N9TPB FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 5, 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

W6SFK HAM

Amateur Extra class licensed since 2010 (16 yrs) W6SFK since 2012 · previously K6SFK, KJ6JVP Geyserville, CA grid CM88lr LoTW user 121 repeaters within 50 mi
🔒 Not available — currently licensed, through Feb 4, 2032. If it isn't renewed, it opens for vanity requests Feb 5, 2034.

📬 QSL: LoTW user · last upload Mar 26, 2020 · not eQSL AG · QRZ · HamQTH

📝 W6SFK has filed vanity applications before — latest filed Jan 17, 2012 · what was requested

Currently held by Steve F Koster · 1 holder on record

Current holder: Steve F Koster

Held W6SFK Feb 4, 2012 → present · first licensed Jul 22, 2010 as KJ6JVP · 3 licenses · FRN 0020061214

Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Vanity applications filed by W6SFK

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 Jan 17, 2012
Granted Nov 16, 2021
0005030928
 K6SFK · Steve F Koster · General
Attn: Steve Koster · PO Box 990 · Geyserville, CA 95441
38.7216, -123.0473 (ZIP center) · Grid CM88lr · CQ 3 · ITU 6 · map ↗
1.W6SFK ✓ granted
 Granted
got W6SFK
Filed Jul 26, 2010
Granted Aug 13, 2010
0004334865
 KJ6JVP · Stephen F Koster · Technician
Attn: Stephen F Koster · PO Box 990 · Geyserville, CA 95441
38.7216, -123.0473 (ZIP center) · Grid CM88lr · CQ 3 · ITU 6 · map ↗
1.K6SFK ✓ granted
2.W6SFK ✓ granted
 Granted
got K6SFK

Others requesting W6SFK

2 applications listed W6SFK as a choice, newest first.

FiledAwardApplicantChoice #Status
Jan 17, 2012 Feb 4, 2012 K6SFK · Steve F Koster · Geyserville, CA 1Granted
Jul 26, 2010 Aug 13, 2010 KJ6JVP · Stephen F Koster · Geyserville, CA 2Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for W6SFK in the last 24 hours. They show up here within seconds of W6SFK beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 miles

121 repeaters within 50 miles of this ZIP code, 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 · center is the ZIP code (approximate) · 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
5.4 KG6NLW Cloverdale
KG6NLW BM
 440.1000 +5 CC1 DMR BrandMeister 110651 BrandMeister 314677 — Cloverdale, CA
6.0 KI6B Cloverdale
KI6B
 146.9700 -0.6 TONE 103.5 FM (analog) — Cloverdale, CA
6.0 WB6QAZ Cloverdale
WB6QAZ IRLP
 449.7000 -5 TONE 88.5 FM (analog) IRLP 3183 — Cloverdale, CA
7.8 KD6POC Geyserville
KD6POC C-Bridge
 440.5000 +5 CC6 DMR C-Bridge 🗓 1 net 1 net · 8 check-ins · 7 stations Geyserville, CA
11.5 AA6RH Geyserville
AA6RH BM
 440.2750 +5 CC1 DMR BrandMeister 312224 — Geyserville, CA
12.4 NN6J Healdsburg
NN6J
 224.3600 -1.6 TONE 88.5 FM (analog) — Healdsburg, CA
13.2 K6ACS Cazadero
K6ACS
 147.9750 -0.6 TONE 88.5 FM (analog) — Cazadero, CA
13.2 K6CHG Cazadero
K6CHG WIRES-X
 444.0000 +5 TONE 88.5 FM (analog) (C4FM,FM) WIRES-X 21166 — Cazadero, CA
13.2 K6CHG Cazadero
K6CHG
 145.0000 -0.6 TONE 88.5 FM (analog) — Cazadero, CA
13.5 K6CDF Guerneville Mt
K6CDF
 145.1900 -0.6 TONE 88.5 FM (analog) — Guerneville, CA
17.4 W6IBC Oakmont
W6IBC
 146.9850 -0.6 TONE 88.5 FM (analog) — Oakmont, CA
17.6 NN6J Hopland
NN6J
 440.1375 +5 none FM (analog) — Hopland, CA
17.6 WA6RQX Hopland
WA6RQX
 145.4700 -0.6 TONE 103.5 FM (analog) — Hopland, CA
17.8 K6CHG Timber Cove
K6CHG
 444.0375 +5 none FM (analog) — Timber Cove, CA
19.1 W6ABR Jenner
W6ABR
 146.6200 -0.6 TONE 88.5 FM (analog) — Jenner, CA
20.7 KI6QCU Seigler
KI6QCU AllStar
 145.1500 -0.6 TSQL 103.5 FM (analog) AllStar 540341 — Seigler, CA
21.0 KG6UFR Kelseyville
KG6UFR
 441.3500 +5 TONE 100.0 FM (analog) — Kelseyville, CA
21.0 N6GJM Kelseyville
N6GJM
 441.4250 +5 TONE 100.0 FM (analog) — Kelseyville, CA
21.9 W6ABR Sea Ranch
W6ABR
 147.9450 -0.6 TONE 88.5 FM (analog) — Sea Ranch, CA
22.7 W6CO Napa Mt St
W6CO EchoLink
 147.1800 +0.6 TONE 151.4 FM (analog) EchoLink 70359 — Napa, CA
22.7 W6CO Napa Mt St
W6CO
 441.9000 +5 TONE 151.4 FM (analog) — Napa, CA
22.7 K6ZRX Napa Mt St
K6ZRX
 927.5250 -25 TONE 173.8 FM (analog) — Napa, CA
23.1 N1PPP Kelseyville Mt
N1PPP
 146.7750 -0.6 TONE 103.5 FM (analog) — Kelseyville, CA
23.4 WA6JQV Middletown
WA6JQV
 927.9375 -25 none FM (analog) — Middletown, CA
23.4 WA6JQV Middletown
WA6JQV
 927.4875 -25 none FM (analog) — Middletown, CA
23.4 K6ACS Santa Rosa
K6ACS BM
 442.1125 +5 CC1 DMR BrandMeister 310629 — Santa Rosa, CA
23.4 AC6VJ Middletown
AC6VJ
 145.3900 -0.6 TONE 88.5 FM (analog) — Middletown, CA
23.4 AC6VJ Middletown
AC6VJ
 29.6400 -0.1 TONE 156.7 FM (analog) — Middletown, CA
23.4 AC6VJ Middletown
AC6VJ
 51.8400 -0.5 TONE 88.5 FM (analog) — Middletown, CA
24.4 WB7ABP Santa Rosa
WB7ABP
 443.8250 +5 TONE 100.0 FM (analog) — Santa Rosa, CA
24.6 K6CSR Santa Rosa Parke
K6CSR
 146.7900 -0.6 TSQL 88.5 FM (analog) (C4FM,FM) — Santa Rosa, CA
25.2 WA6FUL Sebastopol
WA6FUL
 440.9500 +5 TONE 123.0 FM (analog) — Sebastopol, CA
25.2 KC6SOT Sebastopol
KC6SOT BM
 444.9875 +5 CC1 DMR BrandMeister 310645 — Sebastopol, CA
25.2 KJ6FPJ Sebastopol
KJ6FPJ
 441.9500 +5 TONE 82.5 FM (analog) — Sebastopol, CA
25.4 N6AMG Sebastopol
N6AMG AllStar
 442.3250 simplex TONE 100.0 FM (analog) AllStar 53128 AllStar 531280 — Sebastopol, CA
25.9 N6PAW Sebastopol
N6PAW BM
 439.0000 -5 CC1 DMR BrandMeister 311974801 — Sebastopol, CA
26.2 K6JSI Santa Rosa Richm
K6JSI IRLP
 441.6500 +5 TONE 100.0 FM (analog) IRLP 3219 — Santa Rosa, CA
26.5 WB5QAL Clearlake Silver
WB5QAL AllStar
 442.8750 +5 TSQL 103.5 FM (analog) AllStar 540340 — Clearlake, CA
26.5 W6ABR Gualala
W6ABR
 147.8250 -0.6 TONE 103.5 FM (analog) — Gualala, CA
26.5 KE6WC Gualala
KE6WC
 443.9000 +5 TONE 103.5 FM (analog) — Gualala, CA
26.5 N6PHP Santa Rosa
N6PHP
 146.9400 -0.6 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 KV6A Santa Rosa
KV6A
 441.3000 +5 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 K6CSR Santa Rosa
K6CSR
 441.6500 +5 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 AA6RH Santa Rosa
AA6RH BM
 443.3875 +5 CC1 DMR BrandMeister 312225 — Santa Rosa, CA
26.5 AA6RH Santa Rosa
AA6RH BM
 441.0000 +5 CC1 DMR BrandMeister 312327 — Santa Rosa, CA
26.5 K6SON Santa Rosa
K6SON WIRES-X
 446.3750 -5 DG-ID 07 Fusion (C4FM) WIRES-X 70798 — Santa Rosa, CA
26.5 WA6YGD Santa Rosa
WA6YGD
 145.3500 -0.6 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 K6ACS Santa Rosa
K6ACS
 146.7300 -0.6 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 KE6EAQ Santa Rosa
KE6EAQ
 146.8350 -0.6 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 KE6N Santa Rosa
KE6N
 223.7600 -1.6 TONE 85.4 FM (analog) — Santa Rosa, CA
26.5 K6ACS Santa Rosa
K6ACS
 224.8200 -1.6 TONE 103.5 FM (analog) — Santa Rosa, CA
26.5 KD6RC Santa Rosa
KD6RC
 441.3000 +5 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 KD6RC Santa Rosa
KD6RC
 444.3750 +5 TSQL 107.2 FM (analog) — Santa Rosa, CA
26.5 KF6SZA Santa Rosa
KF6SZA
 444.9000 +5 TONE 88.5 FM (analog) — Santa Rosa, CA
26.6 K6EAR Santa Rosa
K6EAR
 440.4500 +5 TONE 88.5 FM (analog) — Santa Rosa, CA
26.6 WB6RUT Santa Rosa
WB6RUT
 444.3750 +5 TONE 82.5 FM (analog) — Santa Rosa, CA
26.8 WA6M Bodega Bay
WA6M
 146.6700 -0.6 TONE 88.5 FM (analog) — Bodega Bay, CA
26.8 K6CHG Bodega Bay
K6CHG
 440.3250 +5 none FM (analog) — Bodega Bay, CA
27.1 N6PMF Calistoga
N6PMF
 444.1500 +5 none FM (analog) — Calistoga, CA
27.1 K6IRC Calistoga
K6IRC
 444.4750 +5 none FM (analog) — Calistoga, CA
27.1 WZ6X Calistoga
WZ6X
 1283.9000 -12 TONE 88.5 FM (analog) — Calistoga, CA
27.5 KJ6QBM
Listed as KJ6QBM NORCAL
 Bodega Bay
KJ6QBM BM
 440.3250 +5 CC1 DMR BrandMeister 310732 — Bodega Bay, CA
27.7 W6SON Sebastopol Engli
W6SON IRLP
 147.3150 +0.6 TONE 88.5 FM (analog) IRLP 7103 — Sebastopol, CA
27.7 W6SON Sebastopol Engli
W6SON
 224.4800 -1.6 TONE 88.5 FM (analog) — Sebastopol, CA
27.9 W6SON Sebastopol Engli
W6SON BM
 443.1000 +5 CC1 DMR BrandMeister 311176 — Sebastopol, CA
27.9 N0EDS Clear Lake
N0EDS
 51.9600 -0.5 TONE 114.8 FM (analog) — Clear Lake, CA
28.2 KF7KOL Santa Rosa
KF7KOL BM
 434.4500 +5 CC1 DMR BrandMeister 320263801 — Santa Rosa, CA
28.5 W6SON Santa Rosa Castl
W6SON WIRES-X
 441.3750 +5 TONE 88.5 FM (analog) (C4FM,FM) WIRES-X 80798 — Santa Rosa, CA
29.1 WA6RQX Anchor Bay
WA6RQX
 147.2700 +0.6 TONE 114.8 FM (analog) — Anchor Bay, CA
30.8 AC6ET Ukiah
AC6ET
 146.9550 -0.6 TONE 88.5 FM (analog) — Ukiah, CA
30.8 WA6RQX Ukiah
WA6RQX
 440.8500 +5 TONE 141.3 FM (analog) — Ukiah, CA
30.8 WA6RQX Ukiah
WA6RQX
 444.0750 +5 TONE 141.3 FM (analog) — Ukiah, CA
30.8 WA6RQX Ukiah
WA6RQX
 444.7750 +5 TONE 141.3 FM (analog) — Ukiah, CA
30.8 WA6RQX Ukiah
WA6RQX
 440.0250 +5 TONE 141.3 FM (analog) — Ukiah, CA
31.8 KJ6IFS Upper Lake
KJ6IFS
 444.0250 +5 TSQL 103.5 FM (analog) (FM,C4FM) — Upper Lake, CA
32.3 KB6ZOP Rohnert Park Civ
KB6ZOP AllStar
 444.6250 +5 TSQL 88.5 FM (analog) AllStar 59168 EchoLink 220500 IRLP 3621 — Rohnert Park, CA
32.4 WD6FTB Rohnert Park
WD6FTB EchoLink
 223.9000 -1.6 TONE 88.5 FM (analog) EchoLink 231950 — Rohnert Park, CA
32.9 KI6SUD Dillon Beach
KI6SUD
 146.8650 -0.6 TONE 88.5 FM (analog) — Dillon Beach, CA
33.2 K6LO Saint Helena Dee
K6LO SARGE
 440.1000 +5 none FM (analog) (DMR,FM) BrandMeister 110672 SARGE — Saint Helena, CA
33.7 K6LO Angwin
K6LO BM
 147.8550 -0.6 CC1 DMR BrandMeister 110682 BrandMeister 314497 — Angwin, CA
34.1 K6LO Saint Helena Fir
K6LO FreeDMR
 444.1750 +5 CC5 DMR BrandMeister FreeDMR — Saint Helena, CA
34.2 K6LO Angwin
K6LO FreeDMR
 440.0750 +5 TONE 151.4 FM (analog) (DMR,FM) BrandMeister 314494 BrandMeister 110666 FreeDMR — Angwin, CA
34.3 N1PPP Upper Lake Hunte
N1PPP
 147.6750 -0.6 TSQL 179.9 FM (analog) — Upper Lake, CA
37.0 W6ABR Point Arena
W6ABR
 146.6100 -0.6 TONE 88.5 FM (analog) — Point Arena, CA
40.4 NN6J Petaluma
NN6J
 444.0375 +5 none FM (analog) — Petaluma, CA
40.5 WB6TMS Petaluma
WB6TMS
 146.9100 -0.6 TSQL 88.5 FM (analog) 🗓 1 net 1 net Petaluma, CA
40.5 AC6ET Petaluma
AC6ET
 224.9600 -1.6 TONE 103.5 FM (analog) — Petaluma, CA
40.5 NI6B Petaluma
NI6B
 444.2250 +5 TONE 127.3 FM (analog) — Petaluma, CA
41.9 N6NMZ Vacaville Blue
N6NMZ
 52.8600 -0.5 TONE 114.8 FM (analog) — Vacaville, CA
43.2 N6TKW Yountville Mt
N6TKW
 444.7250 +5 TSQL 151.4 FM (analog) — Yountville, CA
43.5 KI6RIT Willits
KI6RIT AllStar
 147.1200 +0.6 TONE 103.5 FM (analog) AllStar 660180 — Willits, CA
43.6 W6PE Sonoma
W6PE
 440.0125 +5 none FM (analog) — Sonoma, CA
43.9 W6BYS Yountville
W6BYS AllStar
 440.0500 +5 TSQL 114.8 FM (analog) AllStar 511080 — Yountville, CA
44.1 KI6B Inverness
KI6B
 145.1700 -0.6 TONE 88.5 FM (analog) — Inverness, CA
44.6 N6LXX Blue Ridge
N6LXX
 927.2250 -25 TONE 123.0 FM (analog) — Blue Ridge, CA
44.6 WA6RQX Willits Laughlin
WA6RQX
 147.3900 +0.6 TONE 103.5 FM (analog) — Willits, CA
46.5 K6BER Woodland Berryes
K6BER
 146.9700 -0.6 TSQL 123.0 FM (analog) — Woodland, CA
46.9 WB6TMS Pt Reyes Stn
WB6TMS
 145.4700 -0.6 TONE 88.5 FM (analog) 🗓 1 net 1 net Pt Reyes Stn, CA
46.9 WB6TMS Pt Reyes Stn
WB6TMS
 444.5250 +5 TONE 107.2 FM (analog) 🗓 1 net 1 net Pt Reyes Stn, CA
47.3 KO6DOT Napa Lk
KO6DOT AllStar
 443.0000 +5 TONE 146.2 FM (analog) AllStar 64222 — Napa, CA
49.3 KE6ORI Nacasio
KE6ORI
 52.8800 -0.5 TONE 114.8 FM (analog) — Nacasio, CA
49.7 K6GWE Mill Valley
K6GWE
 147.3300 +0.6 TSQL 192.8 FM (analog) — Mill Valley, CA
49.7 N6GVI Novato
N6GVI
 440.2500 +5 TONE 107.2 FM (analog) — Novato, CA
49.9 KE6O Napa
KE6O BM
 442.4875 +5 CC2 DMR BrandMeister 310361 — Napa, CA
11.1 KM6XU offline Guerneville McCr
KM6XU
 51.8000 -0.5 TONE 114.8 FM (analog) — Guerneville, CA
13.2 K6CHG offline Cazadero
K6CHG
 440.1250 +5 none FM (analog) (DMR,FM) — Cazadero, CA
22.7 W6CO offline Napa Mt St
W6CO
 440.0500 +5 TONE 127.3 D-STAR — Napa, CA
23.0 KI6LUK offline Lakeport
KI6LUK IRLP
 439.4200 simplex TSQL 100.0 FM (analog) IRLP 7489 — Lakeport, CA
25.2 WA6FUL offline Sebastopol
WA6FUL IRLP
 440.4750 +5 TONE 97.4 FM (analog) IRLP 4215 — Sebastopol, CA
25.2 WA6FUL offline Sebastopol
WA6FUL
 443.4250 +5 TONE 88.5 FM (analog) — Sebastopol, CA
25.2 WA6TIP offline Sebastopol
WA6TIP BM
 444.8250 +5 TONE 131.8 FM (analog) (DMR,FM) BrandMeister 110693 — Sebastopol, CA
26.5 K6ACS offline Santa Rosa
K6ACS
 145.0400 -0.6 none FM (analog) (DV,FM) — Santa Rosa, CA
26.5 AC6VJ offline Santa Rosa
AC6VJ
 223.8000 -1.6 TONE 156.7 FM (analog) — Santa Rosa, CA
26.5 KD6CJQ offline Santa Rosa
KD6CJQ
 440.2000 +5 TONE 88.5 FM (analog) — Santa Rosa, CA
26.5 KD6RC offline Santa Rosa
KD6RC EchoLink
 444.7500 +5 TONE 82.5 FM (analog) EchoLink 164295 — Santa Rosa, CA
26.5 KC6REK offline Santa Rosa
KC6REK
 1283.2000 -12 TONE 88.5 FM (analog) — Santa Rosa, CA
26.7 KK6JAB offline Santa Rosa
KK6JAB IRLP
 444.9000 in 444.9050 TSQL 88.5 FM (analog) IRLP 3331 — Santa Rosa, CA
27.6 KI6YYW offline Lakeport
KI6YYW IRLP
 147.4300 simplex TSQL 127.3 FM (analog) IRLP 7035 — Lakeport, CA
33.0 WX6B offline Santa Rosa
WX6B IRLP
 223.9000 simplex TSQL 88.5 FM (analog) IRLP 3347 — Santa Rosa, CA
43.6 AA6GV offline Sonoma
AA6GV
 146.2050 +0.6 TONE 88.5 FM (analog) — Sonoma, CA
46.5 W6AJF offline Sonoma
W6AJF
 440.0125 +5 CC? DMR — Sonoma, CA