Entry of callsign?

Ok, call me old fashioned. ;)

I see the the notices that in the USA to use the 3DRadio 900 MHz link, you need a ham radio license.

Ok, I have that (Extra class licensee for many years)!

But I don't see any place in the software to allow my Amateur radio license callsign to be entered. Have they changed the rules?  It used to be required to have a licensee's callsign somewhere in the data stream or sent via CW (Morse code) at the beginning, every 10 minutes and at the end of all transmissions.

Honestly, I haven't done a deep review of the latest FCC regulations for data streams on the Amateur bands (Ham radio frequencies) lately.

Here are a few references:




So is this available somewhere? Looking at the Mission Planner on the 3DR Radio settings page, I don't see a field for entering my license callsign. Or did I miss it somewhere?

Now that I'm thinking about it, how about on miniumOSD also?

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –


  • Developer

    I see the the notices that in the USA to use the 3DRadio 900 MHz link, you need a ham radio license.

    where do you see that?

    The 900MHz 3DR radio is an ISM band radio and complies with the requirements (ie. EIRP and frequency hopping) for radios that can be used with a class license, and with no need for a HAM license in the US.

    You could configure it to be non-compliant, but I'm not sure why you would want to.

    Cheers, Tridge

  • Perhaps this exclusion applies:

    § 97.215 Telecommand of model craft.
    An amateur station transmitting signals to control a model craft may be operated as follows:
    (a) The station identification procedure is not required for transmissions directed only to the model craft, provided that a label indicating the station call sign and the station licensee's name and address is affixed to the station transmitter.
    (b) The control signals are not considered codes or ciphers intended to obscure the meaning of the communication.
    (c) The transmitter power must not exceed 1 W.

This reply was deleted.