N9TPB FCC License Search
🕒 FCC license data updated yesterday 7:15 am CDT (FCC files through Oct 27, 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)

K0MTZ HAM

Amateur Extra class licensed since 1985 (41 yrs) Sioux Falls, SD Grid EN13ol 29 repeaters within 50 mi
🔒 Not available — currently licensed, through Nov 21, 2034. If it isn't renewed, it opens for vanity requests Nov 22, 2036.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

Currently held by GERALD H JOHNSON · 1 holder on record

Current holder: GERALD H JOHNSON

Held K0MTZ Jan 25, 1985 → present · first licensed Jan 25, 1985 as K0MTZ · 1 license · FRN 0009830530
📖 In the printed callbooks since 1959 as K0MTZ, before the FCC's online records

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.
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
K0MTZ in the Printed Callbooks, 1909–1997
From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for K0MTZ in the last 24 hours. They show up here within seconds of K0MTZ beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 Miles

29 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 KC0RFR Sioux Falls
KC0RFR
 443.5000 +5 TONE 88.5 FM (analog) (FM,C4FM) — Sioux Falls, SD
3.8 W0ZML Sioux Falls
W0ZML AllStar
 443.3000 +5 TONE 146.2 FM (analog) (DMR,FM) AllStar 631740 BrandMeister 314644 — Sioux Falls, SD
3.9 KD0ZP Sioux Falls Menl
KD0ZP
 444.8250 +5 TONE 103.5 FM (analog) — Sioux Falls, SD
3.9 W0FSD Sioux Falls Menl
W0FSD
 223.8600 -1.6 TONE 146.2 FM (analog) — Sioux Falls, SD
4.5 N4OGL Sioux Falls
N4OGL BM
 446.5000 -5 CC1 DMR BrandMeister 310677001 — Sioux Falls, SD
4.5 WD0EXR Sioux Falls
WD0EXR BM
 443.4000 +5 CC1 DMR BrandMeister 310165 — Sioux Falls, SD
4.5 N0RCY Sioux Falls SD
N0RCY BM
 429.0000 -1 CC1 DMR BrandMeister 3193241 — Sioux Falls, SD, L0C, SD
4.9 K0LTN Harrisburg McFar
K0LTN
 442.4000 +5 TONE 225.7 FM (analog) — Harrisburg, SD
5.6 KE0WPC Sioux Falls
KE0WPC AllStar
 443.8000 +5 DCS 174 FM (analog) AllStar 632880 — Sioux Falls, SD
5.6 KD0ZP Sioux Falls
KD0ZP EchoLink
 444.9000 +5 TONE 146.2 FM (analog) EchoLink 74079 — Sioux Falls, SD
5.9 W0ZWY Sioux Falls
W0ZWY
 146.8950 -0.6 TONE 146.2 FM (analog) — Sioux Falls, SD
5.9 W0ZWY Sioux Falls
W0ZWY
 442.7500 +5 none D-STAR — Sioux Falls, SD
23.0 W0ZML Moe
W0ZML
 443.4000 +5 TSQL 146.2 FM (analog) — Moe, SD
23.1 N0JPE Fairview
N0JPE IRLP
 146.5600 simplex TONE 67.0 FM (analog) IRLP 7449 IRLP 7375 — Fairview, SD
27.8 KA0VHV Beresford
KA0VHV
 147.2400 +0.6 TONE 141.3 FM (analog) — Beresford, SD
31.3 KD0MC Luverne
KD0MC
 147.1050 +0.6 TSQL 141.3 FM (analog) — Luverne, MN
34.1 W0SD Turkey Ridge
W0SD
 444.9750 +5 TONE 146.2 FM (analog) — Turkey Ridge, SD
34.5 W0SD Turkey Ridge
W0SD
 927.6000 -25 TONE 100.0 FM (analog) — Turkey Ridge, SD
35.8 W0SD Salem
W0SD IRLP
 145.5100 simplex TONE 146.2 FM (analog) IRLP 7748 — Salem, SD
35.8 W0SD Salem
W0SD
 442.0750 +5 TONE 103.5 FM (analog) — Salem, SD
38.0 W0VHQ Rock Valley Perk
W0VHQ
 147.3000 +0.6 TSQL 110.9 FM (analog) (C4FM,FM) — Rock Valley, IA
39.8 WG0F Madison
WG0F
 442.7500 +5 none D-STAR — Madison, SD
41.3 KB0WSV Colman
KB0WSV
 443.2250 +5 TONE 146.2 FM (analog) — Colman, SD
42.4 W0DRK Pipestone
W0DRK
 147.0750 +0.6 TONE 141.3 FM (analog) — Pipestone, MN
49.0 N0DCA South Sioux City
N0DCA
 145.3250 -0.6 TSQL 110.9 FM (analog) — South Sioux City, NE
4.0 W0ZWY Offline Sioux Falls
W0ZWY
 444.2000 +5 TSQL 82.5 FM (analog) (FM,C4FM) — Sioux Falls, SD
39.9 KB0MRG Offline Madison
KB0MRG
 440.1750 +5 TONE 131.8 FM (analog) — Madison, SD
40.1 K0TGA Offline Flandreau
K0TGA
 146.9850 -0.6 TONE 146.2 FM (analog) — Flandreau, SD
48.6 W0OJY Offline Vermillion Cemen
W0OJY
 147.3750 +0.6 TONE 146.2 FM (analog) — Vermillion, SD