Recent content by cf8

Set it down like a giant plug. Hopefully it would at least slow it down enough to give some more time for thinking through a better solution, or better yet, allow something to get close enough from underwater to put a bunch of sand to fill in the gaps between the rocks.

Fixing BP Oil Mess? I have no idea where to put this thread, [Edit: Thanks for moving it, whoever did; apparently the forum search engine didn't understand "bp oil", since no results were returned before I posted.] but I wanted to see if this even seems possible, whether or not feasible. Also...

InVisage: "Quantum Film" - real of fake? First a link: http://www.invisageinc.com/page.aspx?cont=QuantumFilm%20Technology" . (Company's website page for it; used for their wording on the claims.) Then another: http://www.google.com/search?q=quantum+film". (Google Web Search for Quantum Film...

Thanks! I think that might have been just a tad bit "over my head" (although I now have more terms to add into my searches), but let me see if I can come up with an analogy to understand this. So, it's one of those things where "it depends on the situation"? [begin analogy] Sort of like how...

I've never understood this, but none of the people that I thought would know could think of a reason, either. It's probably just some simple detail that I've overlooked, but I'm stumped. So... I've always been taught that "lightning is a gigantic spark of static electricity", but I've also...

Okay, I've done some research, and I have one quick question so far. If "active antenna(s)" are for receiving, then what is the equivalent device for transmitting?

Imagine the headlines a few centuries from now:

Unless, that "someone else" knows how to view the logs on the router configuration page (not hard to do), or if, for some odd reason or another, you shared an online account from a service that would keep records of this; Google is the main one I'm thinking of, X-Marks would have that...

In order: I don't really need for any particular carrier frequency to have a specific width, if that's what you're asking. Maybe this will clarify a bit: Now to explain an example. My RF circuit's frequency range (the possible frequencies it can be tuned to) has an upper limit and a...

First, I do understand the part about the "center" frequency; I think it's sometimes called "spread spectrum"? Anyways, thanks for mentioning it; I'm definitely not sure of the proper usage of these terms in this context. Let me see if I can clarify... I appreciate your patience; Google has not...

I used the term "data", but in this case, I'm just trying audio. I am aware of legalities, I'm not planning large scale - just tinkering for the sake of experience. Eventually, though, I would like to have a short-range system like this - as in, a transmitter connected to my computer, and a few...

Okay, basically what I'd like to be able to do is have some sort of "universal" RF (FM) audio circuit. Actually, two: One for transmitting, and a separate one for receiving. (I'd prefer to keep it simple, and therefore not a transceiver circuit. This is for one-way communication.) My ideal...

Awesome; thanks!

Ah, okay, thanks. I'll check into this. (I just started college.) Ah, I see how that works now! Ah, this makes sense! I was trying to picture why, and now I get it. ...So a coil "electrically lengthens" the antenna? Yeah, I figured as much, but I am starting to understand this more.

Yeah, I've read almost the entire Wikipedia page a few times now. Also, I keep hearing about the ARRL antenna book; I guess I'm just going to have to get it. I didn't know if it was really that good or not, but it must be - everyone recommends it! LOL. I didn't know that there were...