🕒 FCC license data updated today 9:42 am CDT (FCC files through Sep 30, 2026) · next update tomorrow 9:15 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
KA4ROB
✅
Available for a vanity request — free since Sep 2, 2022.
2x3 call: any licensee can request it.
No pending applications list it.
Not currently held
· 1 holder on record
· available since Sep 2, 2022
Previous holder: Roberto Negron-Santini
Held KA4ROB Jun 25, 2019 → Sep 1, 2020
· first licensed Apr 25, 2011 as WP4OJH
· 8 licenses · FRN 0020811014
KP4BOB
Active
Technician · vanity
Oct 5, 2021 → expires Oct 5, 2031
Licensee Roberto Negron-Santini
Address Alturas de San Pedro M-31 Calle San Felipe Fajardo, PR 00738
18.3045, -65.6987 (ZIP center) · Grid
FK78dh · CQ 8 · ITU 11 ·
map ↗
FRN 0020811014
Previous call WP4OK
Last granted Oct 5, 2021
Effective Oct 5, 2021
Last action Oct 5, 2021
FCC actions (2)
Oct 5, 2021 — Vanity call sign granted VANGRT Oct 5, 2021 — License issued LIISS
WP4OK
Canceled
Technician · vanity
Sep 1, 2020 → Oct 5, 2021 (canceled)
Licensee Roberto Negron-Santini
Address Alturas de San Pedro M-31 Calle San Felipe Fajardo, PR 00738
18.3045, -65.6987 (ZIP center) · Grid
FK78dh · CQ 8 · ITU 11 ·
map ↗
FRN 0020811014
Previous call KA4ROB
Last granted Sep 1, 2020
Effective Sep 1, 2020
Last action Oct 5, 2021
FCC actions (3)
Oct 5, 2021 — License canceled LICAN Sep 1, 2020 — Vanity call sign granted VANGRT Sep 1, 2020 — License issued LIISS
📦 Moved: Jacksonville, FL → Fajardo, PR
KA4ROB
Canceled
Technician · vanity
Jun 25, 2019 → Sep 1, 2020 (canceled)
Licensee Roberto Negron-Santini
Address Alturas de San Pedro M-31 Calle San Felipe Fajardo, PR 00738
18.3045, -65.6987 (ZIP center) · Grid
FK78dh · CQ 8 · ITU 11 ·
map ↗
FRN 0020811014
Previous call KP4BOB
Last granted Jun 25, 2019
Effective Aug 14, 2020
Last action Sep 1, 2020
FCC actions (4)
Sep 1, 2020 — License canceled LICAN Aug 14, 2020 — FCC action LIAUA Jun 25, 2019 — Vanity call sign granted VANGRT Jun 25, 2019 — License issued LIISS
📦 Moved: Bayamon, PR → Jacksonville, FL
KP4BOB
Canceled
Technician · vanity
May 15, 2012 → Jun 25, 2019 (canceled)
Licensee Roberto Negron-Santini
Address 8450 Gate Parkway W Unit 303 Jacksonville, FL 32216
30.2811, -81.5817 (ZIP center) · Grid
EM90fg · CQ 5 · ITU 8 ·
map ↗
FRN 0020811014
Previous call NP3AR
Last granted May 15, 2012
Effective May 19, 2017
Last action Jun 25, 2019
FCC actions (4)
Jun 25, 2019 — License canceled LICAN May 19, 2017 — FCC action LIAUA May 15, 2012 — Vanity call sign granted VANGRT May 15, 2012 — License issued LIISS
NP3AR
Canceled
Technician · vanity
Jan 21, 2012 → May 15, 2012 (canceled)
Licensee Roberto Negron-Santini
Address PO Box 1872 Bayamon, PR 00960
18.4169, -66.1427 (ZIP center) · Grid
FK68wk · CQ 8 · ITU 11 ·
map ↗
FRN 0020811014
Previous call NP3BF
Last granted Jan 21, 2012
Effective Jan 21, 2012
Last action May 15, 2012
FCC actions (3)
May 15, 2012 — License canceled LICAN Jan 21, 2012 — Vanity call sign granted VANGRT Jan 21, 2012 — License issued LIISS
NP3BF
Canceled
Technician · vanity
Nov 29, 2011 → Jan 21, 2012 (canceled)
Licensee Roberto Negron-Santini
Address PO Box 1872 Bayamon, PR 00960
18.4169, -66.1427 (ZIP center) · Grid
FK68wk · CQ 8 · ITU 11 ·
map ↗
FRN 0020811014
Previous call KP4BOB
Last granted Nov 29, 2011
Effective Nov 29, 2011
Last action Jan 21, 2012
FCC actions (3)
Jan 21, 2012 — License canceled LICAN Nov 29, 2011 — Vanity call sign granted VANGRT Nov 29, 2011 — License issued LIISS
KP4BOB
Canceled
Technician · vanity
May 24, 2011 → Nov 29, 2011 (canceled)
Licensee Roberto Negron-Santini
Address PO Box 1872 Bayamon, PR 00960
18.4169, -66.1427 (ZIP center) · Grid
FK68wk · CQ 8 · ITU 11 ·
map ↗
FRN 0020811014
Previous call WP4OJH
Last granted May 24, 2011
Effective May 24, 2011
Last action Nov 29, 2011
FCC actions (3)
Nov 29, 2011 — License canceled LICAN May 24, 2011 — Vanity call sign granted VANGRT May 24, 2011 — License issued LIISS
WP4OJH
Canceled
Technician
Apr 25, 2011 → May 24, 2011 (canceled)
Licensee Roberto Negron-Santini
Address PO Box 1872 Bayamon, PR 00960
18.4169, -66.1427 (ZIP center) · Grid
FK68wk · CQ 8 · ITU 11 ·
map ↗
FRN 0020811014
Last granted Apr 25, 2011
Effective Apr 25, 2011
Last action May 24, 2011
FCC actions (3)
May 24, 2011 — License canceled LICAN Apr 25, 2011 — License issued LIISS Apr 25, 2011 — Systematic call sign granted SYSGRT
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Apr 16, 2022 → Sep 27, 2026 · 36 snapshots · as KA4ROB
Roberto Negron-Santini
Alturas de San Pedro M-31 Calle San Felipe, Fajardo, PR 00738
18.3045, -65.6987 (ZIP center) · Grid
FK78dh · CQ 8 · ITU 11 ·
map ↗
Seen Sep 5, 2017 → Sep 27, 2026 · 19 snapshots · as KP4BOB
Roberto Negron-Santini
8450 Gate Parkway W Unit 303, Jacksonville, FL 32216
30.2811, -81.5817 (ZIP center) · Grid
EM90fg · CQ 5 · ITU 8 ·
map ↗
Seen Oct 17, 2011 → Sep 27, 2026 · 200 snapshots · as WP4OJH
Roberto Negron-Santini
PO Box 1872 Bayamon, PR 00960
18.4169, -66.1427 (ZIP center) · Grid
FK68wk · CQ 8 · ITU 11 ·
map ↗
Others requesting KA4ROB
6 applications listed KA4ROB as a choice, newest first.
Filed Award Applicant Choice # Status
Nov 21, 2025
Dec 9, 2025
KQ4BHX · Robert N Hughes Jr · Clemson, SC
3 Granted Jul 1, 2022
Jul 19, 2022
KQ4BMQ · Robert Ghost · Hudson, FL
3 Granted Jul 1, 2022
Jul 19, 2022
KQ4BMQ · Robert Ghost · Hudson, FL
2 Dismissed Jun 6, 2019
Jun 24, 2019
KP4BOB · Roberto Negron-Santini · Jacksonville, FL
1 Granted Sep 12, 2016
Sep 30, 2016
KM4WOQ · SAMUEL A ROBERTS III · CHINA GROVE, NC
5 Granted Jan 5, 2010
Jan 23, 2010
KE4TBS · ROBERT Q BYRD · Sims, NC
7 Granted
Data: FCC Universal Licensing System, amateur service · refreshed nightly
n9tpb.com · 73 de N9TPB