Etymology. QRZ, the name of the website, is the "Q" code for "Who is calling me?" and corresponds to the site's purpose of assisting amateur radio operators with the lookup of ham radio call signs from every country in the world.

The app interfaces the popular QRZ resource and allows for quick access via icons on the bottom of the screen. - Search for a call sign and receive name, location information including grid, license level, license expiration, etc. - Select more icons to preview a photo, bio page, recent logbook entry (if used), etc.

I'm new to HF and have a question about QSO conversations with "QR Zed" and "QSL". It seems to me the meaning of QRZ has somewhat changed over time. It's my understanding that QRZ means "who is calling me" and QSL means "can you acknowledge."