N9TPB FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · 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

Michael J Erpenbach

FRN 0029542156 · first licensed May 21, 2020 as KO4DPV · 2 licenses on record

📝 FCC applications (2)

ReceivedFile numberServicePurposeStatusCall
May 21, 20200009087886 HAMModificationGranted KO4DPV
May 21, 20200009087344 HAMNew licenseGranted KO4DPV

Complete licensing history

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

Repeaters within 50 miles

78 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
3.1 K4LLE Lexington S
K4LLE
 147.0000 +0.6 TSQL 123.0 FM (analog) (FM,P25) 🗓 2 nets 2 nets · 70 check-ins · 30 stations Lexington, SC
6.7 N5CWH Gilbert
N5CWH
 146.6550 -0.6 TSQL 156.7 FM (analog) — Gilbert, SC
6.7 KC4GYM Gilbert
KC4GYM IRLP
 224.5600 -1.6 TSQL 162.2 FM (analog) IRLP 4109 — Gilbert, SC
9.6 KG4UAL Leesville
KG4UAL AllStar
 444.4000 +5 DCS 315 FM (analog) AllStar 558721 — Leesville, SC
10.4 W4RRC Leesville
W4RRC AllStar
 147.2550 +0.6 TONE 123.0 FM (analog) AllStar 50790 🗓 1 net 1 net · 10 check-ins · 10 stations Leesville, SC
15.6 WR4SC Little Mountain
WR4SC NC-PRN
 443.5375 +5 CC1 DMR NC-PRN 🗓 2 nets 2 nets · 207 check-ins · 97 stations Little Mountain, SC
15.8 W4DZF Columbia St
W4DZF
 145.2700 -0.6 DCS 632 FM (analog) — Columbia, SC
15.8 W4FTK Little Mt
W4FTK AllStar
 443.8750 +5 DCS 315 FM (analog) AllStar 40040 EchoLink 367365 🗓 2 nets 2 nets · 540 check-ins · 248 stations Little Mt, SC
15.9 W4FTK Little Mountain
W4FTK AllStar
 146.6250 -0.6 DCS 315 FM (analog) AllStar 40040 EchoLink 367365 🗓 2 nets 2 nets · 540 check-ins · 248 stations Little Mountain, SC
16.5 WR4SC Little Mountain
WR4SC
 147.2100 +0.6 TSQL 156.7 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Little Mountain, SC
16.5 N4UHF Little Mountain
N4UHF
 444.6500 +5 CC0 DMR — Little Mountain, SC
17.0 KF4NQN Monettta
KF4NQN AllStar
 446.6000 -5 TONE 156.7 FM (analog) AllStar 28575 — Monettta, SC
18.1 W4EAE Cayce
W4EAE
 433.1000 +5 CC1 DMR — Cayce, SC
18.1 W4EAE Cayce
W4EAE
 443.1000 +5 none D-STAR (DMR,DV) — Cayce, SC
18.5 W4CAE Columbia
W4CAE AllStar
 147.3300 +0.6 TSQL 156.7 FM (analog) AllStar 494460 🗓 2 nets 2 nets · 93 check-ins · 43 stations Columbia, SC
18.5 K4HI Columbia
K4HI WIRES-X
 147.3600 +0.6 TSQL 100.0 FM (analog) WIRES-X 64927 — Columbia, SC
18.5 WR4SC Columbia Capital
WR4SC NC-PRN
 440.6125 +5 CC1 DMR NC-PRN 🗓 2 nets 2 nets · 207 check-ins · 97 stations Columbia, SC
18.5 K9OH Columbia
K9OH AllStar
 444.8750 +5 TSQL 91.5 FM (analog) AllStar 417861 — Columbia, SC
18.6 W4FTK Columbia
W4FTK AllStar
 442.8750 +5 DCS 315 FM (analog) AllStar 40040 EchoLink 367365 🗓 2 nets 2 nets · 540 check-ins · 248 stations Columbia, SC
22.1 W4FTK Saluda Sheriffs
W4FTK AllStar
 147.7500 -0.6 TONE 123.0 FM (analog) AllStar EchoLink 🗓 2 nets 2 nets · 540 check-ins · 248 stations Saluda, SC
25.4 AF4E Saluda Wtr Tank
AF4E AllStar
 146.9100 -0.6 TSQL 123.0 FM (analog) AllStar 458591 — Saluda, SC
26.3 WR4SC Columbia
WR4SC
 441.7250 +5 TONE 91.5 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Columbia, SC
26.3 WR4SC Columbia
WR4SC NC-PRN
 442.5125 +5 CC1 DMR NC-PRN 🗓 2 nets 2 nets · 207 check-ins · 97 stations Columbia, SC
26.3 KJ4BWK Columbia
KJ4BWK
 442.2000 +5 none D-STAR — Columbia, SC
26.3 KJ4BWK Columbia
KJ4BWK
 1282.2250 +12 none D-STAR — Columbia, SC
27.9 W4FTK Blythewood
W4FTK AllStar
 443.6500 +5 DCS 315 FM (analog) AllStar 40040 EchoLink 367365 🗓 2 nets 2 nets · 540 check-ins · 248 stations Blythewood, SC
29.0 K1LVA Aiken
K1LVA AllStar
 145.7700 simplex TONE 131.8 FM (analog) AllStar 28249 EchoLink 179307 — Aiken, SC
30.1 KQ4NOR Glymphville
KQ4NOR AllStar
 146.9550 simplex TONE 186.2 FM (analog) AllStar 66357 — Glymphville, SC
30.6 W4CAE Fort Jackson
W4CAE
 146.7750 -0.6 TSQL 156.7 FM (analog) 🗓 2 nets 2 nets · 93 check-ins · 43 stations Fort Jackson, SC
31.7 W4DV Trenton
W4DV
 145.3900 -0.6 TSQL 71.9 FM (analog) 🗓 5 nets 5 nets · 435 check-ins · 89 stations Trenton, SC
31.7 W4DV Trenton
W4DV
 442.5500 +5 CC1 DMR 🗓 5 nets 5 nets · 435 check-ins · 89 stations Trenton, SC
32.8 WR4EC Edgefield
WR4EC
 146.8500 -0.6 TSQL 91.5 FM (analog) — Edgefield, SC
33.4 N2ZZ Aiken
N2ZZ BM
 443.4625 +5 CC1 DMR BrandMeister 314500 🗓 4 nets 4 nets · 97 check-ins · 62 stations Aiken, SC
34.2 KI4IVP Elgin
KI4IVP WIRES-X
 147.2400 +0.6 TSQL 103.5 FM (analog) (FM,C4FM) WIRES-X 18449 — Elgin, SC
34.2 KR4AIK Aiken Old Hosp
KR4AIK
 145.1600 -0.6 none D-STAR — Aiken, SC
34.2 KR4AIK Aiken Old Hosp
KR4AIK
 443.4125 +5 none D-STAR — Aiken, SC
34.4 KJ4QLH Neeses
KJ4QLH
 147.0900 +0.6 TONE 156.7 FM (analog) — Neeses, SC
34.8 N4ADM Aiken
N4ADM
 147.2850 +0.6 none FM (analog) — Aiken, SC
35.7 WR4SC Aiken
WR4SC
 441.5250 +5 TONE 91.5 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Aiken, SC
35.8 N2ZZ Aiken Reg Med
N2ZZ EchoLink
 145.3500 -0.6 TSQL 156.7 FM (analog) EchoLink 5764 🗓 4 nets 4 nets · 97 check-ins · 62 stations Aiken, SC
36.2 N4ADI Aiken
N4ADI
 146.8050 -0.6 none FM (analog) — Aiken, SC
36.2 N4ADI Aiken
N4ADI
 440.7125 +5 none D-STAR — Aiken, SC
36.2 N4ADI Aiken
N4ADI
 443.0000 +5 none FM (analog) (DMR,FM) — Aiken, SC
36.2 N4ADI Aiken
N4ADI BM
 444.0375 +5 CC0 DMR BrandMeister 310972 — Aiken, SC
36.2 N4ADI Aiken
N4ADI
 927.7000 -25 none P25 — Aiken, SC
36.6 KJ4BWK Saint Matthews
KJ4BWK
 145.4000 -0.6 none D-STAR — Saint Matthews, SC
38.0 W4DV Trenton
W4DV EchoLink
 145.4900 -0.6 TSQL 71.9 FM (analog) EchoLink 128921 🗓 5 nets 5 nets · 435 check-ins · 89 stations Trenton, SC
38.0 W4DV Trenton
W4DV
 444.9500 +5 TSQL 71.9 FM (analog) 🗓 5 nets 5 nets · 435 check-ins · 89 stations Trenton, SC
39.0 AD4U Saint Matthews
AD4U
 146.6700 -0.6 TSQL 156.7 FM (analog) — Saint Matthews, SC
39.0 N7GZT Saint Matthews
N7GZT
 53.2100 -1 none FM (analog) — Saint Matthews, SC
39.9 N7GZT Saint Hemlock rd
N7GZT AllStar
 442.7750 +5 TSQL 156.7 FM (analog) AllStar 637120 — Saint Matthews, SC
41.7 KJ4QLH Orangeburg /Calh
KJ4QLH
 147.3900 +0.6 TSQL 156.7 FM (analog) — Orangeburg, SC
41.7 KI4RAX Lugoff
KI4RAX
 146.8200 -0.6 TSQL 91.5 FM (analog) (FM,C4FM) — Lugoff, SC
41.7 KI4RAX Lugoff
KI4RAX
 441.8000 +5 none D-STAR (DV,DMR) — Lugoff, SC
42.0 WR4SC Orangeburg
WR4SC
 146.8800 -0.6 TSQL 123.0 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Orangeburg, SC
42.0 WR4SC Orangeburg
WR4SC NC-PRN
 440.5875 +5 CC1 DMR NC-PRN 🗓 2 nets 2 nets · 207 check-ins · 97 stations Orangeburg, SC
42.0 WR4SC Orangeburg
WR4SC
 441.7500 +5 TONE 123.0 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Orangeburg, SC
47.0 KE4RAP North Augusta
KE4RAP WIRES-X
 146.9400 -0.6 Fusion (C4FM) WIRES-X 92023 — North Augusta, SC
47.0 KE4RAP North Augusta
KE4RAP
 444.8000 +5 TSQL 146.2 FM (analog) — North Augusta, SC
47.4 K4NAB North Augusta
K4NAB
 146.7300 -0.6 none FM (analog) — North Augusta, SC
47.4 KG4HIR North Augusta
KG4HIR
 927.8000 -25 TSQL 146.2 FM (analog) — North Augusta, SC
47.4 W4FTK Clinton
W4FTK AllStar
 443.6750 +5 DCS 315 FM (analog) AllStar 40040 EchoLink 367365 🗓 2 nets 2 nets · 540 check-ins · 248 stations Clinton, SC
47.4 KM4LOD Beech Island
KM4LOD
 145.2600 -0.6 none FM (analog) (DV,FM) — Beech Island, SC
47.4 KM4LOD Beech Island
KM4LOD
 440.5500 +5 none FM (analog) (DV,FM) — Beech Island, SC
47.5 WR4SC Beech Island
WR4SC
 147.3450 +0.6 TONE 91.5 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Beech Island, SC
47.5 WR4SC Beech Island
WR4SC
 443.1250 +5 TONE 91.5 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Beech Island, SC
47.9 W4FTK Wedgefield
W4FTK AllStar
 147.0600 +0.6 DCS 315 FM (analog) AllStar 40040 EchoLink 367365 🗓 2 nets 2 nets · 540 check-ins · 248 stations Wedgefield, SC
48.1 WR4SC Beech Island
WR4SC NC-PRN
 444.2875 +5 CC1 DMR NC-PRN 🗓 2 nets 2 nets · 207 check-ins · 97 stations Beech Island, SC
48.5 W4GWM Greenwood
W4GWM
 145.4200 -0.6 none D-STAR — Greenwood, SC
48.9 W4GWD Greenwood
W4GWD
 443.9000 +5 TONE 107.2 FM (analog) — Greenwood, SC
49.5 WB4TGK Bamberg
WB4TGK
 145.3300 -0.6 TONE 156.7 FM (analog) — Bamberg, SC
49.6 KK4BQ Barnwell
KK4BQ
 147.3750 +0.6 TONE 91.5 FM (analog) — Barnwell, SC
49.6 WR4SC Barnwell
WR4SC
 147.0300 +0.6 TSQL 156.7 FM (analog) 🗓 2 nets 2 nets · 207 check-ins · 97 stations Barnwell, SC
10.3 KG4GKY offline West Columbia
KG4GKY IRLP
 446.8750 simplex TSQL 79.7 FM (analog) IRLP 4045 — West Columbia, SC
16.1 W4EAE offline Cayce
W4EAE IRLP
 147.5100 simplex TSQL 131.8 FM (analog) IRLP 8255 — Cayce, SC
18.5 N4EOY offline Columbia
N4EOY
 224.9000 -1.6 none FM (analog) — Columbia, SC
36.2 N4ADI offline Punta Gorda
N4ADI
 444.6500 +5 CC? DMR — Punta Gorda, FL
49.6 KK4BQ offline Barnwell
KK4BQ
 449.2500 -5 TONE 156.7 FM (analog) — Barnwell, SC

Vanity applications

Filed · AwardApplicantRequested (in order)Status
Filed May 21, 2020
Granted Jun 9, 2020
0009087886
 KO4DPV · Michael J Erpenbach · General
211 Golden Jubilee Rd, Gilbert, SC 29054
33.9623, -81.3548 (street) · Grid EM93hx · CQ 5 · ITU 8 · map ↗
1.W4PMR ✓ granted
3.W4PMA held
4.W4PMD held
 Granted
got W4PMR