HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WI📬 QSL: LoTW user · last upload Jul 1, 2009 · eQSL AG member · QRZ · HamQTH
Currently held by TIMOTHY S VELASQUEZ · 1 holder on record
🗓 Active on 3 nets · last heard Sep 17, 2026
Held KB3OSF Mar 12, 2007 → present · first licensed Mar 12, 2007 as KB3OSF · 1 license · FRN 0016213571
| Net | When | Frequency | Role | Times | Last |
|---|---|---|---|---|---|
| Charles County ARC | Wed 8:30 PM ET | 147.195 | Checked in | 2 | 2026-09-17 |
| Lower Potomac Net | Sun 8:00 PM ET | 146.64 | Checked in | 1 | 2026-09-13 |
| Weekly STMA ARES Net | Mon 6:30 PM · Mon 7:00 PM ET | 146.640 | Checked in | 1 | 2026-09-07 |
From nets logged with NetLogger since the start of collection.
No APRS positions, PSK Reporter reports or WSPR spots for KB3OSF in the last 24 hours. They show up here within seconds of KB3OSF beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.
16 on the air or of unknown status, closest first · map these & export for a GMRS radio →
| Miles | Channel | Output | Tone in | Owner | Location | Access | Status |
|---|---|---|---|---|---|---|---|
| 5 | RP17 | 462.600 | 141.3 | WRMJ802 | Lexington Park, MD | Open | On the air |
| 15 | RP19 | 462.650 | 110.9 | WRQV640 | Prince Frederick, MD · State Highway Admin Tower | Open | On the air |
| 32 | RP22 | 462.725 | 141.3 | WSKD955 | Waldorf, MD · Route 301 And Route 5 Split | Open | On the air |
| 42 | RP18 | 462.625 | 88.5 | WQMM856 | Largo, MD | Open | On the air |
| 44 | RP16 | 462.575 | 241.8 | WREZ274 | Capitol Heights, MD | Open | On the air |
| 45 | RP16 | 462.575 | 136.5 | WRDF311 | Alexandria, VA · Mount Vernon, VA | Open | On the air |
| 45 | RP21 | 462.700 | 141.3 | KAB7046 | Washington, DC · Anacostia | Open | On the air |
| 49 | RP18 | 462.625 | 141.3 | WSHN928 | Woodbridge, VA · Government Complex Center | Open | On the air |
| 49 | RP18 | 462.625 | 141.3 | WSHN928 | Woodbridge, VA · Government Complex Center | Open | On the air |
| 49 | RP18 | 462.625 | 141.3 | WSHN928 | Woodbridge, VA · Government Complex Center | Open | On the air |
| 49 | RP18 | 462.625 | 123.0 | WPON592 | Alexandria, VA · Fort Ward Park | Open | On the air |
| 49 | RP15 | 462.550 | 141.3 | WQMM856 | Lanham, MD · Doctor's Hospital | Open | On the air |
| 49 | RP15 | 462.550 | 136.5 | WRXD980 | Burtonsville, MD | Open | On the air |
| 49 | RP15 | 462.550 | — | WRYB934 | Chestertown, MD | Open | On the air |
| 49 | RP20 | 462.675 | 103.5 | WSAD893 | Baltimore, MD · Pasadena | Open | On the air |
| 49 | RP17 | 462.600 | 141.3 | KAB7046 | Alexandria, VA · West End | Open | On the air |
111 repeaters within 50 miles of this address, most active first · sort: closest · most active · map these & export for a radio →
| Miles | Call | Name | Output | Offset | Tone | Mode | Networks | Activity | Location |
|---|---|---|---|---|---|---|---|---|---|
| 40.0 | W3VPR | Davidsonville W3VPR |
147.1050 | +0.6 | TONE 107.2 | FM (analog) | 🗓 5 nets | 5 nets · 577 check-ins · 81 stations | Davidsonville, MD |
| 40.0 | W3VPR | Davidsonville W3VPR |
223.8800 | -1.6 | TONE 107.2 | FM (analog) | 🗓 5 nets | 5 nets · 577 check-ins · 81 stations | Davidsonville, MD |
| 40.0 | W3VPR | Davidsonville W3VPR |
444.4000 | +5 | TSQL 107.2 | FM (analog) | 🗓 5 nets | 5 nets · 577 check-ins · 81 stations | Davidsonville, MD |
| 46.7 | W3VPR | Crownsville W3VPR EchoLink |
147.0750 | +0.6 | TSQL 107.2 | FM (analog) | EchoLink 524902 🗓 5 nets | 5 nets · 577 check-ins · 81 stations | Crownsville, MD |
| 10.3 | K3HKI | Lexington Park K3HKI |
146.6400 | -0.6 | TSQL 146.2 | FM (analog) | 🗓 3 nets | 3 nets · 99 check-ins · 44 stations | Lexington Park, MD |
| 47.4 | N3JLT | Alexandria N3JLT Interstate |
443.1000 | +5 | CC1 | DMR | Interstate 🗓 1 net | 1 net · 89 check-ins · 45 stations | Alexandria, VA |
| 43.1 | 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 |
| 49.4 | K3ERA | Lanham DC Hosp K3ERA |
447.3250 | -5 | TONE 110.9 | FM (analog) | 🗓 2 nets | 2 nets · 39 check-ins · 15 stations | Lanham, MD |
| 17.7 | N3PX | Mechanicsville N3PX |
147.1950 | +0.6 | TSQL 156.7 | FM (analog) | 🗓 1 net | 1 net · 34 check-ins · 12 stations | Mechanicsville, MD |
| 45.5 | W4HFH | Alexandria W4HFH DMRVA |
442.4125 | +5 | CC1 | DMR | DMRVA 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 45.5 | W4HFH | Alexandria W4HFH |
927.6000 | -25 | TSQL 107.2 | FM (analog) | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.6 | W4HFH | Alexandria W4HFH |
145.3800 | -0.6 | none | D-STAR | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.6 | W4HFH | Alexandria Hosp W4HFH |
442.0600 | +5 | none | D-STAR | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.6 | W4HFH | Alexandria Hosp W4HFH |
1284.6000 | -12 | none | D-STAR | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.9 | W4HFH | Alexandria W4HFH |
53.1300 | -1 | TONE 107.2 | FM (analog) | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.9 | W4HFH | Alexandria W4HFH |
147.3150 | +0.6 | TONE 107.2 | FM (analog) | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.9 | W4HFH | Alexandria W4HFH |
224.8200 | -1.6 | TONE 107.2 | FM (analog) | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.9 | W4HFH | Alexandria W4HFH |
444.6000 | +5 | TONE 107.2 | FM (analog) | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 48.9 | W4HFH | Alexandria W4HFH |
1282.6000 | -12 | TONE 107.2 | FM (analog) | 🗓 1 net | 1 net · 34 check-ins · 18 stations | Alexandria, VA |
| 10.5 | KC3FOQ | Leonardtown Fair KC3FOQ |
443.3000 | +5 | TONE 123.0 | FM (analog) (FM,C4FM) | 🗓 2 nets | 2 nets · 13 check-ins · 10 stations | Leonardtown, MD |
| 10.5 | KC3FOQ | Leonardtown Fair KC3FOQ |
147.3900 | +0.6 | TONE 146.2 | FM (analog) (FM,C4FM) | 🗓 2 nets | 2 nets · 13 check-ins · 10 stations | Leonardtown, MD |
| 2.3 | K3CAL | Lusby Appeal K3CAL EchoLink |
444.9500 | +5 | TSQL 156.7 | FM (analog) (FM,C4FM) | EchoLink 389207 🗓 1 net | 1 net | Lusby, MD |
| 24.0 | K3CAL | Sunderland K3CAL EchoLink |
146.9850 | -0.6 | TONE 156.7 | FM (analog) (FM,C4FM) | EchoLink 389207 🗓 1 net | 1 net | Sunderland, MD |
| 39.6 | K3DRC | Salisbury WMDT K3DRC |
146.8200 | -0.6 | TSQL 156.7 | FM (analog) | 🗓 1 net | 1 net | Salisbury, MD |
| 4.0 | K3GGM | Hollywood K3GGM BM |
446.5000 | -5 | CC1 | DMR | BrandMeister 3211901 | — | Hollywood, MD |
| 4.1 | W1JD | Mechanicsville W1JD BM |
439.8750 | -5 | CC8 | DMR | BrandMeister 3124132 | — | Mechanicsville, MD |
| 5.1 | KB2SKP | Lexington Park KB2SKP BM |
446.0125 | in 433.0125 | CC1 | DMR | BrandMeister 314491901 | — | Lexington Park, MD |
| 5.5 | KB2SKP | Lexington Park KB2SKP WIRES-X |
445.2500 | -5 | DG-ID 00-00 | Fusion (C4FM) | WIRES-X 74906 | — | Lexington Park, MD |
| 7.2 | W3BPT | Hollywood W3BPT Interstate |
146.8500 | -0.6 | CC1 | DMR | Interstate-3 | — | Hollywood, MD |
| 7.4 | N3PPH | Hollywood Fire N3PPH |
145.3500 | -0.6 | TONE 156.7 | FM (analog) | — | Hollywood, MD | |
| 7.5 | KB3FWW offline | Hollywood KB3FWW IRLP |
449.4900 | simplex | TSQL 146.2 | FM (analog) | IRLP 8856 | — | Hollywood, MD |
| 10.9 | N3PPH | Mechanicsville N3PPH Interstate |
441.7875 | +5 | CC1 | DMR | Interstate-2 | — | Mechanicsville, MD |
| 15.2 | N3PPH | Prince Frederick N3PPH Interstate |
441.3875 | +5 | CC1 | DMR | Interstate-3 | — | Prince Frederick, MD |
| 15.6 | W3SMD | Barstow W3SMD AllStar |
223.9000 | -1.6 | TONE 186.2 | FM (analog) | AllStar 513100 | — | Barstow, MD |
| 15.6 | N3FI | Barstow N3FI |
443.7000 | +5 | TSQL 179.9 | FM (analog) (FM,C4FM) | — | Barstow, MD | |
| 16.9 | W3PQS | Prince Frederick W3PQS |
53.1700 | -1 | TSQL 100.0 | FM (analog) | — | Prince Frederick, MD | |
| 18.6 | N3KUN | Chaptico N3KUN |
145.2500 | -0.6 | TONE 110.9 | FM (analog) | — | Chaptico, MD | |
| 19.7 | WG3K | Chesapeake Beach WG3K BM |
444.3500 | +5 | none | D-STAR (DMR,DV) | BrandMeister 312393 | — | Chesapeake Beach, MD |
| 20.3 | K3OCM | Charlotte Hall K3OCM K4USD-Net |
443.1875 | +5 | CC6 | DMR | K4USD-Net | — | Charlotte Hall, MD |
| 22.5 | N3LHD | Aquasco N3LHD Interstate |
442.4625 | +5 | CC1 | DMR | Interstate-c-Bridge-1 | — | Aquasco, MD |
| 24.0 | N3PPH | Sunderland Mt N3PPH Interstate |
441.6375 | +5 | CC1 | DMR | Interstate-2 | — | Sunderland, MD |
| 24.9 | K6XH | Callao K6XH BM |
443.0875 | +5 | CC1 | DMR | BrandMeister 314364 | — | Callao, VA |
| 28.5 | K3EMD | Easton K3EMD WIRES-X |
147.0450 | +0.6 | TSQL 156.7 | FM (analog) | WIRES-X 43142 | — | Easton, MD |
| 29.1 | KF4AH | Montross KF4AH |
146.8950 | -0.6 | TSQL 110.9 | FM (analog) | — | Montross, VA | |
| 29.9 | W4NNK | Heathsville W4NNK |
147.3300 | +0.6 | TONE 100.0 | FM (analog) | — | Heathsville, VA | |
| 30.3 | N3YMS | Trappe N3YMS Interstate |
442.5375 | +5 | CC1 | DMR | Interstate | — | Trappe, MD |
| 30.6 | WX4EMC offline | Heathsville WCNV WX4EMC DMRVA |
442.7000 | +5 | CC1 | DMR | DMRVA | — | Heathsville, VA |
| 30.7 | N3PZZ | Dahlgren Potomac N3PZZ |
145.2500 | -0.6 | TONE 88.5 | FM (analog) | — | Dahlgren, VA | |
| 32.3 | N3PZZ | King George Dahl N3PZZ |
145.3300 | -0.6 | TONE 88.5 | FM (analog) | — | King George, VA | |
| 32.3 | N3MRG | Tyaskin Muddy N3MRG |
146.8650 | -0.6 | CC1 | DMR | — | Tyaskin, MD | |
| 32.7 | WA3YUV | Brandywine WA3YUV |
443.6000 | +5 | TSQL 103.5 | FM (analog) (FM,C4FM) | — | Brandywine, MD | |
| 33.8 | W3SMR | Brandywine W3SMR |
147.1500 | +0.6 | TSQL 114.8 | FM (analog) | — | Brandywine, MD | |
| 35.1 | K3EMD | Easton URM Ctr K3EMD WIRES-X |
442.2000 | +5 | TSQL 156.7 | FM (analog) (FM,C4FM) | WIRES-X 33142 | — | Easton, MD |
| 35.2 | KC8VFN | King George Locu KC8VFN |
146.7750 | -0.6 | TSQL 110.9 | FM (analog) | — | King George, VA | |
| 40.1 | W3OR | Crisfield McCrea W3OR |
145.1300 | -0.6 | CC1 | DMR | — | Crisfield, MD | |
| 40.1 | KC3BFB | Fort KC3BFB |
146.7150 | -0.6 | TONE 110.9 | FM (analog) | — | Fort Washington, MD | |
| 40.6 | N3RKT | Crisfield N3RKT WIRES-X |
145.1100 | -0.6 | TSQL 156.7 | FM (analog) (FM,C4FM) | WIRES-X 30213 | — | Crisfield, MD |
| 40.9 | KC3DVC | Crisfield KC3DVC Interstat |
145.1300 | -0.6 | CC1 | DMR | Interstate | — | Crisfield, MD |
| 41.3 | W4KGC | King George W4KGC |
146.7450 | -0.6 | TSQL 107.2 | FM (analog) | — | King George, VA | |
| 41.3 | K4GVA | King George K4GVA |
448.4750 | -5 | TONE 79.7 | FM (analog) | — | King George, VA | |
| 41.8 | KA3MRX | Princess Anne KA3MRX |
146.6250 | -0.6 | TONE 156.7 | FM (analog) | — | Princess Anne, MD | |
| 42.2 | N3LHD | Upper Marlboro N3LHD Interstate |
444.6500 | +5 | CC6 | DMR | Interstate-c-Bridge-1 | — | Upper Marlboro, MD |
| 42.3 | W4ATN | Largo W4ATN MARC |
443.7875 | +5 | CC3 | DMR | DMR-MARC | — | Largo, MD |
| 42.7 | N3YMS | Eden N3YMS Interstate |
441.8875 | +5 | CC2 | DMR | Interstate | — | Eden, MD |
| 42.7 | W3OR | Westover W3OR |
145.3200 | -0.6 | none | FM (analog) | — | Westover, MD | |
| 43.2 | W4NNK | Kilmarnock W4NNK |
146.8350 | -0.6 | TONE 100.0 | FM (analog) | — | Kilmarnock, VA | |
| 43.3 | N3KNT | Federalsburg N3KNT Interstate |
442.0500 | +5 | CC1 | DMR | Interstate-2-Network | — | Federalsburg, MD |
| 44.1 | W4GSF | Kilmarnock Fire W4GSF |
145.4500 | -0.6 | none | FM (analog) | — | Kilmarnock, VA | |
| 44.2 | W4GSF | Kilmarnock W4GSF |
146.8350 | -0.6 | TONE 173.8 | FM (analog) | — | Kilmarnock, VA | |
| 44.2 | KB3CMA | Annapolis Broad KB3CMA Interstat |
441.8375 | +5 | CC1 | DMR | Interstate-3 | — | Annapolis, MD |
| 44.2 | KB3CMA | Annapolis Broad KB3CMA |
442.3000 | +5 | TSQL 107.2 | FM (analog) (C4FM,FM) | — | Annapolis, MD | |
| 45.5 | N4FRS | Alexandria N4FRS |
449.3750 | -5 | TONE 203.5 | FM (analog) (FM,DV) | — | Alexandria, VA | |
| 45.5 | W3PRO | Salisbury W3PRO |
145.2800 | -0.6 | none | D-STAR | — | Salisbury, MD | |
| 45.5 | W3PRO | Salisbury W3PRO |
146.9250 | -0.6 | TSQL 156.7 | FM (analog) | — | Salisbury, MD | |
| 45.5 | N3MRG | Salisbury N3MRG Interstate |
442.6500 | +5 | CC6 | DMR | Interstate | — | Salisbury, MD |
| 45.5 | K3RIC | Salisbury K3RIC |
444.0500 | +5 | none | FM (analog) (FM,C4FM) | — | Salisbury, MD | |
| 45.5 | W3PRO | Salisbury W3PRO |
444.2000 | +5 | none | D-STAR | — | Salisbury, MD | |
| 45.8 | W3GAB | Stevensville W3GAB BM |
433.8000 | +5 | CC1 | DMR | BrandMeister 321788101 | — | Stevensville, MD |
| 46.0 | W3HAC | Washington W3HAC |
444.1625 | +5 | CC0 | DMR | — | Washington, DC | |
| 46.2 | N4FRS | Alexandria N4FRS |
1283.2000 | -12 | TSQL 203.5 | FM (analog) (FM,DV) | — | Alexandria, VA | |
| 46.3 | K3OCM | Salisbury K3OCM K4USD |
442.6500 | +5 | CC6 | DMR | K4USD | — | Salisbury, MD |
| 46.4 | K4US | Alexandria GW K4US |
146.6550 | -0.6 | TSQL 141.3 | FM (analog) (C4FM,FM) | — | Alexandria, VA | |
| 47.1 | N3HAZ | Annapolis N3HAZ BM |
439.5500 | in 433.5500 | CC1 | DMR | BrandMeister 3197367 | — | Annapolis, MD |
| 47.6 | WA3RF | Cheverly WA3RF AllStar |
441.0000 | +5 | TONE 173.8 | FM (analog) | AllStar 57512 | — | Cheverly, MD |
| 47.7 | W3NAB | Washington W3NAB AllStar |
442.7000 | +5 | TONE 103.5 | FM (analog) | AllStar 53645 | — | Washington, DC |
| 48.5 | K3WS | Washington K3WS AllStar |
443.3750 | -5 | TONE 123.0 | FM (analog) | AllStar 27701 | — | Washington, DC |
| 48.5 | K3WS | Washington K3WS AllStar |
447.3750 | -5 | TONE 123.0 | FM (analog) | AllStar 27701 | — | Washington, DC |
| 48.5 | K4MMJ | Fredericksb FMl8 K4MMJ BM |
433.1000 | +5 | CC1 | DMR | BrandMeister 317511602 | — | Fredericksburg, FMl8, VA |
| 48.5 | WD4HRO | Woodbridge WD4HRO |
1293.0000 | -20 | none | D-STAR | — | Woodbridge, VA | |
| 48.5 | K3VOA | Washington Wilbu K3VOA AllStar |
147.0450 | +0.6 | TSQL 77.0 | FM (analog) | AllStar 23918 | — | Washington, DC |
| 48.5 | K3VOA offline | Washington Wilbu K3VOA |
448.5750 | -5 | TSQL 77.0 | FM (analog) | — | Washington, DC | |
| 48.7 | N8HM | Arlington N8HM BM |
438.4500 | -5 | CC1 | DMR | BrandMeister 311101701 | — | Arlington, VA |
| 48.8 | KA4DCS | Woodbridge Potom KA4DCS |
444.8500 | +5 | none | FM (analog) | — | Woodbridge, VA | |
| 48.8 | K3GMR | Bladensburg K3GMR EchoLink |
146.6100 | -0.6 | TSQL 77.0 | FM (analog) | EchoLink 796114 | — | Bladensburg, MD |
| 48.9 | KC3FCQ | Arnold KC3FCQ BM |
442.8750 | +5 | CC1 | DMR | BrandMeister 312411801 | — | Arnold, MD |
| 49.1 | W3XJ offline | Bowie W3XJ |
442.1500 | +5 | none | FM (analog) | — | Bowie, MD | |
| 49.2 | K0BMM | Arlington K0BMM BM |
447.3125 | -5 | CC1 | DMR | BrandMeister 322315305 | — | Arlington, VA |
| 49.2 | W3TBG | Seaford W3TBG |
444.9000 | +5 | TONE 156.7 | FM (analog) | — | Seaford, DE | |
| 49.2 | N3YMS | Seaford N3YMS Interstate |
442.8125 | +5 | CC1 | DMR | Interstate | — | Seaford, DE |
| 49.3 | N3SCP | Gambrills N3SCP WIRES-X |
447.5500 | -5 | DG-ID 00-00 | Fusion (C4FM) | WIRES-X 18557 | — | Gambrills, MD |
| 49.3 | N3SCP | Gambrills N3SCP WIRES-X |
442.5500 | +5 | TONE 107.2 | FM (analog) (FM,C4FM) | WIRES-X 18557 | — | Gambrills, MD |
| 49.4 | N3KNT | Seaford N3KNT EchoLink |
146.7150 | -0.6 | TONE 156.7 | FM (analog) | EchoLink 959058 | — | Seaford, DE |
| 49.5 | W3AGB | Washington W3AGB DMRVA |
444.1625 | +5 | CC1 | DMR | DMRVA | — | Washington, DC |
| 49.5 | W3AGB | Washington W3AGB K4USD |
147.3600 | +0.6 | CC1 | DMR | K4USD | — | Washington, DC |
| 49.5 | W3AGB | Washington W3AGB |
1283.1000 | -12 | none | D-STAR | — | Washington, DC | |
| 49.6 | W3TBG | Seaford WSUX W3TBG WIRES-X |
145.2100 | -0.6 | TONE 156.7 | FM (analog) (C4FM,FM) | WIRES-X 46540 WIRES-X 36540 | — | Seaford, DE |
| 49.7 | W3HAC | Washington W3HAC |
147.3600 | +0.6 | CC1 | DMR | — | Washington, DC | |
| 49.7 | W3HAC | Washington W3HAC |
1283.1000 | -12 | none | D-STAR | — | Washington, DC | |
| 49.7 | K3MRC offline | Washington K3MRC |
145.4300 | -0.6 | TSQL 114.8 | FM (analog) (FM,C4FM) | — | Washington, DC | |
| 49.7 | KC3VO offline | Washington KC3VO |
448.8750 | -5 | none | FM (analog) | — | Washington, DC | |
| 49.8 | KB3IAI | Gambrills KB3IAI BM |
439.9000 | in 438.2000 | CC1 | DMR | BrandMeister 3172111 | — | Gambrills, MD |