Pushing the envelope

[LawrenceHill]

@mikkyo

I wonder what the circuitry of one of these is like?

Very much like the picture in this post:

The Final Filter Shootout

btw. here are two pictures from my tinker-lab. first shows what happens if one is too dumb to desolder a saw filter - the second shows inside of the minicircuits 2-way splitter zapd-2dc+ [airhead] [mc_splitter]