N9TPB FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 13, 2026) · 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)

W3PTW HAM

📻
Previously held a GMRS license
WQES444
Expired Apr 4, 2011 · same FCC Registration Number (FRN) · GMRS covers the licensee's immediate family
Advanced class licensed since 1985 (41 yrs) Queenstown, MD Grid FM18wx 202 repeaters within 50 mi
🔒 Not available — currently licensed, through Oct 25, 2024. If it isn't renewed, it opens for vanity requests Oct 26, 2026.

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

Currently held by Thomas C Van Vranken · 1 holder on record

Current holder: Thomas C Van Vranken

Held W3PTW Jan 25, 1985 → present · first licensed Jan 25, 1985 as W3PTW · 1 license · FRN 0011346137
📖 In the printed callbooks since 1950 as W3PTW, before the FCC's online records

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.
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
W3PTW 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.

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for W3PTW in the last 24 hours. They show up here within seconds of W3PTW beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 Miles

202 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)
MilesCallNameOutputOffsetToneModeNetworksActivityLocation
5.9 W3ETC Centreville
W3ETC
 927.6500 -25 TSQL 156.7 FM (analog) (FM,P25) — Centreville, MD
5.9 KE3AO Centreville
KE3AO
 146.9400 -0.6 TONE 107.2 FM (analog) — Centreville, MD
5.9 KE3AO Centreville
KE3AO
 448.2250 -5 TONE 107.2 FM (analog) (FM,C4FM) — Centreville, MD
10.6 W3GAB Stevensville
W3GAB BM
 433.8000 +5 CC1 DMR BrandMeister 321788101 — Stevensville, MD
13.4 K3EMD Easton URM Ctr
K3EMD WIRES-X
 442.2000 +5 TSQL 156.7 FM (analog) (FM,C4FM) WIRES-X 33142 — Easton, MD
17.8 K3ARS Chestertown Shor
K3ARS
 449.1750 -5 TONE 156.7 FM (analog) — Chestertown, MD
17.8 N3YMS Chestertown
N3YMS Interstate
 441.6625 +5 CC1 DMR Interstate — Chestertown, MD
18.3 N3HAZ Annapolis
N3HAZ BM
 439.5500 in 433.5500 CC1 DMR BrandMeister 3197367 — Annapolis, MD
20.8 N3YMS Trappe
N3YMS Interstate
 442.5375 +5 CC1 DMR Interstate — Trappe, MD
22.1 K3ARS Worton
K3ARS AllStar
 147.3750 +0.6 TSQL 156.7 FM (analog) AllStar 497350 — Worton, MD
22.1 K3ARS Worton
K3ARS BM
 447.7375 -5 CC1 DMR BrandMeister 312414 — Worton, MD
22.1 K3ARS Worton
K3ARS BM
 442.7375 +5 CC1 DMR BrandMeister 312414 — Worton, MD
22.4 KC3FCQ Arnold
KC3FCQ BM
 442.8750 +5 CC1 DMR BrandMeister 312411801 — Arnold, MD
23.1 K3EMD Easton
K3EMD WIRES-X
 147.0450 +0.6 TSQL 156.7 FM (analog) WIRES-X 43142 — Easton, MD
24.8 KB3CMA Annapolis Broad
KB3CMA
 442.3000 +5 TSQL 107.2 FM (analog) (C4FM,FM) — Annapolis, MD
24.8 KB3CMA Annapolis Broad
KB3CMA Interstat
 441.8375 +5 CC1 DMR Interstate-3 — Annapolis, MD
24.9 N3YMS Hazlettville
N3YMS Interstate
 448.0750 -5 CC2 DMR Interstate-2-Network — Hazlettville, DE
25.8 N3KNT Federalsburg
N3KNT Interstate
 442.0500 +5 CC1 DMR Interstate-2-Network — Federalsburg, MD
26.0 KR3LC Pasadena
KR3LC BM
 433.4500 in 446.4500 CC1 DMR BrandMeister 312414103 — Pasadena, MD
27.0 N3YMS Hazlettville
N3YMS
 147.3000 +0.6 TSQL 77.0 FM (analog) — Hazlettville, DE
27.3 W3VPR Crownsville
W3VPR EchoLink
 147.0750 +0.6 TSQL 107.2 FM (analog) EchoLink 524902 🗓 5 nets 5 nets · 711 check-ins · 87 stations Crownsville, MD
28.2 K3LPV Essex
K3LPV BM
 449.9000 -5 CC1 DMR BrandMeister 310588 — Essex, MD
28.2 K3LPV Essex
K3LPV
 449.2000 simplex CC? DMR — Essex, MD
28.5 KB3IWV Harrington
KB3IWV
 442.4500 +5 TONE 127.3 FM (analog) — Harrington, DE
28.8 KC3APF Dundalk Key
KC3APF WIRES-X
 448.6750 -5 TONE 91.5 FM (analog) (FM,C4FM) WIRES-X 30068 — Dundalk, MD
28.8 KB3MEC Galena
KB3MEC
 224.0000 -1.6 TONE 131.8 FM (analog) — Galena, MD
28.9 KB3MEC Galena
KB3MEC
 441.5000 +5 DCS 754 FM (analog) — Galena, MD
29.3 W3CU Millersville
W3CU EchoLink
 146.8050 -0.6 TONE 107.2 FM (analog) EchoLink 90911 — Millersville, MD
29.3 W3VPR Millersville
W3VPR
 224.5600 -1.6 TONE 107.2 FM (analog) 🗓 5 nets 5 nets · 711 check-ins · 87 stations Millersville, MD
29.3 W3CU Millersville
W3CU
 449.1250 -5 TONE 107.2 FM (analog) (FM,C4FM) — Millersville, MD
29.6 W3WMD Greenwood
W3WMD
 224.4400 -1.6 none FM (analog) — Greenwood, DE
29.7 W3VPR Davidsonville
W3VPR
 147.1050 +0.6 TONE 107.2 FM (analog) 🗓 5 nets 5 nets · 711 check-ins · 87 stations Davidsonville, MD
29.7 W3VPR Davidsonville
W3VPR
 223.8800 -1.6 TONE 107.2 FM (analog) 🗓 5 nets 5 nets · 711 check-ins · 87 stations Davidsonville, MD
29.7 W3VPR Davidsonville
W3VPR
 444.4000 +5 TSQL 107.2 FM (analog) 🗓 5 nets 5 nets · 711 check-ins · 87 stations Davidsonville, MD
29.8 KC3ARC Woodside
KC3ARC
 146.9100 -0.6 TONE 77.0 FM (analog) (FM,C4FM) 🗓 7 nets 7 nets · 151 check-ins · 39 stations Woodside, DE
29.8 KC3ARC Woodside
KC3ARC
 444.5500 +5 TSQL 77.0 FM (analog) 🗓 7 nets 7 nets · 151 check-ins · 39 stations Woodside, DE
29.9 KA2JAI Millersville
KA2JAI EchoLink
 146.8050 -0.6 TSQL 107.2 FM (analog) EchoLink 🗓 1 net 1 net Millersville, MD
30.2 W3CPO Glen Burnie
W3CPO BM
 448.5000 -5 CC1 DMR BrandMeister 312442201 — Glen Burnie, MD
30.8 N3SCP Gambrills
N3SCP WIRES-X
 447.5500 -5 DG-ID 00-00 Fusion (C4FM) WIRES-X 18557 — Gambrills, MD
30.9 N3SCP Gambrills
N3SCP WIRES-X
 442.5500 +5 TONE 107.2 FM (analog) (FM,C4FM) WIRES-X 18557 — Gambrills, MD
30.9 N3DN Camden
N3DN BM
 447.8750 -5 CC1 DMR BrandMeister 314964 — Camden, DE
31.0 N3EMC Middle River
N3EMC AllStar
 927.7000 -25 TSQL 156.7 FM (analog) (DMR,FM) AllStar 67341 EchoLink 506758 TGIF — Middle River, MD
31.1 N3LPV Glen Burnie
N3LPV EchoLink
 146.5650 in 144.6000 none FM (analog) EchoLink 242213 — Glen Burnie, MD
31.1 N3MIR Glen Burnie
N3MIR
 442.6000 +5 TONE 127.3 FM (analog) — Glen Burnie, MD
31.2 N3IOC Wyoming
N3IOC
 449.7750 -5 TONE 114.8 FM (analog) — Wyoming, DE
31.3 N3EST Middle River
N3EST
 147.3450 +0.6 TONE 192.8 FM (analog) — Middle River, MD
31.3 WB3FFV Middle River MD
WB3FFV BM
 438.0150 -5 CC1 DMR BrandMeister 322199401 — Middle River, MD FM1, MD
31.6 W3PGA Baltimore KHS
W3PGA
 449.5750 -5 TSQL 123.0 FM (analog) (FM,C4FM) — Baltimore, MD
31.6 W3PGA Baltimore KHS
W3PGA
 147.2400 +0.6 TSQL 123.0 FM (analog) (FM,C4FM) — Baltimore, MD
32.0 W3DAK Middle River
W3DAK EchoLink
 447.3750 -5 TONE 67.0 FM (analog) (DMR,FM) EchoLink 823021 BrandMeister 312299 — Middle River, MD
32.2 WG3K Chesapeake Beach
WG3K BM
 444.3500 +5 none D-STAR (DMR,DV) BrandMeister 312393 — Chesapeake Beach, MD
32.2 KB3IAI Gambrills
KB3IAI BM
 439.9000 in 438.2000 CC1 DMR BrandMeister 3172111 — Gambrills, MD
32.3 N3YMS Frederica
N3YMS Interstate
 449.7250 -5 CC1 DMR Interstate — Frederica, DE
32.4 KD3CXK Brooklyn
KD3CXK BM
 439.0650 -1 CC1 DMR BrandMeister 3223379 — Brooklyn, MD
32.9 N3YMS Dover
N3YMS Interstate
 449.0750 -5 CC1 DMR Interstate — Dover, DE
33.0 N3PPH Sunderland Mt
N3PPH Interstate
 441.6375 +5 CC1 DMR Interstate-2 — Sunderland, MD
33.0 K3CAL Sunderland
K3CAL EchoLink
 146.9850 -0.6 TONE 156.7 FM (analog) (FM,C4FM) EchoLink 389207 🗓 1 net 1 net Sunderland, MD
33.2 N3VSI Larry - Edgewood
N3VSI AllStar
 442.9000 +5 TONE 127.3 FM (analog) AllStar 28094 AllStar 497352 — Larry - Edgewood, MD
33.7 N3HIA Joppa
N3HIA EchoLink
 224.4800 -1.6 TONE 100.0 FM (analog) EchoLink 245186 — Joppa, MD
34.0 N3YMS Dover Motor
N3YMS Interstate
 146.7900 -0.6 CC1 DMR Interstate — Dover, DE
34.0 N3IOC Dover
N3IOC
 444.5000 -5 TONE 114.8 FM (analog) — Dover, DE
34.0 N3KNT Seaford
N3KNT EchoLink
 146.7150 -0.6 TONE 156.7 FM (analog) EchoLink 959058 — Seaford, DE
34.5 KC3ARC Dover DMV
KC3ARC
 146.9700 -0.6 TSQL 77.0 FM (analog) (FM,C4FM) 🗓 7 nets 7 nets · 151 check-ins · 39 stations Dover, DE
34.6 W3TBG Seaford
W3TBG
 444.9000 +5 TONE 156.7 FM (analog) — Seaford, DE
34.6 N3YMS Seaford
N3YMS Interstate
 442.8125 +5 CC1 DMR Interstate — Seaford, DE
35.6 K3CRK Smyrna
K3CRK
 146.6550 -0.6 TONE 156.7 FM (analog) — Smyrna, DE
35.6 K3CRK Smyrna
K3CRK
 443.0500 +5 TONE 156.7 FM (analog) — Smyrna, DE
35.8 N3CDY Baltimore
N3CDY Interstate
 927.0625 -25 CC1 DMR Interstate — Baltimore, MD
36.6 W3JEH Perry Hall
W3JEH
 223.8400 -1.6 none FM (analog) — Perry Hall, MD
36.7 WA3KOK Baltimore Haleth
WA3KOK
 442.2500 +5 TSQL 107.2 FM (analog) (FM,P25) — Baltimore, MD
36.9 W3TBG Seaford WSUX
W3TBG WIRES-X
 145.2100 -0.6 TONE 156.7 FM (analog) (FM,C4FM) WIRES-X 46540 — Seaford, DE
36.9 N3SBP Parkville
N3SBP BM
 223.8000 -1.6 CC1 DMR BrandMeister 312410402 BrandMeister 314562 — Parkville, MD
37.5 N3LHD Upper Marlboro
N3LHD Interstate
 444.6500 +5 CC6 DMR Interstate-c-Bridge-1 — Upper Marlboro, MD
37.5 K3DRC Salisbury WMDT
K3DRC
 146.8200 -0.6 TSQL 156.7 FM (analog) — Salisbury, MD
38.2 WA3DZD Jessup
WA3DZD
 146.7600 -0.6 TSQL 107.2 FM (analog) — Jessup, MD
38.2 WA3DZD Jessup
WA3DZD
 444.0000 +5 TSQL 107.2 FM (analog) — Jessup, MD
38.2 KA3LAO Jessup
KA3LAO Interstat
 442.7125 +5 CC1 DMR Interstate-2-Network — Jessup, MD
38.3 no call listed Abingdon
Maryland
 439.9750 simplex TONE 107.2 FM (analog) — Abingdon, MD
38.3 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
38.3 K2EJ Abingdon
K2EJ AllStar
 439.9750 simplex TONE 107.2 FM (analog) AllStar 51587 AllStar 515883 — Abingdon, MD
38.3 K2EJ Abingdon
K2EJ AllStar
 224.2200 -1.6 TSQL 110.9 FM (analog) AllStar 51537 — Abingdon, MD
38.3 K2EJ Abingdon
K2EJ AllStar
 223.4200 simplex TONE 110.9 FM (analog) AllStar 51537 — Abingdon, MD
38.4 W3PQS Prince Frederick
W3PQS
 53.1700 -1 TSQL 100.0 FM (analog) — Prince Frederick, MD
38.4 N3BNO Aberdeen
N3BNO BM
 442.6500 +5 CC1 DMR BrandMeister 3216998 — Aberdeen, MD
39.0 WN3S Bel Air
WN3S BM
 439.0000 -5 CC1 DMR BrandMeister 3197267 — Bel Air, MD
39.2 N3TPE Middletown
N3TPE BM
 440.3500 +5 CC10 DMR BrandMeister 311031 — Middletown, DE
39.2 AD3J Middletown
AD3J WIRES-X
 449.0250 -5 TSQL 131.8 FM (analog) WIRES-X 11851 — Middletown, DE
39.4 N3PPH Prince Frederick
N3PPH Interstate
 441.3875 +5 CC1 DMR Interstate-3 — Prince Frederick, MD
39.5 W4ATN Largo
W4ATN MARC
 443.7875 +5 CC3 DMR DMR-MARC — Largo, MD
39.7 K3SCD Middletown
K3SCD BM
 433.5500 in 439.5500 CC5 DMR BrandMeister 321717501 — Middletown, DE
40.4 W3FT Towson
W3FT EchoLink
 146.6700 -0.6 TONE 107.2 FM (analog) EchoLink 286640 — Towson, MD
40.4 WR3IRS Towson
WR3IRS Interstat
 441.4000 +5 CC1 DMR Interstate — Towson, MD
40.4 N3CDY Towson
N3CDY
 449.2750 -5 TONE 107.2 FM (analog) (FM,P25) — Towson, MD
40.4 WR3IRS Havre de Grace
WR3IRS Interstat
 443.6500 +5 CC1 DMR Interstate — Havre de Grace, MD
40.5 W3DHS Towson
W3DHS
 145.1400 -0.6 TONE 114.8 D-STAR — Towson, MD
40.5 W3DHS Towson
W3DHS EchoLink
 145.3300 -0.6 TONE 114.8 FM (analog) EchoLink 217618 — Towson, MD
40.5 WB3DZO Towson
WB3DZO
 147.0300 +0.6 TONE 156.7 FM (analog) — Towson, MD
40.5 W3DHS Towson
W3DHS
 442.1125 +5 TONE 114.8 D-STAR — Towson, MD
40.5 N3KZ Havre de Grace
N3KZ
 444.1500 +5 TSQL 131.8 FM (analog) — Havre de Grace, MD
40.6 K3OCM Towson
K3OCM K4USD-Net
 443.8500 +5 CC6 DMR K4USD-Net — Towson, MD
40.7 N3FI Barstow
N3FI
 443.7000 +5 TSQL 179.9 FM (analog) (FM,C4FM) — Barstow, MD
40.7 KB3HGW Jessup
KB3HGW BM
 448.8000 -5 CC1 DMR BrandMeister 321114701 — Jessup, MD
40.8 WA3KOK Laurel
WA3KOK IRLP
 446.5000 simplex TSQL 100.0 FM (analog) IRLP 4332 — Laurel, MD
40.9 K3ERA Lanham DC Hosp
K3ERA
 447.3250 -5 TONE 110.9 FM (analog) 🗓 2 nets 2 nets · 63 check-ins · 19 stations Lanham, MD
40.9 W3SMD Barstow
W3SMD AllStar
 223.9000 -1.6 TONE 186.2 FM (analog) AllStar 513100 — Barstow, MD
40.9 W3CER Middletown Emerg
W3CER
 442.5000 +5 TSQL 100.0 FM (analog) — Middletown, DE
41.0 W3LRC Laurel
W3LRC
 442.5000 +5 TONE 156.7 FM (analog) — Laurel, MD
41.0 W4ATN Laurel
W4ATN
 443.8000 +5 CC3 DMR — Laurel, MD
41.0 W4ATN Laurel
W4ATN
 145.3900 -0.6 none FM (analog) — Laurel, MD
41.4 KB2SKP Lexington Park
KB2SKP BM
 446.0125 in 433.0125 CC1 DMR BrandMeister 314491901 — Lexington Park, MD
41.5 WA3NAN Greenbelt
WA3NAN
 146.8350 -0.6 TONE 114.8 FM (analog) — Greenbelt, MD
41.5 W3GMR Greenbelt
W3GMR
 146.8800 -0.6 TSQL 77.0 FM (analog) — Greenbelt, MD
41.6 W3SQN Laurel
W3SQN BM
 442.9000 +5 CC1 DMR BrandMeister 312418 — Laurel, MD
41.7 KC3WRK Bel Air
KC3WRK
 446.4600 simplex CC? DMR — Bel Air, MD
41.7 KB3WHR Bel Air
KB3WHR Interstat
 449.6125 -5 CC1 DMR Interstate — Bel Air, MD
42.3 N3LHD Aquasco
N3LHD Interstate
 442.4625 +5 CC1 DMR Interstate-c-Bridge-1 — Aquasco, MD
42.7 KC3OQK Ellicott City
KC3OQK BM
 449.0000 -5 CC1 DMR BrandMeister 315960101 — Ellicott City, MD
42.7 N3EZD Ellicott City
N3EZD
 224.3200 -1.6 none FM (analog) — Ellicott City, MD
42.7 N3EZD Ellicott City
N3EZD
 449.5250 -5 TONE 100.0 FM (analog) — Ellicott City, MD
42.9 K2SHF Bel Air
K2SHF AllStar
 145.6700 simplex TONE 77.0 FM (analog) AllStar 547810 AllStar 547811 — Bel Air, MD
43.0 N3RCN Charlestown Wtr
N3RCN
 442.9500 +5 TONE 103.5 FM (analog) — Charlestown, MD
43.1 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
43.3 N3CNJ Fallston
N3CNJ BM-S2
 145.2700 -0.6 CC1 DMR TGIF BM-S2 — Fallston, MD
43.6 WA3RF Cheverly
WA3RF AllStar
 441.0000 +5 TONE 173.8 FM (analog) AllStar 57512 — Cheverly, MD
43.7 W3CAM Columbia
W3CAM
 224.8600 -1.6 none FM (analog) — Columbia, MD
44.0 WA3YUV Brandywine
WA3YUV
 443.6000 +5 TSQL 103.5 FM (analog) (FM,C4FM) — Brandywine, MD
44.1 K3CAL Lusby Appeal
K3CAL EchoLink
 444.9500 +5 TSQL 156.7 FM (analog) (FM,C4FM) EchoLink 389207 🗓 1 net 1 net Lusby, MD
44.1 K3CUJ Columbia
K3CUJ
 147.1350 +0.6 TSQL 156.7 FM (analog) (FM,C4FM) — Columbia, MD
44.3 W3SMR Brandywine
W3SMR
 147.1500 +0.6 TSQL 114.8 FM (analog) — Brandywine, MD
44.6 K3GMR Bladensburg
K3GMR EchoLink
 146.6100 -0.6 TSQL 77.0 FM (analog) EchoLink 796114 — Bladensburg, MD
44.6 KC3FHC Bel Air
KC3FHC
 146.7750 -0.6 TSQL 146.2 FM (analog) — Bel Air, MD
44.6 KC3FHC Bel Air
KC3FHC
 145.1200 -0.6 none D-STAR — Bel Air, MD
44.6 KC3FHC Bel Air
KC3FHC
 447.9875 -5 none D-STAR — Bel Air, MD
44.6 KC3FHC Forest Hill
KC3FHC
 449.7750 -5 TONE 162.2 FM (analog) — Forest Hill, MD
44.6 KC3FHC Bel Air
KC3FHC
 1248.1000 simplex none D-STAR — Bel Air, MD
44.6 KC3FHC Bel Air
KC3FHC
 1282.3000 -20 none D-STAR — Bel Air, MD
44.9 KG1JAG Town L0C4T0R
KG1JAG BM
 446.5000 -5 CC1 DMR BrandMeister 321925001 — Town, L0C4T0R, MD
45.1 W3EAX College Park UMD
W3EAX EchoLink
 145.4900 -0.6 none FM (analog) EchoLink 318547 — College Park, MD
45.2 KO3L Bel Air
KO3L BM
 147.1200 +0.6 TSQL 114.8 FM (analog) (DMR,DV,FM) BrandMeister 311985 — Bel Air, MD
45.2 KO3L Bel Air
KO3L
 223.9600 -1.6 none FM (analog) — Bel Air, MD
45.4 KY3O Calverton
KY3O BM
 438.4500 -5 CC1 DMR BrandMeister 318573701 — Calverton, MD
45.6 N3ST Timonium
N3ST
 449.6750 -5 TONE 167.9 FM (analog) — Timonium, MD
46.0 K3NXU Cockeysville
K3NXU
 145.1900 -0.6 TONE 110.9 FM (analog) — Cockeysville, MD
46.0 KB3BHO Cockeysville
KB3BHO
 448.5250 -5 TONE 82.5 FM (analog) — Cockeysville, MD
46.4 WB3DZO Randallstown
WB3DZO
 443.3500 +5 TSQL 156.7 FM (analog) (FM,C4FM) — Randallstown, MD
46.6 N3TUK Adelphi
N3TUK AllStar
 443.6625 +5 CC1 DMR AllStar 43105 BrandMeister 313057 — Adelphi, MD
46.7 WA3SFJ Port Deposit
WA3SFJ AllStar
 146.8500 -0.6 TONE 107.2 FM (analog) AllStar 558300 🗓 1 net 1 net · 11 check-ins · 7 stations Port Deposit, MD
46.7 WA3SFJ Port Deposit
WA3SFJ
 449.8250 -5 TONE 167.9 FM (analog) (FM,C4FM) 🗓 1 net 1 net · 11 check-ins · 7 stations Port Deposit, MD
46.9 N3RCN Elkton
N3RCN
 145.4700 -0.6 TSQL 94.8 FM (analog) — Elkton, MD
47.1 K3CUJ Columbia
K3CUJ WIRES-X
 449.4750 -5 Fusion (C4FM) WIRES-X 30215 — Columbia, MD
48.0 N3EJT Owings Mills
N3EJT Not-Linked
 147.1950 +0.6 CC1 DMR Not-Linked — Owings Mills, MD
48.0 N3CDY Owings Mills
N3CDY Interstate
 449.0750 -5 CC1 DMR Interstate — Owings Mills, MD
48.0 N3CDY Owings Mills
N3CDY
 927.5125 -25 TONE 156.7 FM (analog) — Owings Mills, MD
48.2 N3PPH Mechanicsville
N3PPH Interstate
 441.7875 +5 CC1 DMR Interstate-2 — Mechanicsville, MD
48.4 W3HAC Washington
W3HAC
 444.1625 +5 CC0 DMR — Washington, DC
48.4 K3WS Washington
K3WS AllStar
 443.3750 -5 TONE 123.0 FM (analog) AllStar 27701 — Washington, DC
48.4 K3WS Washington
K3WS AllStar
 447.3750 -5 TONE 123.0 FM (analog) AllStar 27701 — Washington, DC
48.7 W3BPT Hollywood
W3BPT Interstate
 146.8500 -0.6 CC1 DMR Interstate-3 — Hollywood, MD
48.8 K3GGM Hollywood
K3GGM BM
 446.5000 -5 CC1 DMR BrandMeister 3211901 — Hollywood, MD
48.9 W3NAB Washington
W3NAB AllStar
 442.7000 +5 TONE 103.5 FM (analog) AllStar 53645 — Washington, DC
48.9 N3AGB Ashton
N3AGB
 53.2500 -1 TSQL 100.0 FM (analog) — Ashton, MD
48.9 KC3BXH Ashton
KC3BXH EchoLink
 147.0000 -0.6 TONE 156.7 FM (analog) (FM,P25) EchoLink 105440 — Ashton, MD
48.9 K3WX Ashton
K3WX
 224.5400 -1.6 TONE 156.7 FM (analog) — Ashton, MD
48.9 KC3BXH Ashton
KC3BXH
 443.1500 +5 TSQL 156.7 FM (analog) (FM,P25) — Ashton, MD
48.9 KC3BXH Ashton
KC3BXH IRLP
 927.7250 -25 TONE 156.7 FM (analog) IRLP 4088 — Ashton, MD
49.1 N3MRG Tyaskin Muddy
N3MRG
 146.8650 -0.6 CC1 DMR — Tyaskin, MD
49.1 K3VOA Silver Spring
K3VOA AllStar
 447.5750 -5 TONE 77.0 FM (analog) AllStar 23919 — Silver Spring, MD
49.1 W3AGB Washington
W3AGB DMRVA
 444.1625 +5 CC1 DMR DMRVA — Washington, DC
49.1 W3AGB Washington
W3AGB K4USD
 147.3600 +0.6 CC1 DMR K4USD — Washington, DC
49.1 W3AGB Washington
W3AGB
 1283.1000 -12 none D-STAR — Washington, DC
49.3 K3VOA Washington Wilbu
K3VOA AllStar
 147.0450 +0.6 TSQL 77.0 FM (analog) AllStar 23918 — Washington, DC
49.3 K3OCM Salisbury
K3OCM K4USD
 442.6500 +5 CC6 DMR K4USD — Salisbury, MD
49.4 N3PPH Hollywood Fire
N3PPH
 145.3500 -0.6 TONE 156.7 FM (analog) — Hollywood, MD
49.5 W1JD Mechanicsville
W1JD BM
 439.8750 -5 CC8 DMR BrandMeister 3124132 — Mechanicsville, MD
49.5 KA3LAO Silver Spring
KA3LAO
 147.1800 +0.6 TONE 156.7 FM (analog) (FM,P25) — Silver Spring, MD
49.5 WB3GXW Silver Spring
WB3GXW EchoLink
 147.2250 +0.6 TONE 156.7 FM (analog) EchoLink 147225 — Silver Spring, MD
49.5 N3AUY Silver Spring
N3AUY
 29.6600 -0.1 TSQL 141.3 FM (analog) — Silver Spring, MD
49.5 N3AUY Silver Spring
N3AUY
 449.0250 -5 TONE 156.7 FM (analog) — Silver Spring, MD
49.7 W3PRO Salisbury
W3PRO
 145.2800 -0.6 none D-STAR — Salisbury, MD
49.7 W3PRO Salisbury
W3PRO
 146.9250 -0.6 TSQL 156.7 FM (analog) — Salisbury, MD
49.7 N3MRG Salisbury
N3MRG Interstate
 442.6500 +5 CC6 DMR Interstate — Salisbury, MD
49.7 K3RIC Salisbury
K3RIC
 444.0500 +5 none FM (analog) (FM,C4FM) — Salisbury, MD
49.7 W3PRO Salisbury
W3PRO
 444.2000 +5 none D-STAR — Salisbury, MD
49.8 N3PX Mechanicsville
N3PX
 147.1950 +0.6 TSQL 156.7 FM (analog) 🗓 1 net 1 net · 42 check-ins · 13 stations Mechanicsville, MD
50.0 K3OCM Charlotte Hall
K3OCM K4USD-Net
 443.1875 +5 CC6 DMR K4USD-Net — Charlotte Hall, MD
24.9 K3BAY Offline Pasadena
K3BAY IRLP
 145.5400 simplex TSQL 107.2 FM (analog) IRLP 4717 — Pasadena, MD
29.9 KP4IP Offline Millersville
KP4IP BM
 442.4000 +5 CC1 DMR BrandMeister 310148 — Millersville, MD
32.2 W3DAK Offline Middle River
W3DAK BM
 145.1700 -0.6 CC1 DMR BrandMeister 312377 — Middle River, MD
33.2 N3VSI Offline Edgewood
N3VSI AllStar
 146.5600 simplex TSQL 127.3 FM (analog) IRLP 8277 AllStar 29916 — Edgewood, MD
35.9 K3AYV Offline Baltimore Pigtow
K3AYV EchoLink
 442.9000 +5 TSQL 162.2 FM (analog) EchoLink — Baltimore, MD
36.3 W3XJ Offline Bowie
W3XJ
 442.1500 +5 none FM (analog) — Bowie, MD
40.0 N2MCS Offline Baltimore
N2MCS
 442.9000 +5 CC? DMR — Baltimore, MD
41.4 W3LRC Offline Jessup
W3LRC BM
 447.8500 -5 CC1 DMR BrandMeister 314342 — Jessup, MD
42.9 N3RCN Offline Elkton
N3RCN
 448.5750 -5 TONE 107.2 FM (analog) — Elkton, MD
43.8 WA3KOK Offline Clarksville
WA3KOK IRLP
 144.9700 simplex TSQL 107.2 FM (analog) IRLP 4542 — Clarksville, MD
43.8 WA3KOK Offline Laurel
WA3KOK IRLP
 144.4400 simplex none FM (analog) IRLP 4173 — Laurel, MD
45.7 WB3GXW Offline Silver Spring
WB3GXW
 444.2500 +5 TONE 156.7 FM (analog) — Silver Spring, MD
46.6 W3ARL Offline Adelphi
W3ARL
 145.3700 -0.6 none FM (analog) — Adelphi, MD
46.7 WA3SFJ Offline Port Deposit
WA3SFJ
 53.8300 -1 TONE 94.8 FM (analog) 🗓 1 net 1 net · 11 check-ins · 7 stations Port Deposit, MD
47.9 N3HF Offline Silver Spring
N3HF IRLP
 443.4500 +5 TSQL 156.7 FM (analog) IRLP 4712 — Silver Spring, MD
49.3 K3VOA Offline Washington Wilbu
K3VOA
 448.5750 -5 TSQL 77.0 FM (analog) — Washington, DC
49.5 KB3FWW Offline Hollywood
KB3FWW IRLP
 449.4900 simplex TSQL 146.2 FM (analog) IRLP 8856 — Hollywood, MD