N9TPB FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 8, 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)

KD0S HAM

Amateur Extra class licensed since 1992 (34 yrs) KD0S since 2000 · previously KF0FN Pierre, SD Grid DN94vk LoTW user eQSL AG On APRS 13 min ago 6 repeaters within 50 mi
🔒 Not available — currently licensed, through Apr 29, 2030. If it isn't renewed, it opens for vanity requests Apr 30, 2032.

📬 QSL: LoTW user · last upload Sep 20, 2026 · eQSL AG member · QRZ · HamQTH

📝 KD0S has filed vanity applications before — latest filed Feb 28, 2000 · what was requested

Currently held by JAMES D ZAHRADNICEK · 1 holder on record

Current holder: JAMES D ZAHRADNICEK

Held KD0S Mar 17, 2000 → present · first licensed Jul 7, 1992 as KF0FN · 2 licenses · FRN 0002234409
📖 In the printed callbooks since 1991 as KA8YZF, 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.

Earlier Holders

KD0S in the 1993–2003 Callbooks
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.

Vanity Applications Filed by KD0S

Calls this licensee has asked the FCC for, newest first, in their order of preference. The FCC processes applications 18 days after filing; "likely award" is our estimate from every pending application in filing order.

Filed · AwardApplicantRequested (in order)Status
Filed Feb 28, 2000
Granted Apr 29, 2020
0000089375
 KF0FN · JAMES D ZAHRADNICEK · Amateur Extra
20310 REDWOOD PL, PIERRE, SD 57501
44.5276, -100.3091 (ZIP center) · Grid DN94um · CQ 4 · ITU 7 · map ↗
1.KD0S ✓ Granted
 Granted
got KD0S

Others Requesting KD0S

3 applications listed KD0S as a choice, newest first.

FiledAwardApplicantChoice #KD0SResult
Mar 19, 2020 Apr 6, 2020 KD2TQU · Julio Cesar de Almeida Maia · New York, NY 1Dismissed Application dismissed
May 11, 2012 May 29, 2012 KC0MTV · Paul N Byrd · FREDERICKTOWN, MO 7Dismissed Application dismissed
Feb 28, 2000 Mar 17, 2000 KF0FN · JAMES D ZAHRADNICEK · PIERRE, SD 1Granted Granted this call

📡 On the Air: APRS, Digital & WSPR Spots

📍 APRS

KD0S-1 · 13 min ago
43.9723, -101.7027 · W3,SDn-N PHILIP,SD 147.375 146.2 tone 3
Full history on aprs.fi →

Repeaters within 50 Miles

6 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)
MilesCallNameOutputOffsetToneModeNetworksActivityLocation
0.3 KD0S Offline Pierre
KD0S IRLP
 146.5650 simplex TONE 146.2 FM (analog) IRLP 3266 — Pierre, SD
5.7 KD0S Pierre
KD0S
 146.7300 -0.6 TONE 146.2 FM (analog) — Pierre, SD
6.8 W0PIR Pierre
W0PIR
 145.3500 -0.6 TONE 146.2 FM (analog) — Pierre, SD
6.8 KD0S Offline Pierre
KD0S IRLP
 146.5400 simplex TSQL 146.2 FM (analog) IRLP 3268 — Pierre, SD
43.9 AA0CT Murdo
AA0CT
 147.3000 +0.6 TONE 146.2 FM (analog) — Murdo, SD
49.0 N0NPO Reliance
N0NPO
 146.9400 -0.6 TONE 146.2 FM (analog) — Reliance, SD