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I have still not received my QDX , but tracking are saying 4/11 - thats good.
But studying the manual and schematics - I wonder what would be the best way to do some measurements on the TX and RX filtering?
Not that I do not believe in the included info , but part of the build and understanding.
I was thinking about adding another DC blocking cap at the junction of C33 and C34? - lifting L14 - so the finales is not working.

And then just use "tune" function of the WSJT-X to the desired band and to start TX parts - so I do not need to to any manual triggering of desired band filer and so on.
And use my Siglent? Frequency analyser to have a closer look at the filters?
But what would the impedance be at this "input" point ?
My FA have 50 Ohm out and input - so I wonder what the 50 Ohm load at the C33 - C34 will do and influent the measurements? ??

For the RX part - I was thinking about adding a 0.1uF? cap at Z output of IC3 ?

Or do anyone see a better way? of doing this ?

73 - Knut

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