| 145.45000 | 144.85000 | 123.0 PL | 123.0 PL | W3YMW | Allegany County - Warrior Mtn. (Linked to 146.8800) | Allegany |
| 146.88000 | 0.00000 | 123.0 PL | 123.0 PL | W3YMW | Skywarn (Mountain ARC) | Allegany |
| 147.24000 | 0.00000 | 123.0 PL | 123.0 PL | KK3L | ARES/RACES Secondary (Midland) | Allegany |
| 147.31500 | 147.91500 | 065 DPL | 065 DPL | KB3VJO | KB3VJO (Dan's Mountain) | Allegany |
| 442.75000 | 0.00000 | 167.9 PL | 167.9 PL | AB3FE | Skywarn | Allegany |
| 444.00000 | 449.00000 | 123.0 PL | 123.0 PL | KK3L | Allegany County - Dan's Rock (Linked to 147.2400) | Allegany |
| 444.50000 | 449.50000 | 118.8 PL | 118.8 PL | W3YMW | Allegany County - Dan's Rock (Linked to 146.8800) | Allegany |
| 146.43000 | 0.00000 | | | | Anne Arundel Radio Club Special Events | Anne Arundel |
| 146.80500 | 146.20500 | | 107.2 PL | W3CU | Skywarn (Sponsor: Maryland Mobileers) | Anne Arundel |
| 147.07500 | 147.67500 | 107.2 PL | 107.2 PL | W3VPR | Anne Arundel Radio Club (Crownsville) | Anne Arundel |
| 147.10500 | 147.70500 | CSQ | 107.2 PL | W3VPR | Anne Arundel Radio Club (Davidsonville) | Anne Arundel |
| 223.88000 | 222.28000 | 107.2 PL | 107.2 PL | W3VPR | Anne Arundel Radio Club (Davidsonville) | Anne Arundel |
| 224.56000 | 222.96000 | 107.2 PL | 107.2 PL | W3VPR | Anne Arundel Radio Club (Millersville) | Anne Arundel |
| 442.30000 | 447.30000 | 107.2 PL | 107.2 PL | KB3CMA | Anne Arundel Radio Club/Maryland Mobileers | Anne Arundel |
| 442.30000 | 447.30000 | | | KB3CMA | Anne Arundel Radio Club/Maryland Mobileers | Anne Arundel |
| 442.90000 | 447.90000 | 107.2 PL | | | Shared Non-Protected (used for special events in county) | Anne Arundel |
| 444.40000 | 449.40000 | CSQ | 107.2 PL | W3VPR | Anne Arundel Radio Club (Davidsonville) | Anne Arundel |
| 449.12500 | 444.12500 | CSQ | 107.2 PL | W3CU | Maryland Mobileers | Anne Arundel |
| 50.42000 | 0.00000 | CSQ | | W3DHS | | Baltimore |
| 50.54000 | 0.00000 | CSQ | | W3DHS | | Baltimore |
| 53.47000 | 52.47000 | | 107.2 PL | N3KTX | Baltimore County 6 Meter | Baltimore |
| 145.03000 | 0.00000 | | | W3DHS | Win Link | Baltimore |
| 146.41500 | 0.00000 | CSQ | | W3DHS | Emergency Operations Center (EOC) | Baltimore |
| 146.43000 | 0.00000 | CSQ | | W3DHS | District 1 | Baltimore |
| 146.44500 | 0.00000 | CSQ | | W3DHS | District 2 | Baltimore |
| 146.46000 | 0.00000 | CSQ | | W3DHS | District 3 | Baltimore |
| 146.67000 | 146.07000 | 107.2 PL | | W3FT | Primary (Baltimore Amateur Radio Club) | Baltimore |
| 147.03000 | 147.63000 | 123.0 PL | | WA3DZO | Baltimore Radio Amateur TV Society | Baltimore |
| 147.24000 | 147.84000 | CSQ | CSQ | W3PGA | Aero Amateur Radio Club | Baltimore |
| 223.61000 | 0.00000 | | | W3DHS | MT63 / Packet | Baltimore |
| 224.96000 | 223.36000 | 123.0 PL | CSQ | WA3DZO | Baltimore Radio Amateur TV Society | Baltimore |
| 432.08500 | 0.00000 | | | W3DHS | MT63 | Baltimore |
| 445.59000 | 0.00000 | CSQ | | W3DHS | District 1 | Baltimore |
| 446.02500 | 0.00000 | CSQ | | W3DHS | Emergency Operations Center (EOC) | Baltimore |
| 446.05000 | 0.00000 | CSQ | | W3DHS | District 2 | Baltimore |
| 446.92500 | 0.00000 | CSQ | | W3DHS | District 3 | Baltimore |
| 448.27500 | 443.27500 | 156.7 PL | 156.7 PL | K3CUJ | Columbia Amateur Radio Association | Baltimore |
| 448.32500 | 443.82500 | CSQ | CSQ | WA3DZO | Baltimore Radio Amateur TV Society | Baltimore |
| 449.27500 | 444.27500 | | 107.2 PL | N3CDY | Network Engineer's Repeater Association | Baltimore |
| 449.57500 | 444.57500 | | CSQ | W3PGA | Aero Amateur Radio Club | Baltimore |
| 449.67500 | 444.67500 | 127.3 PL | 167.9 PL | N3ST | Central Maryland Repeater Group (Baltimore) | Baltimore |
| 28.35000 | 0.00000 | | | | Calvert ARES HF Simplex | Calvert |
| 145.75000 | 0.00000 | | | K3CAL | 1200 baud packet digipeater | Calvert |
| 146.55000 | 0.00000 | | | | CALV06 - TAC 6 | Calvert |
| 146.55500 | 0.00000 | | | | Calvert RACES Simplex | Calvert |
| 146.58000 | 0.00000 | | | | Calvert ARES Primary Simplex Coordination | Calvert |
| 146.59500 | 0.00000 | | | | Calvert ARES Secondary Simplex Coordination | Calvert |
| 146.98500 | 146.38500 | 156.7 PL | 156.7 PL | | Sunderland FM | Calvert |
| 146.98500 | 146.38500 | | | | Sunderland YSF | Calvert |
| 223.90000 | 222.30000 | CSQ | 186.2 PL | W3SMD | W3SMD | Calvert |
| 444.95000 | 449.95000 | 156.7 PL | 156.7 PL | K3CAL | K3CAL Analog | Calvert |
| 444.95000 | 449.95000 | | | K3CAL | K3CAL Fusion | Calvert |
| 445.50000 | 0.00000 | | | | Calvert ARES UHF Primary Simplex | Calvert |
| 53.09000 | 0.00000 | CSQ | CSQ | | ARES Admin Net 2/Resource Net 2 | Carroll |
| 145.01000 | 0.00000 | | | | ARES Admin Net 1 Alternate - Packet | Carroll |
| 145.03000 | 0.00000 | | | | ARES Admin Net 1 - Packet | Carroll |
| 145.41000 | 144.91000 | CSQ | CSQ | K3PZO | ARES Resource Net 1/Skywarn (Carroll County Amateur Radio Club) | Carroll |
| 146.47500 | 0.00000 | CSQ | | | ARES Tac Net 1 | Carroll |
| 146.89500 | 146.29500 | | 107.2 PL | N3KZS | Carroll County | Carroll |
| 147.09000 | 0.00000 | | | | ARES MEMA Western Region Net | Carroll |
| 147.48000 | 0.00000 | CSQ | | | ARES Tac Net 2 | Carroll |
| 147.57000 | 0.00000 | CSQ | CSQ | | ARES Command Net | Carroll |
| 449.87500 | 0.00000 | CSQ | CSQ | | ARES Command Net - Alternate | Carroll |
| 145.47000 | 144.87000 | 94.8 PL | 94.8 PL | N3RCN | N3RCN | Cecil |
| 146.85000 | 146.25000 | 107.2 PL | | WA3SFJ | WA3SFJ Repeater | Cecil |
| 447.32500 | 442.32500 | | 131.8 PL | W3BXW | Bristol Emergency Amateur Radio System | Cecil |
| 145.39000 | 144.79000 | CSQ | 186.2 PL | W3ZO | W3ZO | Charles |
| 443.70000 | 448.70000 | 179.9 PL | 179.9 PL | KA3GRW | KA3GRW | Charles |
| 146.73000 | 146.13000 | 141.3 PL | | W3FDK | ARES/SKYWARN | Frederick |
| 147.06000 | 147.66000 | | 123.0 PL | K3MAD | MId-Atlantic DX | Frederick |
| 442.80000 | 447.80000 | 79.7 PL | 79.7 PL | N3ITA | N3ITA Analog | Frederick |
| 442.80000 | 447.80000 | 797 NAC | 797 NAC | N3ITA | N3ITA Digital | Frederick |
| 449.10000 | 444.10000 | CSQ | 167.9 PL | N3ST | Central Maryland Repeater Group (Frederick) | Frederick |
| 145.55000 | 0.00000 | | | | Skywarn Secondary | Garrett |
| 146.80500 | 146.20500 | | 123.0 PL | KB8NUF | Skywarn Primary - Eagle Rock area | Garrett |
| 145.33000 | 144.73000 | | CSQ | K3HT | Harford County | Harford |
| 145.67000 | 0.00000 | | 77.0 PL | K2SHF | K2SHF | Harford |
| 146.59500 | 0.00000 | | CSQ | | Harford County | Harford |
| 146.77500 | 146.17500 | | 146.2 PL | KC3FHC | Skywarn | Harford |
| 449.37500 | 444.37500 | CSQ | | W3EHY | W3EHY (Shawsville) | Harford |
| 146.76000 | 146.16000 | 107.2 PL | 107.2 PL | WA3DZD | Maryland FM Association | Howard |
| 147.13500 | 147.73500 | 156.7 PL | 156.7 PL | K3CUJ | Columbia Amateur Radio Association | Howard |
| 147.39000 | 147.99000 | 156.7 PL | 156.7 PL | K3CUJ | Columbia Amateur Radio Association | Howard |
| 224.76000 | 223.16000 | CSQ | 107.2 PL | WA3DZD | Maryland FM Association | Howard |
| 444.00000 | 449.00000 | CSQ | 107.2 PL | WA3DZD | Maryland FM Association | Howard |
| 449.47500 | 444.47500 | 156.7 PL | 156.7 PL | K3CUJ | Columbia Amateur Radio Association | Howard |
| 147.37500 | 147.97500 | | 156.7 PL | K3ARS | Kent Amateur Radio Society | Kent |
| 449.17500 | 444.17500 | | 156.7 PL | K3ARS | Kent Amateur Radio Society | Kent |
| 146.95500 | 146.35500 | CSQ | CSQ | KV3B | Montgomery Amateur Radio Club | Montgomery |
| 147.00000 | 146.40000 | 156.7 PL | | K3WX | K3WX | Montgomery |
| 147.22500 | 147.82500 | CSQ | 156.7 PL | WB3GXW | Laurel Amateur Radio Club | Montgomery |
| 145.23000 | 144.63000 | CSQ | 110.9 PL | WC3MAR | Central Maryland Amateur Radio Club | Prince George's |
| 145.37000 | 144.77000 | CSQ | CSQ | WB3FRW | US Army Research Lab (Adelphi) | Prince George's |
| 145.43000 | 144.83000 | CSQ | 114.8 PL | K3MRC | DCMARC | Prince George's |
| 145.49000 | 144.89000 | CSQ | CSQ | W3EAX | University of Maryland - College Park ARA | Prince George's |
| 146.61000 | 146.01000 | 77.0 PL | | K3GMR | Green Mountain Repeater Association (Bladensburg) | Prince George's |
| 146.83500 | 146.23500 | CSQ | CSQ | WA3NAN | Goddard Amateur Radio Club | Prince George's |
| 146.88000 | 146.28000 | 77.0 PL | | W3GMR | Green Mountain Repeater Association (Greenbelt) | Prince George's |
| 147.15000 | 147.75000 | | 114.8 PL | W3SMR | Skywarn (Southern Patuxent Amateur Radio Club (SPARC)) | Prince George's |
| 442.15000 | 447.15000 | CSQ | CSQ | W3XJ | Low Power Repeater - Bowie Area | Prince George's |
| 443.60000 | 448.60000 | CSQ | 103.5 PL | WA3YUV | Southern Maryland Amateur Radio Club | Prince George's |
| 444.70000 | 449.70000 | | 167.9 PL | WA3GPC | Central Maryland Repeater Group (Laurel) | Prince George's |
| 447.07500 | 442.07500 | CSQ | 167.9 PL | N3AST | Central Maryland Repeater Group (Orme) | Prince George's |
| 448.52500 | 443.52500 | | | KC3BFB | Fort Washington Amateur Radio Club | Prince George's |
| 448.92500 | 443.92500 | CSQ | 167.9 PL | N3ST | Central Maryland Repeater Group (Suitland) | Prince George's |
| 146.94000 | 146.34000 | | | | Queen Anne County RACES | Queen Anne's |
| 146.92500 | 146.32500 | 156.7 PL | | | Skywarn | Somerset |
| 146.64000 | 146.04000 | | 146.2 PL | K3HKI | St Mary's County ARA | St. Mary's |
| 146.85000 | 146.25000 | | | W3BPT | Hollywood | St. Mary's |
| 147.19500 | 147.79500 | | | N3PX | Skywarn (Southern Patuxent Amateur Radio Club) | St. Mary's |
| 147.19500 | 147.79500 | 156.7 PL | | | Mechanicsville | St. Mary's |
| 147.39000 | 147.99000 | 123.0 PL | | | Leonardtown | St. Mary's |
| 147.39000 | 147.99000 | | | | Leonardtown | St. Mary's |
| 443.30000 | 448.30000 | 156.7 PL | | N3PX | Skywarn (Southern Patuxent Amateur Radio Club) | St. Mary's |
| 443.30000 | 448.30000 | 123.0 PL | | | Leonardtown | St. Mary's |
| 443.30000 | 448.30000 | | | | Leonardtown | St. Mary's |
| 444.35000 | 448.35000 | | 156.7 PL | N3NO | Skywarn (Southern Patuxent Amateur Radio Club) | St. Mary's |
| 449.22500 | 444.22500 | CSQ | | N3PX | Skywarn (Southern Patuxent Amateur Radio Club) | St. Mary's |
| 147.04500 | 147.64500 | 156.7 PL | | K3EMD | RACES (Easton Amateur Radio Society (EARS)) | Talbot |
| 146.94000 | 146.34000 | 100.0 PL | | W3CWC | Antietam Radio Association - VHF | Washington |
| 147.09000 | 147.69000 | | 100.0 PL | W3CWC | Antietam Radio Association | Washington |
| 447.97500 | 442.97500 | 100.0 PL | | W3CWC | Antietam Radio Association - UHF | Washington |
| 146.82000 | 146.22000 | 156.7 PL | | | Skywarn | Wicomico |
| 144.39000 | 0.00000 | CSQ | | | APRS Digipeter (Located at the Seawatch Condo - 115th Street) | Worcester |
| 145.19000 | 144.59000 | 179.9 PL | 179.9 PL | N3RCC | Worcester County RACES | Worcester |
| 443.45000 | 448.45000 | 151.4 PL | 151.4 PL | N3HF | N3HF (Located at the Seawatch Condo - 115th Street) | Worcester |
