I had used HMC423 mixer in one of the module which was used in upconverting 308MHz IF with 960MHz as LO to generate 1268 MHz RF. As the HMC423 became obsolete, I found suggested alternate part HMC608 in analog site.
But I got doubt as RF frequency range is shown split which does not cover 1.1 to 1.4 GHz. I just wanted to know whether it can be used for my application.
This is the screen shot of HMC686 specification.
It can be used from 1.1GHz to 1.4GHz, however there is some roll off in conversion gain and IIP3.