About the ADE-1-24,
The spec's are somewhat equal to the Data-sheet of the ADE-1
The only big difference is that the footprint of this mixer is actually a mirror image of the original ADE-24.
If you mirror over the long axel, you will actually swap pin 1 with 6, 2 with 5, 3 with 4.
Just compare this mixer to pictures on google of the original ADE-1: https://commons.wikimedia.org/wiki/File:Frequency_mixer_Mini_Circuits_ADE-1_macro.png
I tested this mixer with the Bitx-20.
Also with two signal generators and a spectrum-analyzer and it worked like it should be.
As far as I am concerned, I am happy with this ADE1-24 mixer.