THANK YOU @Henry Spragens !
This is exactly what I am looking for, and your reply mirrors my own best guess. I just did not want to hook things up without asking first - experimentation should be a directed, and not a hit and miss, enterprise. :-)
Thank you for the link to you work with the similar, brown-colored boards. I have used several of those with pleasing results. I use several microphones using them with amateur radio transceivers and computer speech recognition applications. While I cannot say they are studio quality, they are sufficiently quiet and clear for my use. I attach photos of one such home-brewed project that turned out well using a hacksaw, drill, and short length of scrap aluminum antenna tubing.
I appreciate the heads up and will proceed accordingly. Thanks for the confirming uptake. James / K8JHR