Today is the annual ARRL Field Day event. The club I am a member of in Honolulu (the Emergency Amateur Radio Club) will be operating two stations from the North Shore today. I do not know if the club will be using a single callsign or if we will be using the callsigns of control operators. Likely the latter, check the site to see who is signed up. If you are wanting to make a Hawaii HF contact, listen for callsigns that begin with KH6, KH7, WH6, or WH7. Or listen for me with a New England call: KB1PCX.
The weather is more or less cooperating right now. Getting ready to head to the other side of the island for the event.