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
NA1MH
Valid
David C Martin
License type
Person
Operator class
Extra
Grid square
EM36 (the first four characters only)
Granted
01/27/2026
Expires
04/19/2036
Previous call sign
K5DCM

FCC License Page QRZ.com Page DMR ID on RadioID

Call Signs on This Site That Start With NA1MH (3)
Call SignOn this site
NA1MHRepeater
NA1MH-1APRS station
NA1MH-NAPRS station

Press a call sign for its license and everything the site knows about it.

Everything We Know About NA1MH On This Site
Repeater
147.3000 MHz DMR, color code 1
APRS stations
NA1MH-1 digipeater
NA1MH-N gateway
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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).