Tony in MI, once again you've provided great info! However, I continue to believe that what we deafies really need is a manual to lead us through all the underbrush of various types/makes of aids and all their accessories!
You've just mentioned mics that pair with a specific brand of aid. Had one, tried using it, worked with my aid (which has a telecoil), but wasn't strong enough to even pick up TV audio when placed right in front of the TV speaker. Failed miserably during meetings. I finally just gave up on it.
Several people, you included, have mentioned induction loops. which apparently are useful WITHOUT needing to be purchased specifically for your brand of aid. The Williams induction loop has been mentioned often, as has the Williams Pocketalker (which seems to have received mixed reviews from people on this forum).
Am I correct in assuming that, if I buy a Williams loop and Pocketalker that it will simply work with my Bernefon (Oticon) aid?
Again, I'd be more than willing to do the work and front the costs to produce a simple manual for people who need aids and all their accessories. I don't doubt that it would have a small market–i.e., I'd eventually earn back the cost of publishing it. Decades ago, I nagged VEDA into publishing three books about inner ear disease and subsequently saw posts from people who had benefitted from them. In that case I edited, designed, prepared for printing, found the printer, and managed the distribution for VEDA, but didn't front the cost. Yes, books are "old school" these days…except for manuals or "how to" books that are not for reading but for reference. There's also a tiny market for books that are stunningly beautiful, and am working on one of those right now. Hard to discourage book designers!