N9TPB
FCC License Search
🕒 FCC license data updated yesterday 7:15 am CDT (FCC files through Oct 12, 2026) · next update today 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)AI4PX HAM
Amateur Extra class
licensed since 1992 (34 yrs)
AI4PX since 2006 · previously KD4RDB
Dalzell, SC
Grid EM94td
69 repeaters within 50 mi
🔒 Not available — currently licensed, through Jul 21, 2032. If it isn't renewed, it opens for vanity requests Jul 22, 2034.
📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH
Currently held by JAMES W JOHNSTON III · 1 holder on record
Current holder: JAMES W JOHNSTON III
Held AI4PX May 26, 2006 → present · first licensed Jul 21, 1992 as KD4RDB · 2 licenses · FRN 0004423133
-
📦 Moved: Sunter, SC → Dalzell, SC
- Licensee
- JAMES W JOHNSTON III
- Address
- 610 Light Wood Knot
DALZELL, SC 29040
- FRN
- 0004423133
- Previous call
- KD4RDB (Technician)
- Last granted
- May 6, 2022
- Effective
- May 6, 2022
- Last action
- May 6, 2022
FCC actions (5)
- May 6, 2022 — License renewed LIREN
- Jun 13, 2012 — License renewed LIREN
- Aug 25, 2009 — Administrative update LIAUA
- May 26, 2006 — Systematic call sign granted SYSGRT
- May 26, 2006 — License issued LIISS
-
- Licensee
- James W Johnston III
- Address
- 828 S Wise
Sunter, SC 29150
- FRN
- 0004423133
- Last granted
- Apr 25, 2002
- Effective
- Apr 25, 2002
- Last action
- May 26, 2006
FCC actions (3)
- May 26, 2006 — License canceled LICAN
- Apr 25, 2002 — License renewed LIREN
- Apr 3, 2001 — Administrative update LIAUA
Callbook Records, 1993–2003
From the FCC amateur database as published on the QRZ! callsign CD-ROMs, 1993–2003, before and alongside the FCC's online records (which start in 1999). "Seen" dates are the first and last disc showing that record; the issue date is the FCC's, so it can be a renewal of an even older license.
- Seen Nov 11, 1998 → Apr 7, 1999 · 2 discs
KD4RDB · Technician Plus · issued Nov 3, 1998, expires Jul 21, 2002
JAMES W . JOHNSTON III .
RT 4 BOX 328, BLOOMINGDALE, GA 31302 - Seen Mar 9, 1998 · 1 disc
KD4RDB · Technician Plus · issued Jan 13, 1998, expires Jul 21, 2002
JAMES W JOHNSTON III .
10 N COASTAL HWY, PORT WENTWORTH, GA 31407 - Seen Oct 31, 1994 → Apr 4, 1997 · 6 discs
KD4RDB · Technician Plus · issued Jul 21, 1992, expires Jul 21, 2002
JAMES W JOHNSTON III
RT 1 BOX 332, HARRIMAN, TN 37748 - Seen Sep 9, 1993 → May 3, 1994 · 2 discs
KD4RDB · Technician · issued Jul 21, 1992, expires Jul 21, 2002
JAMES W JOHNSTON III
RT 1 BOX 332, HARRIMAN, TN 37748
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
- Seen May 27, 2010 → Oct 11, 2026 · 48 snapshots · as KD4RDB
James W Johnston III
828 S Wise, Sunter, SC 29150 - Seen Nov 7, 2004 → Oct 11, 2026 · 14 snapshots · as AI4PX
JAMES W JOHNSTON III
610 Light Wood Knot, DALZELL, SC 29040 - Seen May 27, 2010 → Apr 16, 2022 · 35 snapshots · as AI4PX
James W Johnston III
2890 Crest Haven, Dalzell, SC 29040
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for AI4PX in the last 24 hours. They show up here within seconds of AI4PX beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.
Repeaters within 50 Miles
69 repeaters within 50 miles of this address, most active 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 |
|---|---|---|---|---|---|---|---|---|---|
| 16.7 | W4FTK | Sumter W4FTK AllStar |
443.3000 | +5 | DCS 315 | FM (analog) | AllStar 40040 EchoLink 367365 🗓 2 nets | 2 nets · 643 check-ins · 265 stations | Sumter, SC |
| 21.9 | W4FTK | Wedgefield W4FTK AllStar |
147.0600 | +0.6 | DCS 315 | FM (analog) | AllStar 40040 EchoLink 367365 🗓 2 nets | 2 nets · 643 check-ins · 265 stations | Wedgefield, SC |
| 35.8 | W4FTK | Blythewood W4FTK AllStar |
443.6500 | +5 | DCS 315 | FM (analog) | AllStar 40040 EchoLink 367365 🗓 2 nets | 2 nets · 643 check-ins · 265 stations | Blythewood, SC |
| 40.0 | W4FTK | Columbia W4FTK AllStar |
442.8750 | +5 | DCS 315 | FM (analog) | AllStar 40040 EchoLink 367365 🗓 2 nets | 2 nets · 643 check-ins · 265 stations | Columbia, SC |
| 44.1 | W4FTK | Pageland W4FTK AllStar |
441.8250 | +5 | DCS 315 | FM (analog) | AllStar 40040 EchoLink 367365 🗓 2 nets | 2 nets · 643 check-ins · 265 stations | Pageland, SC |
| 14.9 | WR4SC | Sumter WR4SC |
147.0150 | +0.6 | TSQL 156.7 | FM (analog) | 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Sumter, SC |
| 18.3 | WR4SC | Sumter WR4SC NC-PRN |
442.3125 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Sumter, SC |
| 33.3 | WR4SC | Columbia WR4SC NC-PRN |
442.5125 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Columbia, SC |
| 33.3 | WR4SC | Columbia WR4SC |
441.7250 | +5 | TONE 91.5 | FM (analog) | 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Columbia, SC |
| 36.4 | WR4SC | Florence WR4SC |
146.6850 | -0.6 | TSQL 91.5 | FM (analog) | 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Florence, SC |
| 36.4 | WR4SC | Florence WR4SC NC-PRN |
442.1625 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Florence, SC |
| 38.9 | WR4SC | Lake City WR4SC NC-PRN |
440.6375 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Lake City, SC |
| 40.0 | WR4SC | Columbia Capital WR4SC NC-PRN |
440.6125 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Columbia, SC |
| 46.2 | WR4SC | Cheraw WR4SC NC-PRN |
440.5375 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Cheraw, SC |
| 49.1 | WR4SC | Orangeburg WR4SC |
146.8800 | -0.6 | TSQL 123.0 | FM (analog) | 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Orangeburg, SC |
| 49.1 | WR4SC | Orangeburg WR4SC NC-PRN |
440.5875 | +5 | CC1 | DMR | NC-PRN 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Orangeburg, SC |
| 49.1 | WR4SC | Orangeburg WR4SC |
441.7500 | +5 | TONE 123.0 | FM (analog) | 🗓 2 nets | 2 nets · 254 check-ins · 104 stations | Orangeburg, SC |
| 27.9 | W4CAE | Fort Jackson W4CAE |
146.7750 | -0.6 | TSQL 156.7 | FM (analog) | 🗓 3 nets | 3 nets · 113 check-ins · 46 stations | Fort Jackson, SC |
| 40.0 | W4CAE | Columbia W4CAE AllStar |
147.3300 | +0.6 | TSQL 156.7 | FM (analog) | AllStar 494460 🗓 3 nets | 3 nets · 113 check-ins · 46 stations | Columbia, SC |
| 10.8 | W4APE Offline | Lucknow W4APE EchoLink |
146.9250 | -0.6 | TONE 123.0 | FM (analog) | EchoLink 779467 | — | Lucknow, SC |
| 12.3 | W4GL | Wedgefield W4GL |
145.4300 | -0.6 | TSQL 156.7 | FM (analog) | — | Wedgefield, SC | |
| 13.7 | W4GL | Sumter W4GL |
441.9500 | +5 | none | D-STAR | — | Sumter, SC | |
| 14.9 | W4GL | Sumter Tuomey W4GL |
146.6400 | -0.6 | TONE 156.7 | FM (analog) | — | Sumter, SC | |
| 14.9 | W4GL | Sumter WRJA W4GL |
444.1500 | +5 | TSQL 123.0 | FM (analog) (FM,DV) | — | Sumter, SC | |
| 17.6 | no call listed | Florence AllStar |
29.6000 | simplex | CC0 | DMR | AllStar 29419 EchoLink 41809 AllStar 49643 | — | Florence, SC |
| 17.6 | KA3KDL | Hartsville KA3KDL AllStar |
146.6250 | -0.6 | TSQL 114.8 | FM (analog) | AllStar 29419 EchoLink 41809 | — | Hartsville, SC |
| 18.3 | W4GL | Sumter W4GL |
147.0150 | +0.6 | TSQL 156.7 | FM (analog) | — | Sumter, SC | |
| 19.8 | KI4RAX | Lugoff KI4RAX |
146.8200 | -0.6 | TSQL 91.5 | FM (analog) (FM,C4FM) | — | Lugoff, SC | |
| 19.8 | KI4RAX | Lugoff KI4RAX |
441.8000 | +5 | none | D-STAR (DV,DMR) | — | Lugoff, SC | |
| 20.5 | W4ULH | Hartsville Carol W4ULH |
442.3500 | +5 | TONE 162.2 | FM (analog) | — | Hartsville, SC | |
| 25.8 | KI4IVP | Elgin KI4IVP WIRES-X |
147.2400 | +0.6 | TSQL 103.5 | FM (analog) (FM,C4FM) | WIRES-X 18449 | — | Elgin, SC |
| 26.8 | KQ4MKW | Darlington S Ca KQ4MKW BM |
445.5125 | -5 | CC1 | DMR | BrandMeister 321045702 | — | Darlington, South Ca, SC |
| 27.0 | WD4KFD | Florence I-95/Rt WD4KFD |
442.5250 | +5 | TONE 210.7 | FM (analog) | — | Florence, SC | |
| 29.0 | KQ4MVG | Timmonsville KQ4MVG |
147.3150 | +0.6 | TSQL 77.0 | FM (analog) | — | Timmonsville, SC | |
| 31.7 | KB4RRC | Florence KB4RRC |
147.2550 | +0.6 | TSQL 162.2 | FM (analog) | — | Florence, SC | |
| 31.7 | KB4RRC | Darlington FDTC KB4RRC |
444.8000 | +5 | TSQL 91.5 | FM (analog) | — | Darlington, SC | |
| 31.9 | KJ4OEF | Darlington KJ4OEF |
444.6000 | +5 | TONE 162.2 | FM (analog) | — | Darlington, SC | |
| 32.0 | W4APE | Florence W4APE EchoLink |
147.1950 | +0.6 | TONE 123.0 | FM (analog) | EchoLink 779467 | — | Florence, SC |
| 32.1 | KM4ABW | Manning Hosp KM4ABW |
145.1500 | -0.6 | TSQL 91.5 | FM (analog) | — | Manning, SC | |
| 32.2 | KJ4BWK | Columbia KJ4BWK |
442.2000 | +5 | none | D-STAR | — | Columbia, SC | |
| 32.2 | KJ4BWK | Columbia KJ4BWK |
1282.2250 | +12 | none | D-STAR | — | Columbia, SC | |
| 32.3 | WX4ARC | Florence WX4ARC TGIF |
442.2875 | +5 | CC1 | DMR | TGIF | — | Florence, SC |
| 33.8 | KB4RRC | Florence City KB4RRC |
146.9700 | -0.6 | TONE 167.9 | FM (analog) | — | Florence, SC | |
| 34.3 | KJ4OEF | Florence MRM Ctr KJ4OEF |
444.8500 | +5 | TSQL 162.2 | FM (analog) | — | Florence, SC | |
| 34.4 | W4ULH | Florence MUSC W4ULH |
444.0000 | +5 | TONE 123.0 | FM (analog) | — | Florence, SC | |
| 36.4 | W4ULH | Florence WJPM W4ULH |
146.8500 | -0.6 | TSQL 123.0 | FM (analog) | — | Florence, SC | |
| 36.4 | W4APE | Florence W4APE EchoLink |
442.0500 | +5 | TONE 123.0 | FM (analog) | EchoLink 779467 | — | Florence, SC |
| 38.4 | N7GZT | Saint Hemlock rd N7GZT AllStar |
442.7750 | +5 | TSQL 156.7 | FM (analog) | AllStar 637120 | — | Saint Matthews, SC |
| 40.0 | K4HI | Columbia K4HI WIRES-X |
147.3600 | +0.6 | TSQL 100.0 | FM (analog) | WIRES-X 64927 | — | Columbia, SC |
| 40.0 | K9OH | Columbia K9OH AllStar |
444.8750 | +5 | TSQL 91.5 | FM (analog) | AllStar 417861 | — | Columbia, SC |
| 40.0 | N4EOY Offline | Columbia N4EOY |
224.9000 | -1.6 | none | FM (analog) | — | Columbia, SC | |
| 40.6 | AD4U | Saint Matthews AD4U |
146.6700 | -0.6 | TSQL 156.7 | FM (analog) | — | Saint Matthews, SC | |
| 40.6 | N7GZT | Saint Matthews N7GZT |
53.2100 | -1 | none | FM (analog) | — | Saint Matthews, SC | |
| 40.8 | KJ4BWK | Saint Matthews KJ4BWK |
145.4000 | -0.6 | none | D-STAR | — | Saint Matthews, SC | |
| 41.3 | W4EAE | Cayce W4EAE |
433.1000 | +5 | CC1 | DMR | — | Cayce, SC | |
| 41.3 | W4EAE | Cayce W4EAE |
443.1000 | +5 | none | D-STAR (DMR,DV) | — | Cayce, SC | |
| 42.4 | W4APE | Pageland W4APE EchoLink |
146.8950 | -0.6 | TONE 123.0 | FM (analog) | EchoLink 779467 | — | Pageland, SC |
| 42.4 | W4JMY Offline | Pageland W4JMY |
53.3700 | -1 | TONE 100.0 | FM (analog) | — | Pageland, SC | |
| 42.8 | W4EAE Offline | Cayce W4EAE IRLP |
147.5100 | simplex | TSQL 131.8 | FM (analog) | IRLP 8255 | — | Cayce, SC |
| 43.3 | W4DZF | Columbia St W4DZF |
145.2700 | -0.6 | DCS 632 | FM (analog) | — | Columbia, SC | |
| 43.7 | W4APE | Greeleyville W4APE EchoLink |
145.2300 | -0.6 | TONE 123.0 | FM (analog) | EchoLink 779467 | — | Greeleyville, SC |
| 44.4 | NE4SC Offline | Kingstree NE4SC |
145.3100 | -0.6 | TONE 123.0 | FM (analog) | — | Kingstree, SC | |
| 45.5 | KC4IRA | Lancaster Medica KC4IRA |
444.6250 | +5 | Fusion (C4FM) | — | Lancaster, SC | ||
| 46.5 | W4APE | Greeleyville W4APE |
444.7500 | +5 | TSQL 123.0 | FM (analog) | — | Greeleyville, SC | |
| 46.8 | W4PAX | Lancaster W4PAX |
146.7000 | -0.6 | TSQL 123.0 | FM (analog) | — | Lancaster, SC | |
| 46.8 | W4PAX | Lancaster W4PAX |
444.1000 | +5 | TONE 192.8 | FM (analog) | — | Lancaster, SC | |
| 48.7 | KJ4QLH | Vance KJ4QLH |
146.8050 | -0.6 | TSQL 156.7 | FM (analog) | — | Vance, SC | |
| 49.1 | KJ4QLH | Orangeburg /Calh KJ4QLH |
147.3900 | +0.6 | TSQL 156.7 | FM (analog) | — | Orangeburg, SC | |
| 49.2 | KG4GKY Offline | West Columbia KG4GKY IRLP |
446.8750 | simplex | TSQL 79.7 | FM (analog) | IRLP 4045 | — | West Columbia, SC |