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.
KJ4TDM
ValidMichael B Erwin
- License type
- Person
- Operator class
- General
- Grid square
- EM63 (the first four characters only)
- Granted
- 03/30/2020
- Expires
- 03/16/2030
Everything We Know About KJ4TDM On This Site
Sonde receiving station
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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).