I'm running Zello on an old Samsung Galaxy smartphone that came with TRRS type headphones. Does anyone know where I might find a compatible (corded) speaker mic with PTT? Thanks!
Amazon.com: Walkie Talkie Speaker Microphone, 3.5mm Headphone Jack Handheld Shoulder 2 Way Radio External Speaker Mic with PTT for YAESU/Vertex : Electronics
Here are a couple options. I'm not quite sure if these will work or not, but here you go. I have never heard of TRRS before but I am assuming that it is the same as a 3.5mm jack. Hope this helps!