@AA7QQ - Ed,
Well, when you play with this stuff enough that Ten Tec rig will seem rather dull compared to a radio that you built yourself and know inside and out - - and you didn’t have the outlay for it either compared to the Lime.
Well, for now I’m going full duplex for the experimentation I’m doing but I plan, longer term, to go simplex and will have a T/R switch in place for the Lime. At some point Edouard @F4EXB was going to play with the GPIO for the Lime, but I don’t know if he was going to do that on the companion board (which is pretty pricey, but will DEFINITELY drive medium-sized relays) or try working that with the GPIOs on the board itself. I have heard of other Hams who have actually worked with the code to switch the bits on the GPIO on the LimeSDR to make the PTT work. You may want to wade through the threads within the past week to see what they’re doing on that. At the moment I have my nose in GPS with the Lime and will return to Earth when that’s run its course.
But, definitely, I plan to implement a T/R switching off the <really low voltage…like 3.3V> GPIO on the LimeSDR board and will build up an interface that will steer a larger relay for the antenna switching - it’s in my plan soon.
Let me know if you have any other questions on any of this, Ed - 73 de Marty, KN0CK