I've got a really nice LNA that I used with my old reciever.... but don't use it with the SDR. The concept is this: by mounting the SDR directly on the yagi, you eliminate the coaxial losses..... and since one of the main reasons for the LNA is to overcome those losses, you can do away with it from the system without nearly as big a penalty as one would expect. The portable rig in the pic is GREAT for satellites. I'm in the middle of building a 2m / 70cm antenna..... each one with it's own feed harness. That would make it simple to switch between uplink / downlink in less than a second usin the same radio. overloading the LNA / detector has always been a problem in RA, and the SDRplay is no exception. With an LNA, you can overload the SDR quite easily, especially with the yagi since they exhibit side lobes. Even a nearby weak signal outside the beam looks like a fireball on the FFT / Waterfall screen. I run the SDR without an LNA to avoid that problem.