N9TPB FCC License Search

🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 2, 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

WROK923 GMRS 📡 HAM

📡

Also a licensed HAM

W4DDA

Technician class · same FCC Registration Number (FRN)

Current holder: David M Grotenberg

General Mobile Radio Service license · held by David M Grotenberg · Oldsmar, FL · FRN 0026302992

Status	Active
Granted	Oct 30, 2021
Expires	Oct 30, 2031
Mailing address	5042 Cross Pointe Dr., Oldsmar, FL 34677

A GMRS license covers the licensee's immediate family, and lasts 10 years.

📻 GMRS repeaters within 50 miles

18 on the air or of unknown status, closest first · map these & export for a GMRS radio →

Miles	Channel	Output	Tone in	Owner	Location	Access	Status
5	RP15	462.550	—	WRCU536	Clearwater, FL · Countryside Area	Open	On the air
7	RP19	462.650	D065	WRZJ421	Tampa, FL · Tampa Shores	Open	On the air
7	RP21	462.700	D065	WRZJ421	Tampa, FL · Tampa Shores	Open	On the air
10	RP20	462.675	77.0	WRQH980	Clearwater, FL	Open	On the air
15	RP22	462.725	141.3	WRXT441	Seminole, FL	Open	On the air
15	RP22	462.725	103.5	WRXD909	Lutz, FL · Lake Como	Open	On the air
16	RP16	462.575	141.3	WRAF954	Tampa, FL · Downtown	Open	On the air
16	RP17	462.600	131.8	WREM697	Tampa, FL	Open	On the air
25	RP19	462.650	118.8	WRBM944	Wesley Chapel, FL · I-75 Exit 279	Open	On the air
29	RP18	462.625	146.2	WQYC991	Valrico, FL	Open	On the air
30	RP21	462.700	123.0	WSDQ989	Ruskin, FL	Open	On the air
32	RP20	462.675	156.7	WPZE485	San Antonio, FL · St. Leo University	Open	On the air
33	RP18	462.625	141.3	WQEZ401	Zephyrhills, FL	Open	On the air
37	RP20	462.675	118.8	WRAW556	Palmetto, FL	Open	On the air
40	RP18	462.625	—	WRDA964	Bradenton, FL	Open	On the air
43	RP15	462.550	141.3	WQEZ401	Ridge Manor, FL · US-301/SR-50	Open	On the air
49	RP20	462.675	67.0	WRKC465	Homosassa, FL · Sugarmill Woods	Open	On the air
49	RP17	462.600	141.3	WRPW274	Lecanto, FL	Open	On the air

📡 Amateur radio licenses on the same FRN

Call	Status	Class	Name	Location	Granted	Expires
W4DDA	Active	Technician	David M Grotenberg	Oldsmar, FL	Sep 2, 2017	Sep 2, 2027
KN4FFV	Canceled	Technician	David M Grotenberg	Oldsmar, FL	Aug 14, 2017	Aug 14, 2027

📜 License history

Date	FCC action
Oct 30, 2021	License issued

🏠 Address history

Every address David M Grotenberg gave the FCC on a GMRS filing, newest first.

Filed from	Address	On a
Oct 29, 2021	5042 Cross Pointe Dr., Oldsmar, FL 34677	New license

📝 GMRS applications filed

Received	File number	Purpose	Result	Filed from
Oct 29, 2021	0009779117	New license	Granted	Oldsmar, FL

GMRS and amateur licenses come from the FCC Universal Licensing System, updated nightly. Licenses are linked by FCC Registration Number (FRN).