Hi Paul,

Am 19.12.2018 18:57, schrieb N1BUG:

Hi Stefan,

Thanks for showing us your TX converter circuit. That is a bit more
complicated than I was expecting which goes to illustrate my point
about why diagrams are so important. I thought you meant to use a
simple DBM mixer with a LO. I see I was wrong about that.

I can build this. But how do we connect the Ublox LO?

  Remove the
74HC4060 and connect the Ublox to the 74HC4052 CLK pins through a
capacitor?

Do the capacitors in the circuit need to be any special type? It
seems some of them might need to be quite stable?

I took normal ceramic Cs and foil Cs, just what i found from the junk box.

73, Stefan