Looking to get into homebrewing (bought the intro to RF design years ago, but life got in the way). I've built some kits over the years, and have done some ugly construction, so not unfamiliar with things here. The '602/612 chip is of course well established in the QRP community, no wonder as it has gain and a built-in oscillator, so it works great for low parts count and low power consumption. But it also is known for not handling large signals--fine for after a filter for conversion to baseband, but on the front end... it can suffer. I know there is the Dan Tayloe mixer, but I recently saw that KD1JV has a mixer using a 74HC4053 on the DCxxB series of transceivers. Might be in use elsewhere. Appears to run the RF differentially through it, kinda cool. My only concern with that is the high on resistance, but maybe that's not a big thing, a mixer is usually lossy. Might not be good beyond HF either, but it might be easier than a diode mixer and maybe it handles the big signals better than the 602/612? So the question is, where does this mixer fit in? Between 602 and a diode mixer? I think I have parts in the mail for making both '4053 and diode mixers, so I could always build both I suppose, but I'm wondering if others have settled this question.