Yes, its legal (in the US): FCC Part 97.119c "One or more indicators may be included with the call sign. Each indicator must be separated from the call sign by the slant mark (/) or by any suitable word that denotes the slant mark. If an indicator is self-assigned, it must be included before, after, or both before and after, the call sign. No self-assigned indicator may conflict with any other indicator specified by the FCC Rules or with any prefix assigned to another country."
From a protocol point of view, it is not part of the address/callsign - it is a separate field. Actually the 8th position designator (module, etc.) is more problematic from a very strict reading of the above rule, but I think most regulators would permit some leeway here. There is no intent to mislead and there is usually a space separating the callsign from the designator. One must also be cognizant of 97.113a4 which prohibits "false or decptive messages, signals or identification" On May 19, 2009, at 7:30 AM, Barry A. Wilson wrote: > > > Ray & John, > > It was originally stated to use the MYCALL short message field which > is > only 4 characters and I think it has merit but is it legal? > > > John Hays Amateur Radio: K7VE j...@hays.org [Non-text portions of this message have been removed]
