A few days ago I received a message from Nick N1KMP, asking for some clarity on three devices we often see on my blog and YouTube channel. Well, I decided to write a blog post about it, to help anyone else who might have the same questions, or uncertain about which of these devices would be the best one for their needs. The devices were - Mobilinkd BT TNC for APRS/Packet - WolphiLink interface for digital modes on an Android device - ZLP MiniProSC digital modes interface http://www.survivaltechnology.net/digital-mode-interfaces-and-aprs-modems/ Whenever possible, I will always try to make a blog post, or video responding to questions received from amateur radio operators all around the world. I don't always know the answer, but I promise we will always try to learn, finding the answers together. de OH8STN