27 open repeaters found along US-301 
= On-Air
= Off-Air
= Testing/Reduced
= Unknown
| Frequency | Offset | Tone Up / Down | Location | State | County | Call | Modes | |
|---|---|---|---|---|---|---|---|---|
| 145.1200 | -0.6 MHz | Bel Air | MD | Harford | KC3FHC | DSTAR |  |
|
| 145.1400 | -0.6 MHz | 114.8 | Towson | MD | Baltimore | W3DHS | DSTAR | |
| 145.2300 | -0.6 MHz | 110.9 / 110.9 | District Heights | MD | Prince George's | K3ERA | FM EchoLink Fusion | |
| 145.3700 | -0.6 MHz | Adelphi | MD | Prince George's | W3ARL | FM | |
|
| 146.6100 | -0.6 MHz | CSQ / 77.0 | Bladensburg | MD | Prince George's | K3GMR | FM EchoLink | |
| 146.8050 | -0.6 MHz | 107.2 / CSQ | Millersville | MD | Anne Arundel | W3CU | FM EchoLink | |
| 146.8350 | -0.6 MHz | 114.8 | Greenbelt | MD | Prince George's | WA3NAN | FM EchoLink | |
| 146.8800 | -0.6 MHz | 77.0 / 77.0 | Greenbelt | MD | Prince George's | W3GMR | FM | |
| 146.9550 | -0.6 MHz | CSQ | Rockville | MD | Montgomery | KV3B | FM | |
| 147.0000 | -0.6 MHz | NAC 293 156.7 | Ashton | MD | Montgomery | KC3BXH | FM EchoLink P-25 | |
| 147.0750 | +0.6 MHz | 107.2 / 107.2 | Crownsville | MD | Anne Arundel | W3VPR | FM EchoLink | |
| 147.1050 | +0.6 MHz | 107.2 / CSQ | Davidsonville | MD | Anne Arundel | W3VPR | FM | |
| 147.1500 | +0.6 MHz | 114.8 / 114.8 | Brandywine | MD | Prince George's | W3SMR | FM | |
| 147.1800 | +0.6 MHz | NAC 293 156.7 | Silver Spring | MD | Montgomery | KA3LAO | FM P-25 | |
| 147.3750 | +0.6 MHz | 156.7 / 156.7 | Worton | MD | Kent | K3ARS | FM | |
| 223.8800 | -1.6 MHz | 107.2 / CSQ | Davidsonville | MD | Anne Arundel | W3VPR | FM | |
| 224.5400 | -1.6 MHz | 156.7 | Ashton | MD | Montgomery | K3WX | FM | |
| 441.9125 | +5 MHz | CC 1 | Wye Mills | MD | Talbot | N3YMS | DMR | |
| 442.1125 | +5 MHz | 114.8 | Towson | MD | Baltimore | W3DHS | DSTAR | |
| 442.3000 | +5 MHz | 107.2 / 107.2 | Annapolis, Broad Creek Park | MD | Anne Arundel | KB3CMA | FM Fusion | |
| 443.1500 | +5 MHz | NAC 293 156.7 / 156.7 | Ashton | MD | Montgomery | KC3BXH | FM P-25 | |
| 443.6000 | +5 MHz | 103.5 / 103.5 | Brandywine | MD | Prince George's | WA3YUV | FM Fusion | |
| 444.4000 | +5 MHz | 107.2 / 107.2 | Davidsonville | MD | Anne Arundel | W3VPR | FM | |
| 444.6500 | +5 MHz | CC 6 | Upper Marlboro | MD | Prince George's | N3LHD | DMR | |
| 448.2250 | -5 MHz | 107.2 | Centreville | MD | Queen Anne's | KE3AO | FM | |
| 449.1250 | -5 MHz | 107.2 | Millersville | MD | Anne Arundel | W3CU | FM Fusion | |
| 449.1750 | -5 MHz | 156.7 | Chestertown, Shore Med Ctr | MD | Kent | K3ARS | FM Fusion | |
|
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