I registered for HamAlert at this link. The following screens are from the website. You can do the same with the HamAlert app for your smartphone. I use the app as the destination for most of my alerts. Note I can monitor KFF Parks On The Air activations, monitor myself and a list of callsigns for my buddies. I only monitor KFF on the weekend. There are lots of activations going on.
What is HamAlert?
Here are the details on my buddies list.
It turns out for those that run FT-8, I get too many alerts. So I set up limits. I could change the limits for the weekend to get all the alerts.
Below are spots shown on my Android smartphone. It is great to know that Tom G0SWB is on CW even if I am not near the rig. He is brushing up on his CW.
Your settings will be according to your preferences. If you want to find N4KGL your chances are pretty good with HamAlert. BTW, send TEST DE YOURCALL on CW and you will trigger RBN. The alert comes back immediately. Note on SSB, I can spot myself on DX Cluster and the alert goes out. Easy!