Gary wrote:
anyone here tried a homebrew wattmeter using an AD8307 log amp?? need
to chat w/ you...

gary
ka9rao

Hi; my first post so hope it works.

Yes, I built mine largely on the Kopski circuit. Manhattan
construction.

I made a separate measuring head in a small diecast box with a cable
which plugs-in to the meter unit via a microphone plug/socket.

I also made another head in an identical little box; it contains a
return-loss bridge with an AD8307 as the detector. Works fine up to
650 MHz. It allows quick & accurate return-loss measurements; I call
it my poor man's scalar network analyser.

Kerry VK2TIL.