Ryan Flowers W7RLF, observes that JS8Call has a new feature that is great for BITX owners.
In the configuration, you can have it persist the PTT between 15 second frames. It’ll save a lot of wear on your relays. It’s not on by default, so you do have to configure it. It’s under Rig > PTT.
http://js8call.com/2019/06/18/js8call-v1-1-0-released-today/