSQL 107.2	FM (analog)		—	Falls Church, VA
37.2	W4AVA	Falls Church W4AVA	447.6250	-5	TSQL 107.2	FM (analog)		—	Falls Church, VA
37.6	K3EMD	Easton K3EMD WIRES-X	147.0450	+0.6	TSQL 156.7	FM (analog)	WIRES-X 43142	—	Easton, MD
37.8	KC3FHC	Bel Air KC3FHC	146.7750	-0.6	TSQL 146.2	FM (analog)		—	Bel Air, MD
37.8	KC3FHC	Bel Air KC3FHC	145.1200	-0.6	none	D-STAR		—	Bel Air, MD
37.8	KC3FHC	Bel Air KC3FHC	447.9875	-5	none	D-STAR		—	Bel Air, MD
37.8	KC3FHC	Forest Hill KC3FHC	449.7750	-5	TONE 162.2	FM (analog)		—	Forest Hill, MD
37.8	KC3FHC	Bel Air KC3FHC	1248.1000	simplex	none	D-STAR		—	Bel Air, MD
37.8	KC3FHC	Bel Air KC3FHC	1282.3000	-20	none	D-STAR		—	Bel Air, MD
37.9	KV3B	Gaithersburg KV3B	53.2700	-1	TSQL 156.7	FM (analog)		—	Gaithersburg, MD
38.0	KA3LAO	Gaithersburg RF KA3LAO Interstat	441.8875	+5	CC1	DMR	Interstate-Network	—	Gaithersburg, MD
38.4	W9DSG	Falls Church W9DSG BM	448.0625	-5	CC1	DMR	BrandMeister 3223922	—	Falls Church, VA
38.6	K4HTA	Tysons Corner K4HTA AllStar	146.6850	-0.6	TONE 110.9	FM (analog)	EchoLink 633487 AllStar 52093 🗓 1 net	1 net · 38 check-ins · 27 stations	Tysons Corner, VA
39.1	KO3L	Bel Air KO3L BM	147.1200	+0.6	TSQL 114.8	FM (analog) (DMR,DV,FM)	BrandMeister 311985	—	Bel Air, MD
39.1	KO3L	Bel Air KO3L	223.9600	-1.6	none	FM (analog)		—	Bel Air, MD
39.2	KB3MEC	Galena KB3MEC	441.5000	+5	DCS 754	FM (analog)		—	Galena, MD
39.2	KB3MEC	Galena KB3MEC	224.0000	-1.6	TONE 131.8	FM (analog)		—	Galena, MD
39.4	NV4FM	Tysons Corner NV4FM	145.3400	-0.6	none	D-STAR	🗓 1 net	1 net	Tysons Corner, VA
39.4	NV4FM	Tysons Corner NV4FM	448.0350	-5	none	D-STAR	🗓 1 net	1 net	Tysons Corner, VA
39.4	NV4FM	Tysons Corner NV4FM	1282.8000	-12	none	D-STAR	🗓 1 net	1 net	Tysons Corner, VA
40.0	NV4FM	Tysons Corner NV4FM	146.9100	-0.6	TSQL 77.0	FM (analog)	🗓 1 net	1 net	Tysons Corner, VA
40.0	NV4FM	Tysons Corner NV4FM	447.0250	-5	TSQL 77.0	FM (analog)	🗓 1 net	1 net	Tysons Corner, VA
40.0	N9KET	Tysons Corner N9KET Interstate	441.3375	+5	CC1	DMR	Interstate	—	Tysons Corner, VA
40.2	KB3LYL	Damascus KB3LYL K4USD-Net	442.2125	+5	CC1	DMR	K4USD-Net	—	Damascus, MD
40.5	WR3IRS	Havre de Grace WR3IRS Interstat	443.6500	+5	CC1	DMR	Interstate	—	Havre de Grace, MD
40.7	N3UR	Shawsville N3UR	224.9200	-1.6	none	FM (analog)		—	Shawsville, MD
41.0	W4CIA	Annandale Inova W4CIA	147.2100	+0.6	TONE 110.9	FM (analog) (FM,C4FM)		—	Annandale, VA
41.1	N3KZ	Havre de Grace N3KZ	444.1500	+5	TSQL 131.8	FM (analog)		—	Havre de Grace, MD
41.6	W3CGT	Mount Airy W3CGT	448.5750	-5	TONE 69.3	FM (analog)		—	Mount Airy, MD
41.8	N3QEM	Vienna N3QEM Interstate	442.9000	+5	CC1	DMR	Interstate AWSVirginia	—	Vienna, VA
42.0	N3QEM	Vienna N3QEM Interstate	927.6750	-25	CC1	DMR	Interstate	—	Vienna, VA
42.0	WA3KOK	Germantown WA3KOK	147.2700	+0.6	TONE 156.7	FM (analog) (FM,P25)		—	Germantown, MD
42.0	KV3B	Germantown KV3B	444.2000	+5	none	D-STAR		—	Germantown, MD
42.1	N9KET	Vienna N9KET BM	445.8000	-5	CC1	DMR	BrandMeister 316759601 BrandMeister 316759602 BrandMeister 316759603 BrandMeister 316759604 BrandMeister 316759605 BrandMeister 316759606 BrandMeister 316759607 BrandMeister 316759608 BrandMeister 316759609 BrandMeister 316759610 BrandMeister 316759611 BrandMeister 316759612 BrandMeister 316759613 BrandMeister 316759614 BrandMeister 316759615 BrandMeister 316759616 BrandMeister 316759617 BrandMeister 316759618 BrandMeister 316759619 BrandMeister 316759620	—	Vienna, VA
42.2	N3QEM	Vienna N3QEM Interstate	145.1763	-0.6	CC13	DMR	Interstate	—	Vienna, VA
42.7	K3OCM	Charlotte Hall K3OCM K4USD-Net	443.1875	+5	CC6	DMR	K4USD-Net	—	Charlotte Hall, MD
43.3	KB2SKP	Lexington Park KB2SKP BM	446.0125	in 433.0125	CC1	DMR	BrandMeister 314491901	—	Lexington Park, MD
43.7	N3PX	Mechanicsville N3PX	147.1950	+0.6	TSQL 156.7	FM (analog)	🗓 1 net	1 net · 34 check-ins · 12 stations	Mechanicsville, MD
43.8	K3PZN	Westminster K3PZN	145.4100	-0.6	TSQL 114.8	FM (analog)	🗓 1 net	1 net	Westminster, MD
43.8	K3PZN	Westminster K3PZN	449.8750	-5	TSQL 127.3	FM (analog) (C4FM,FM)	🗓 1 net	1 net	Westminster, MD
43.8	K3PZN	Westminster K3PZN	53.0900	-1	TSQL 107.2	FM (analog)	🗓 1 net	1 net	Westminster, MD
43.9	KN4EAR	Reston KN4EAR BM	430.8000	in 445.8000	CC1	DMR	BrandMeister 3100457	—	Reston, VA
44.7	N3YMS	Hazlettville N3YMS Interstate	448.0750	-5	CC2	DMR	Interstate-2-Network	—	Hazlettville, DE
44.9	KN4ANG	Burke KN4ANG IRLP	448.3000	simplex	TSQL 110.9	FM (analog)	IRLP 4048	—	Burke, VA
45.0	W8RBJ	Reston Atrium W8RBJ EchoLink	147.3750	+0.6	TSQL 131.8	FM (analog)	EchoLink 188962	—	Reston, VA
45.4	N3PPH	Mechanicsville N3PPH Interstate	441.7875	+5	CC1	DMR	Interstate-2	—	Mechanicsville, MD
45.4	K4VSS	Rising Sun K4VSS BM	438.4500	-5	CC1	DMR	BrandMeister 322675501	—	Rising Sun, PA
45.5	N4NVA	Sterling N4NVA BM	439.4500	-5	CC1	DMR	BrandMeister 318186301	—	Sterling, VA
46.1	N3RCN	Charlestown Wtr N3RCN	442.9500	+5	TONE 103.5	FM (analog)		—	Charlestown, MD
46.1	K3CAL	Lusby Appeal K3CAL EchoLink	444.9500	+5	TSQL 156.7	FM (analog) (FM,C4FM)	EchoLink 389207 🗓 1 net	1 net	Lusby, MD
46.3	N3KNT	Federalsburg N3KNT Interstate	442.0500	+5	CC1	DMR	Interstate-2-Network	—	Federalsburg, MD
46.5	N3YMS	Hazlettville N3YMS	147.3000	+0.6	TSQL 77.0	FM (analog)		—	Hazlettville, DE
46.8	N4FSC	Ashburn N4FSC	145.3100	-0.6	TSQL 77.0	FM (analog)		—	Ashburn, VA
46.8	WA3SFJ	Port Deposit WA3SFJ AllStar	146.8500	-0.6	TONE 107.2	FM (analog)	AllStar 558300 🗓 1 net	1 net · 5 check-ins · 5 stations	Port Deposit, MD
46.8	WA3SFJ	Port Deposit WA3SFJ	449.8250	-5	TONE 167.9	FM (analog) (FM,C4FM)	🗓 1 net	1 net · 5 check-ins · 5 stations	Port Deposit, MD
47.6	N3QEM	Herndon N3QEM Interstate	145.1637	-0.6	CC13	DMR	Interstate	—	Herndon, VA
47.6	N3QEM	Herndon Worldgat N3QEM Interstate	442.4375	+5	CC1	DMR	Interstate	—	Herndon, VA
47.6	N1RM	Reston N1RM	443.0000	+5	TONE 88.5	FM (analog)		—	Reston, VA
47.7	N4CV	Herndon N4CV AWSVirginia	443.0875	+5	CC1	DMR	AWSVirginia	—	Herndon, VA
47.7	N3OCQ	Herndon N3OCQ BM	447.3500	-5	CC1	DMR	BrandMeister 314789	—	Herndon, VA
47.7	W3BPT	Hollywood W3BPT Interstate	146.8500	-0.6	CC1	DMR	Interstate-3	—	Hollywood, MD
47.7	N6PPP	Town L0C4T0R N6PPP BM	445.0000	-5	CC1	DMR	BrandMeister 3110809	—	Town, L0C4T0R, MD
47.9	N3CNJ	Delta N3CNJ TGIF	147.1650	+0.6	CC1	DMR	TGIF	—	Delta, PA
47.9	NV4FM	Fairfax NV4FM AllStar	146.7900	-0.6	TSQL 77.0	FM (analog)	AllStar 534142 🗓 1 net	1 net	Fairfax, VA
47.9	NV4FM	Fairfax NV4FM	224.1000	-1.6	TSQL 77.0	FM (analog)	🗓 1 net	1 net	Fairfax, VA
48.3	KA4DCS	Woodbridge Potom KA4DCS	444.8500	+5	none	FM (analog)		—	Woodbridge, VA
48.3	K4XY	Fairfax FO Hosp K4XY AllStar	448.3750	-5	none	FM (analog)	AllStar 59777	—	Fairfax, VA
48.4	N3PPH	Hollywood Fire N3PPH	145.3500	-0.6	TONE 156.7	FM (analog)		—	Hollywood, MD
48.4	N3QEM	Sterling N3QEM AWSVirgini	442.8750	+5	CC1	DMR	AWSVirginia	—	Sterling, VA
49.2	WD4HRO	Woodbridge WD4HRO	1293.0000	-20	none	D-STAR		—	Woodbridge, VA
49.3	N3KUN	Chaptico N3KUN	145.2500	-0.6	TONE 110.9	FM (analog)		—	Chaptico, MD
49.6	K3GGM	Hollywood K3GGM BM	446.5000	-5	CC1	DMR	BrandMeister 3211901	—	Hollywood, MD
7.4	K3BAY offline	Pasadena K3BAY IRLP	145.5400	simplex	TSQL 107.2	FM (analog)	IRLP 4717	—	Pasadena, MD
7.7	KP4IP offline	Millersville KP4IP BM	442.4000	+5	CC1	DMR	BrandMeister 310148	—	Millersville, MD
15.0	W3XJ offline	Bowie W3XJ	442.1500	+5	none	FM (analog)		—	Bowie, MD
17.5	K3AYV offline	Baltimore Pigtow K3AYV EchoLink	442.9000	+5	TSQL 162.2	FM (analog)	EchoLink	—	Baltimore, MD
19.2	W3LRC offline	Jessup W3LRC BM	447.8500	-5	CC1	DMR	BrandMeister 314342	—	Jessup, MD
21.5	WA3KOK offline	Clarksville WA3KOK IRLP	144.9700	simplex	TSQL 107.2	FM (analog)	IRLP 4542	—	Clarksville, MD
21.5	WA3KOK offline	Laurel WA3KOK IRLP	144.4400	simplex	none	FM (analog)	IRLP 4173	—	Laurel, MD
21.7	W3DAK offline	Middle River W3DAK BM	145.1700	-0.6	CC1	DMR	BrandMeister 312377	—	Middle River, MD
23.7	WB3GXW offline	Silver Spring WB3GXW	444.2500	+5	TONE 156.7	FM (analog)		—	Silver Spring, MD
24.0	N2MCS offline	Baltimore N2MCS	442.9000	+5	CC?	DMR		—	Baltimore, MD
25.3	W3ARL offline	Adelphi W3ARL	145.3700	-0.6	none	FM (analog)		—	Adelphi, MD
26.2	N3HF offline	Silver Spring N3HF IRLP	443.4500	+5	TSQL 156.7	FM (analog)	IRLP 4712	—	Silver Spring, MD
28.8	N3VSI offline	Edgewood N3VSI AllStar	146.5600	simplex	TSQL 127.3	FM (analog)	IRLP 8277 AllStar 29916	—	Edgewood, MD
29.6	K3VOA offline	Washington Wilbu K3VOA	448.5750	-5	TSQL 77.0	FM (analog)		—	Washington, DC
30.4	K3MRC offline	Washington K3MRC	145.4300	-0.6	TSQL 114.8	FM (analog) (FM,C4FM)		—	Washington, DC
30.4	KC3VO offline	Washington KC3VO	448.8750	-5	none	FM (analog)		—	Washington, DC
45.8	N3QEM offline	Fairfax N3QEM	442.9125	-5	CC?	DMR		—	Fairfax, VA
46.8	WA3SFJ offline	Port Deposit WA3SFJ	53.8300	-1	TONE 94.8	FM (analog)	🗓 1 net	1 net · 5 check-ins · 5 stations	Port Deposit, MD
48.4	N3RCN offline	Elkton N3RCN	448.5750	-5	TONE 107.2	FM (analog)		—	Elkton, MD
48.5	KB3FWW offline	Hollywood KB3FWW IRLP	449.4900	simplex	TSQL 146.2	FM (analog)	IRLP 8856	—	Hollywood, MD
49.9	N3CNJ offline	Gatchellville N3CNJ TGIF	447.7250	-5	CC1	DMR (C4FM,DMR,P25)	TGIF	—	Gatchellville, PA