Topband: Unintentional QRM on TB

[Jim F.]

I listened to HK0NA this morning around 1.8328 and he was sending "12" after his CQ.
and folks were madly calling 12 Khz up,  and 12 Khz down from his frequency.
 
Also lots of callers were calling around  1.812.  
 
All I have is RIT on the 5w. Elecraft K1 and couldn't work him even if I had dual VFOs anyway 
but I still don't know what that "12" meant,  but there sure was ample opportunity for unintentional QRM to occur to other stations and not be entirely the fault of the sender.
 
73,
 
jim / W1FMR