I am experimenting with Tayloe switching front end.
I have an FST3253 switching mixer, fed from 74ac74 divider and an SI570, with a FIN1002, controlled by an MC9SQ8QG8 and 24AA32 controller. An LT6231 op amp amplifies the whole thing.
The set works excellent, but I have noticed a 1Khz backround tone, present on alll bands and frequencies, it is static, does not change in the frequency or level.
Any ideas how to eliminte please ! The whole project is well decoupled.
Paul