Thanks Dennis.  
Appreciate the information.

On Monday, July 18, 2022, 05:43:28 PM CDT, Dennis Schaefer <[email protected]> wrote:


That’s just what I would call a “false decode”.   I get one every week or so - comes out of nowhere, or noise, or ????  I don’t think it represents an actual amateur radio transmission, but if it derives from one, it is badly mangled.  

Dennis

On Jul 18, 2022, at 5:35 PM, WB5JJJ <[email protected]> wrote:



I guess I should have elaborated as well.  

What you are seeing is the left station (receiver) is the Rover, thus the /R suffix.  He's working the right station and that right station sends the "R" (RRR RR73 equal) and the right side (transmitting) stations grid square.  

But the call is bogus as the transmitting station call is invalid and the grid is on Antarctica. 

73's
George - WB5JJJ


4


On Mon, Jul 18, 2022 at 5:27 PM WB5JJJ <[email protected]> wrote:
Simple answer is it's the NA VHF contest mode (CM).  Some FFMA grid rovers also use it as it's quicker and only exchanges grid squares.  

73's
George - WB5JJJ


4


On Mon, Jul 18, 2022 at 5:23 PM John McKinnie <[email protected]> wrote:
Periodically, I will see band activity like is highlighted with the red arrow below. This is on 6 Meter FT8.

Does anyone know what this information means? 

Regards,
John
KT4AC


1658182787157blob.jpg

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