N9TPB
FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 5, 2026) · next update today 8:30 am CDT
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HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WICarl D Knapp
FRN 0024666299 · first licensed Jun 9, 2015 as KL4CX · 1 license on record
📝 FCC applications (9)
| Received | File number | Service | Purpose | Status | Call |
|---|---|---|---|---|---|
| Jun 29, 2026 | 0012094568 | HAM | Administrative update | Granted | KL4CX |
| Feb 26, 2026 | 0011923229 | HAM | Administrative update | Granted | KL4CX |
| Apr 3, 2025 | 0011512448 | HAM | Renewal | Granted | KL4CX |
| Dec 13, 2019 | 0008913150 | HAM | Administrative update | Granted | KL4CX |
| Aug 7, 2018 | 0008308365 | HAM | Administrative update | Granted | KL4CX |
| Apr 20, 2017 | 0007746295 | HAM | Administrative update | Granted | KL4CX |
| Jun 16, 2016 | 0007306537 | HAM | Modification | Granted | KL4CX |
| Oct 13, 2015 | 0006983935 | HAM | Administrative update | Granted | KL4CX |
| Jun 9, 2015 | 0006834248 | HAM | New license | Granted | KL4CX |
Complete licensing history
-
- Licensee
- Carl D Knapp
- Address
- 301 Mendenhall St
Summerville, SC 29483
- FRN
- 0024666299
- Last granted
- Apr 11, 2025
- Effective
- Jun 30, 2026
- Last action
- Jun 30, 2026
FCC actions (10)
- Jun 30, 2026 — Administrative update LIAUA
- Feb 27, 2026 — Administrative update LIAUA
- Apr 11, 2025 — License renewed LIREN
- Dec 14, 2019 — Administrative update LIAUA
- Aug 8, 2018 — Administrative update LIAUA
- Apr 21, 2017 — Administrative update LIAUA
- Jun 16, 2016 — License modified LIMOD
- Oct 14, 2015 — Administrative update LIAUA
- Jun 9, 2015 — License issued LIISS
- Jun 9, 2015 — Systematic call sign granted SYSGRT
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
- Seen Sep 27, 2026 → Oct 4, 2026 · 2 snapshots · as KL4CX
Carl D Knapp
301 Mendenhall St, Summerville, SC 29483 - Seen Apr 16, 2022 → Sep 25, 2025 · 11 snapshots · as KL4CX
Carl D Knapp
8095 Brookville Way, Avon, IN 46123 - Seen Sep 3, 2018 → May 6, 2019 · 3 snapshots · as KL4CX
Carl D Knapp
7619 Gold Coin Dr, Avon, IN 46123 - Seen May 12, 2017 → May 7, 2018 · 5 snapshots · as KL4CX
Carl D Knapp
10531 Chatanika Loop, Eagle River, AK 99577 - Seen Nov 16, 2015 → Feb 15, 2017 · 10 snapshots · as KL4CX
Carl D Knapp
12229 Winter Park Pl, Eagle River, AK 99577 - Seen Aug 2, 2015 → Sep 18, 2015 · 2 snapshots · as KL4CX
Carl D Knapp
6810 Gold Kings Cir Unit C, Anchorage, AK 99504
Repeaters within 50 miles
59 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)
| Miles | Call | Name | Output | Offset | Tone | Mode | Networks | Activity | Location |
|---|---|---|---|---|---|---|---|---|---|
| 1.8 | KC4ED | Summerville KC4ED |
442.3000 | +5 | none | FM (analog) | — | Summerville, SC | |
| 2.4 | KX4DOR | Summerville KX4DOR |
145.2800 | -0.6 | none | D-STAR | — | Summerville, SC | |
| 2.4 | KX4DOR | Summerville KX4DOR |
442.8375 | +5 | none | D-STAR | — | Summerville, SC | |
| 2.7 | WX3C Listed as WX3C VHF |
SUMMERVILLE WX3C BM |
147.2500 | +0.6 | CC7 | DMR | BrandMeister 312093 | — | SUMMERVILLE, SC |
| 2.7 | WX3C Listed as WX3C UHF |
SUMMERVILLE WX3C BM |
443.3700 | +5 | CC7 | DMR | BrandMeister 311239 | — | SUMMERVILLE, SC |
| 2.7 | WX3C | Boynton Beach WX3C BM |
902.9875 | +25 | CC7 | DMR | BrandMeister 312098 | — | Boynton Beach, FL |
| 3.6 | N2OBS | Ladson N2OBS EchoLink |
443.7750 | +5 | TSQL 123.0 | FM (analog) | EchoLink 99729 | — | Ladson, SC |
| 4.3 | W4HRS | Summerville Med W4HRS |
146.9850 | -0.6 | TONE 123.0 | FM (analog) | — | Summerville, SC | |
| 5.6 | W4HRS | Nort Trident Hos W4HRS |
146.7300 | -0.6 | TONE 123.0 | FM (analog) | — | North Charleston, SC | |
| 6.5 | WA4NMW | Knightsville WA4NMW |
147.2250 | +0.6 | TSQL 123.0 | FM (analog) | — | Knightsville, SC | |
| 7.5 | WA4USN | Knightsville WA4USN |
146.9400 | -0.6 | TSQL 123.0 | FM (analog) | — | Knightsville, SC | |
| 7.5 | WA4USN | Mount Pleasant WA4USN |
441.4500 | +5 | TSQL 123.0 | FM (analog) | — | Mount Pleasant, SC | |
| 10.3 | KX4DOR | Ridgeville KX4DOR |
443.8000 | +5 | CC1 | DMR | — | Ridgeville, SC | |
| 11.2 | NE2S | Hanahan NE2S BM |
439.5000 | -5 | CC1 | DMR | BrandMeister 316694501 | — | Hanahan, SC |
| 13.5 | N9HQC | Ravenel N9HQC BM |
443.9000 | +5 | TONE 123.0 | FM (analog) (DMR,FM) | BrandMeister 314755 | — | Ravenel, SC |
| 14.0 | W4BRK | Moncks Corner W4BRK |
146.6100 | -0.6 | TSQL 123.0 | FM (analog) | — | Moncks Corner, SC | |
| 14.2 | W4HNK | Dorchester W4HNK |
147.1800 | +0.6 | TONE 123.0 | FM (analog) | — | Dorchester, SC | |
| 14.2 | W4HNK | Dorchester W4HNK |
443.8000 | +5 | TONE 123.0 | FM (analog) | — | Dorchester, SC | |
| 14.3 | W4HRS | Moncks Corne EOC W4HRS |
145.4900 | -0.6 | TONE 103.5 | FM (analog) | — | Moncks Corner, SC | |
| 14.6 | W4ANK | Jedburg W4ANK |
147.2700 | +0.6 | TONE 123.0 | FM (analog) | — | Jedburg, SC | |
| 15.1 | KK4B | Cordesville KK4B |
145.3500 | -0.6 | TSQL 162.2 | FM (analog) | 🗓 2 nets | 2 nets · 35 check-ins · 24 stations | Cordesville, SC |
| 16.3 | W4HRS | Charleston W4HRS |
444.7750 | +5 | TONE 123.0 | FM (analog) | — | Charleston, SC | |
| 17.1 | W4HRS | Charleston W4HRS |
145.1600 | -0.6 | none | D-STAR | — | Charleston, SC | |
| 17.1 | W4HRS | Charleston W4HRS |
444.1125 | +5 | none | D-STAR | — | Charleston, SC | |
| 17.1 | WR4SC | Charleston WR4SC |
147.1050 | +0.6 | TSQL 123.0 | FM (analog) | 🗓 2 nets | 2 nets · 207 check-ins · 97 stations | Charleston, SC |
| 17.1 | WR4SC | Florence WR4SC |
441.5750 | +5 | TSQL 91.5 | FM (analog) | 🗓 2 nets | 2 nets · 207 check-ins · 97 stations | Florence, SC |
| 17.1 | WR4SC | Charleston WR4SC NC-PRN |
443.0375 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 207 check-ins · 97 stations | Charleston, SC |
| 17.3 | K4IUG | Charleston K4IUG |
224.6600 | -1.6 | TSQL 210.7 | FM (analog) | — | Charleston, SC | |
| 17.4 | K4IUG | West Ashley FS 1 K4IUG |
443.3750 | +5 | TSQL 100.0 | FM (analog) | — | West Ashley, SC | |
| 20.5 | W4HRS | Charleston MUSC W4HRS IRLP |
145.4500 | -0.6 | TONE 123.0 | FM (analog) | IRLP 4557 | — | Charleston, SC |
| 20.5 | W4HRS | Charleston MUSC W4HRS |
444.8250 | +5 | TONE 123.0 | FM (analog) | — | Charleston, SC | |
| 21.4 | WA4USN | Charleston USS WA4USN |
146.7900 | -0.6 | TONE 123.0 | FM (analog) | — | Charleston, SC | |
| 22.9 | K4IUG | Mt Pleasant K4IUG NONE-USE-C |
443.4500 | +5 | TSQL 100.0 | FM (analog) (DMR,FM) | NONE-USE-CONTACT99 | — | Mt Pleasant, SC |
| 23.4 | K4IUG | Adams Run K4IUG |
147.3450 | +0.6 | TSQL 141.3 | FM (analog) | — | Adams Run, SC | |
| 26.7 | KA4GDW | Saint George M&M KA4GDW |
147.0450 | +0.6 | TSQL 103.5 | FM (analog) | — | Saint George, SC | |
| 26.9 | WR4SC | Charleston WR4SC |
146.7600 | -0.6 | TSQL 123.0 | FM (analog) | 🗓 2 nets | 2 nets · 207 check-ins · 97 stations | Charleston, SC |
| 26.9 | WR4SC | Charleston WR4SC NC-PRN |
442.4625 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 207 check-ins · 97 stations | Charleston, SC |
| 26.9 | KR4CHS | Awendaw KR4CHS |
145.1200 | -0.6 | none | D-STAR | 🗓 1 net | 1 net | Awendaw, SC |
| 27.1 | WR4SC | Saint George WR4SC NC-PRN |
440.6500 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 207 check-ins · 97 stations | Saint George, SC |
| 27.7 | KK4B | Russellville KK4B |
147.3000 | +0.6 | TSQL 162.2 | FM (analog) | 🗓 2 nets | 2 nets · 35 check-ins · 24 stations | Russellville, SC |
| 30.9 | WA4USN | Seabrook Island WA4USN |
145.4100 | -0.6 | TONE 123.0 | FM (analog) | — | Seabrook Island, SC | |
| 31.3 | KG4BZN | Walterboro KG4BZN |
147.1350 | +0.6 | none | FM (analog) | — | Walterboro, SC | |
| 31.3 | KG4BZN | Walterboro KG4BZN |
444.5500 | +5 | TONE 123.0 | FM (analog) | — | Walterboro, SC | |
| 31.5 | W4HRS | Walterboro Colle W4HRS |
444.8500 | +5 | TONE 123.0 | FM (analog) | — | Walterboro, SC | |
| 32.3 | KJ4QLH | Vance KJ4QLH |
146.8050 | -0.6 | TSQL 156.7 | FM (analog) | — | Vance, SC | |
| 34.9 | N7GZT | Vance N7GZT AllStar |
442.2000 | +5 | DCS 023 | FM (analog) | AllStar 637122 AllStar 637121 | — | Vance, SC |
| 36.3 | W4APE | Greeleyville W4APE |
444.7500 | +5 | TSQL 123.0 | FM (analog) | — | Greeleyville, SC | |
| 37.9 | WA4SJS | White Hall WA4SJS |
146.9100 | -0.6 | TONE 156.7 | FM (analog) | — | White Hall, SC | |
| 37.9 | WR4SC | White Hall WR4SC NC-PRN |
442.3875 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 207 check-ins · 97 stations | White Hall, SC |
| 38.3 | KA4GDW | Bowman KA4GDW |
146.8350 | -0.6 | TSQL 179.9 | FM (analog) | — | Bowman, SC | |
| 38.7 | KA4GDW | Bowman KA4GDW |
224.7800 | -1.6 | TSQL 179.9 | FM (analog) | — | Bowman, SC | |
| 39.3 | W4APE | Greeleyville W4APE EchoLink |
145.2300 | -0.6 | TONE 123.0 | FM (analog) | EchoLink 779467 | — | Greeleyville, SC |
| 39.7 | K4LMD | Branchville K4LMD |
145.2100 | -0.6 | TSQL 100.0 | FM (analog) | — | Branchville, SC | |
| 45.7 | KM4ABW | Manning Hosp KM4ABW |
145.1500 | -0.6 | TSQL 91.5 | FM (analog) | — | Manning, SC | |
| 49.0 | N0VQE | Beaufort SC N0VQE BM |
441.5000 | +5 | CC1 | DMR | BrandMeister 311042910 | — | Beaufort, SC 29907, SC |
| 3.6 | N2OBS offline | Ladson N2OBS EchoLink |
146.8650 | -0.6 | TONE 123.0 | FM (analog) | EchoLink 99729 | — | Ladson, SC |
| 22.9 | KK4ZBE offline | Mt Pleasant E KK4ZBE |
146.6850 | -0.6 | TSQL 162.2 | FM (analog) | — | Mt Pleasant, SC | |
| 37.8 | KJ4LNJ offline | Green Pond White KJ4LNJ |
444.0750 | +5 | none | D-STAR | — | Green Pond, SC | |
| 37.9 | KJ4LNJ offline | Green Pond S.C KJ4LNJ |
145.4800 | -0.6 | none | D-STAR | — | Green Pond, SC |