I’m not sure what your project is but you may want to look at a variable RF single samplers like a Bird 4275. There are also less expensive units that have sliding plungers (eBay). Here is a video showing the use of a Signal Hound SA44B with RF sampler (video is about setting modulation level in a packet TNC). Not sure if this video applies to what you want to do but it may give some ideas.
Hi Hank, what a coincidence. I actually watched exactly that video a day or 2 back. It really helped clarify a few things for me.
See my reply to Justin above. Does that pretty much agree with what you’re suggesting? Although I’d want a Directional Coupler, not a Single Sampler like the Bird 4275, because I want to be able to measure reflected power (i.e. SWR). Also, the Bird is good from 20mHz to 1GHz, whereas I want something more in the range of DC (or 1mHz at most) upto about 500mHz.
So if I’ve understood all this correctly, I should start hunting for a Dir Coupler which accepts ~10W in, has -30dBm coupling loss and is good across 0-500mHz. Know of such a thing?
Best, Dave W7BOT
