N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 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

WSHN606 GMRS 📡 HAM

📡

Also a licensed HAM

W4MRK

Amateur Extra class · same FCC Registration Number (FRN) · LoTW user

Current holder: Mark R Helms

General Mobile Radio Service license · held by Mark R Helms · Arlington, VA · FRN 0033703265

Status	Active
Granted	Mar 18, 2025
Expires	Mar 18, 2035
Mailing address	634 N Monroe St, Apt 1, Arlington, VA 22201

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

📻 GMRS repeaters within 50 miles

27 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
1	RP16	462.575	141.3	KAD6329	Arlington, VA · Clarendon	Open	On the air
3	RP20	462.675	141.3	KAD6329	Falls Church, VA · Seven Corners	Open	On the air
4	RP15	462.550	141.3	WPON592	Falls Church, VA · Seven Corners	Open	On the air
4	RP18	462.625	123.0	WPON592	Alexandria, VA · Fort Ward Park	Open	On the air
6	RP17	462.600	141.3	KAB7046	Alexandria, VA · West End	Open	On the air
7	RP21	462.700	141.3	KAB7046	Washington, DC · Anacostia	Open	On the air
11	RP16	462.575	241.8	WREZ274	Capitol Heights, MD	Open	On the air
11	RP16	462.575	136.5	WRDF311	Alexandria, VA · Mount Vernon, VA	Open	On the air
12	RP18	462.625	156.7	WPON592	Wheaton, MD	Open	On the air
14	RP18	462.625	88.5	WQMM856	Largo, MD	Open	On the air
18	RP18	462.625	141.3	WSHN928	Woodbridge, VA · Government Complex Center	Open	On the air
18	RP18	462.625	141.3	WSHN928	Woodbridge, VA · Government Complex Center	Open	On the air
18	RP18	462.625	141.3	WSHN928	Woodbridge, VA · Government Complex Center	Open	On the air
20	RP22	462.725	88.5	WQMM856	Laurel, MD	Open	On the air
20	RP22	462.725	141.3	WSKD955	Waldorf, MD · Route 301 And Route 5 Split	Open	On the air
27	RP15	462.550	141.3	WQMM856	Lanham, MD · Doctor's Hospital	Open	On the air
27	RP15	462.550	136.5	WRXD980	Burtonsville, MD	Open	On the air
27	RP15	462.550	—	WRYB934	Chestertown, MD	Open	On the air
27	RP20	462.675	103.5	WSAD893	Baltimore, MD · Pasadena	Open	On the air
31	RP19	462.650	192.8	WRJY601	Ellicott City, MD	Open	On the air
36	RP17	462.600	156.7	WSDH649	Stafford, VA	Open	On the air
37	RP19	462.650	110.9	WRQV640	Prince Frederick, MD · State Highway Admin Tower	Open	On the air
37	RP15	462.550	141.3	WRZV755	Baltimore, MD · Pigtown	Open	On the air
38	RP20	462.675	192.8	WRJY601	Baltimore, MD	Open	On the air
41	RP15	462.550	D261	WRTH256	Frederick, MD · Butterfly Ridge Elementary	Open	On the air

Showing the closest 25.

📡 Amateur radio licenses on the same FRN

Call	Status	Class	Name	Location	Granted	Expires
W4MRK	Active	Extra	Mark R Helms	Fairfax, VA	Jun 6, 2023	Jun 6, 2033
KY4XT	Canceled	Extra	Mark R Helms	Arlington, VA	May 10, 2023	May 10, 2033

📜 License history

Date	FCC action
Mar 18, 2025	License issued

🏠 Address history

Every address Mark R Helms gave the FCC on a GMRS filing, newest first.

Filed from	Address	On a
Mar 14, 2025	634 N Monroe St, Apt 1, Arlington, VA 22201	New license

📝 GMRS applications filed

Received	File number	Purpose	Result	Filed from
Mar 14, 2025	0011485763	New license	Granted	Arlington, VA

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