Usually near the end of an amateur radio conversation (QSO) the phrase “seven three” or “seventy three” will be heard.  New hams or unlicensed listeners will probably wonder, 73 what?  Here is more of that ham-speak stuff we are learning about and this terminology has a very particular meaning.

73 simply means, “Best Regards”.  It is a very common phrase used on the radio in voice, Morse code (CW), and data communication modes and is often used in emails and handwritten notes between hams.  73 is considered a polite and friendly way of signing off all forms of communications between hams or as a general show of respect.

The origins of 73 are not absolutely certain, but the prevailing idea Continue reading →