Call Signs, Contacts and Talkgroups

Look up a US amateur call sign, find a DMR contact, or see the talkgroups repeaters use, all in one place.
Call Sign LookupDMR ContactsTalkgroups
NF4J
Valid
Daniel P Bush
License type
Person
Operator class
Extra
Grid square
EM50 (the first four characters only)
Granted
09/19/2017
Expires
09/19/2027
Previous call sign
N4SDB

FCC License Page QRZ.com Page DMR ID on RadioID

Everything We Know About NF4J On This Site
Sonde receiving station
NF4J-2
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Only the licensee's name, class, status, dates and city and state are shown, never a street address. License data: FCC public records through Callook.info. QRZ.com opens in a new tab (its own terms and any sign-in apply).