[Premium-Rx] FST3125 mixer

[W.J. Ubbels]

Hi all,

This may be a bit off-topic, but I thought I'd ask:
Is there anyone on the list who has experience in using the FST3125 H-mode
mixer in an up-converting HF receiver design, with an LO from say 45  to
75MHz (and a 45MHz IF)?
I have built such a mixer myself, but I am not satisfied with the results
when using it at input frequencies of 25MHz and up. I have noticed a lot of
noise coming from the mixer which is then fed down the IF chain when
listening at these frequencies. It appears to me like some kind of
oscillation in the mixer or its driver (74AC86). Any help is appreciated.

Regards,

Wouter PE4WJ