Thanks Eric, that works well. I have to say I am impressed with both, the TinySA ultra and the up converter although I found that the sensitivity of the up converter goes to hell quickly below about 30Khz I guess that has to do with the way the 10Mhz carrier is reduced, I have not open it yet to see what is done. But, as you can see, a 100khz? -100dbm signal is clearly visible and so is a 50khz -100dbm signal. I played with the interface levels and it is pretty darn close to the input now and tracks it well up to 0dbm.?
I found however that the use of the LNA is not recommended even at those low levels probably because of the still high in comparison 10Mhz feed-trough that swamps the input. And really, it is not needed. Anyways enough of this, people probably get bored lol.?
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John Cunliffe W7ZQ