Here is my problem with a dedicated wiki section: it doubles up the navigation.
I would like to have one meeting point for a certain topic, e.g. antennas.
If we pin a wiki post on top of each subsection, I think that would make a nice hybrid between wiki and forum.
A common problem of forum threads is that they are too chaotic, and elaborate first posts are often not maintained. They are a good hangout for the locals, but a big task for a noob.
A common problem of niche wikis is that not many people contribute and articles are quickly out of date, and then the whole thing is abandoned soon.
A pinned wiki post on top of each subsection might solve that.
One concise and up-to-date post, maintained by the "locals", those who post content or answer questions in this section. Every time you answer a question twice (or a very good one first), put it in the wiki post.
I think that would benefit the wiki part (constantly being updated), and the forum part ("clean" of ever-repeating similar questions).
What functionality do you see missing when having the wiki posts each on top of a related forum section?