N9TPB FCC License Search
🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 16, 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)

KA0IMU HAM

Novice class licensed since 1987 (39 yrs) Houghton, MI Grid EN57rc 15 repeaters within 50 mi
🔒 Not available — currently licensed, through Jan 17, 2027. If it isn't renewed, it opens for vanity requests Jan 18, 2029.

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

Currently held by DAVID A OLSON · 1 holder on record

Current holder: DAVID A OLSON

Held KA0IMU Apr 7, 1987 → present · first licensed Apr 7, 1987 as KA0IMU · 1 license · FRN 0015670078
📖 In the printed callbooks since 1981 as KA0IMU, 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.
KA0IMU 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 KA0IMU in the last 24 hours. They show up here within seconds of KA0IMU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 Miles

15 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
0.2 W8YY Houghton Michiga
W8YY
 146.6000 -0.6 TONE 100.0 FM (analog) — Houghton, MI
0.3 W8YY Houghton Wadswor
W8YY HARC
 444.5000 +5 CC1 DMR HARC BrandMeister 314070 — Houghton, MI
0.4 W3TLP Houghton College
W3TLP
 447.1200 simplex TSQL 67.0 FM (analog) — Houghton, MI
0.8 N8WAV Houghton
N8WAV
 147.3900 +0.6 TONE 100.0 FM (analog) — Houghton, MI
0.9 N8WAV Houghton
N8WAV BM
 446.5500 +5 CC1 DMR BrandMeister 312475 — Houghton, MI
0.9 W8YY Houghton
W8YY BM
 446.5500 +5 CC1 DMR BrandMeister 312476 — Houghton, MI
0.9 N8WAV Houghton
N8WAV JSwift
 147.1200 +0.6 CC1 DMR JSwift — Houghton, MI
0.9 N8WAV Houghton
N8WAV MARC
 435.0000 +5 CC1 DMR DMR-MARC — Houghton, MI
7.9 W8CDZ Calumet
W8CDZ EchoLink
 146.8800 -0.6 TSQL 100.0 FM (analog) EchoLink 283375 — Calumet, MI
14.7 W8CDZ Donken
W8CDZ
 146.6700 -0.6 TONE 100.0 FM (analog) — Donken, MI
17.3 N8ZED Baraga
N8ZED
 147.3450 +0.6 TONE 100.0 FM (analog) (FM,C4FM) — Baraga, MI
23.8 W8UXG Winona
W8UXG
 146.7300 -0.6 TONE 100.0 FM (analog) — Winona, MI
24.9 W8YY Phoenix CA Force
W8YY HARC
 444.7500 +5 CC1 DMR HARC — Phoenix, MI
25.0 W8FWG Calumet Mt
W8FWG EchoLink
 147.3150 +0.6 TSQL 100.0 FM (analog) EchoLink 405654 — Calumet, MI
33.6 KE8CPN L'Anse
KE8CPN
 147.3750 +0.6 TONE 100.0 FM (analog) — L'Anse, MI