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

WRAW451 GMRS 📡 HAM

📡
Also a licensed HAM
KR4OK
Advanced class · same FCC Registration Number (FRN)

Current holder: Jeffrey M Alderfer

General Mobile Radio Service license · held by Jeffrey M Alderfer · Harleysville, PA · FRN 0004008108

StatusActive
GrantedMar 24, 2018
ExpiresMar 24, 2028
Mailing address223 American Way #104, Harleysville, PA 19438
A GMRS license covers the licensee's immediate family, and lasts 10 years.

📻 GMRS repeaters within 50 miles

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

MilesChannelOutputTone inOwnerLocationAccessStatus
4RP21462.700136.5 WRYL566 Worcester, PA OpenOn the air
8RP20462.675D506 WRAV831 East Norriton, PA · Einstein Medical Center OpenOn the air
11RP18462.625192.8 WRVZ620 Quakertown, PA OpenOn the air
12RP18462.625D346 WRVZ620 Quakertown, PA OpenOn the air
16RP18462.625179.9 WRMD534 Warminster, PA ClosedOn the air
18RP17462.600136.5 WSMV317 Penn Valley, PA OpenOn the air
20RP22462.725141.3 WROE856 Richboro, PA OpenOn the air
21RP16462.575114.8 KAE5263 Allentown, PA · Big Rock Park OpenOn the air
23RP15462.55085.4 WPTV577 Allentown, PA · Big Rock Park OpenOn the air
25RP18462.625192.8 WPTV577 Bethlehem, PA · Savercool Ave Gauff's Hill OpenOn the air
26RP21462.700D365 KAE8031 Easton, PA · Gaffney Hill OpenOn the air
27RP22462.725225.7 WRAX971 Philadelphia, PA · Marconi Park OpenOn the air
28RP21462.700136.5 WPWN390 Chester, PA · Sunoco Station OpenOn the air
28RP21462.700136.5 WPWN390 Chester, PA · Sunoco Station OpenOn the air
29RP21462.700146.2 WROM573 Reading, PA OpenOn the air
30RP15462.550D025 WSAR525 Reading, PA OpenOn the air
31RP20462.675D506 WRWL377 Tullytown, PA ClosedOn the air
32RP22462.725186.2 WSAW263 Morrisville, PA OpenOn the air
32RP15462.550136.5 WSLC242 Lynnville, PA OpenOn the air
33RP17462.600— WQWL772 Flemington, NJ · Cherryville OpenOn the air
35RP19462.650141.3 WRJG249 Slatington, PA · Blue Mountain OpenOn the air
37RP15462.550— WRDU953 Wilmington, DE · Claymont/Arden ClosedOn the air
37RP18462.625D251 WSCU294 Bangor, PA · Near Franklin Hill Vinyards OpenOn the air
40RP17462.600192.8 WPTV577 Wind Gap, PA · Next To Route 33 OpenOn the air
41RP22462.725D125 WQYM530 Jennersville, PA · Sr 1 / Sr 796 OpenOn the air

Showing the closest 25.

📡 Amateur radio licenses on the same FRN

CallStatusClassNameLocationGrantedExpires
KR4OK Active Advanced JEFFREY M ALDERFERHarleysville, PASep 25, 2018Dec 23, 2028
K3JMA Canceled Advanced JEFFREY M ALDERFERDenver, NCApr 22, 2008Apr 22, 2018
KR4OK Canceled Advanced JEFFREY M ALDERFERDenver, NCNov 1, 2003Nov 1, 2013
K4JMA Canceled Advanced JEFFREY M ALDERFERDenver, NCAug 25, 2001Aug 25, 2011
WA4JMA Canceled Advanced JEFFREY M ALDERFERDenver, NCOct 17, 2000Oct 17, 2010
KR4OK Canceled Advanced JEFFREY M ALDERFERDenver, NCMar 8, 1994Mar 8, 2004

📜 License history

DateFCC action
Jul 25, 2025Administrative update
Aug 23, 2021Administrative update
Mar 24, 2018License issued

🏠 Address history

Every address Jeffrey M Alderfer gave the FCC on a GMRS filing, newest first.

Filed fromAddressOn a
Jul 24, 2025223 American Way #104, Harleysville, PA 19438Administrative update
Aug 23, 20214789 Lazy Ln, Denver, NC 28037Administrative update
Aug 23, 2021422 Main Street, Apt. 6, Harleysville, PA 19438Administrative update
Mar 23, 20184789 Lazy Ln, Denver, NC 28037New license

📝 GMRS applications filed

ReceivedFile numberPurposeResultFiled from
Jul 24, 20250011663423Administrative update GrantedHarleysville, PA
Jul 24, 20250011663541Administrative update GrantedHarleysville, PA
Jul 24, 20250011663571Administrative update GrantedHarleysville, PA
Aug 23, 20210009671874Administrative update GrantedHarleysville, PA
Aug 23, 20210009671878Administrative update DismissedDenver, NC
Mar 23, 20180008145106New license GrantedDenver, NC

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