Quote:
Originally posted by tzmitch
It came with a Winegard Sensar II, but I'm not clear on the model. On the bottom it has a little sticker that says "amplified", but it came with no amplifier so I don't know if that makes it a GS1000 or a GS2000a.
...
The website says this antenna is bidirectional, so I'm guessing that means it's directional in two directions, but I don't know what those directions actually are. When I installed this with just some inexpensive Sima diplexers, only got a couple of channels. Then I put the Winegard diplexer that has DC pass on both sides so that DC would get to the antenna and I got more stations. I futzed with this for an hour or so last night and got it oriented so that it "faces" about 290 degrees...
Welcome! I'll take a shot at it.
If you look around on the internet, you might be able to find a diagram that shows how many dB's it picks up from various angles (polar patterns).
Here's mine for instance. I presume that it's "back and front". It makes sense that once it had the DC it worked better... the amp is in the antenna, I guess.
Quote:
Originally posted by tzmitch
I'm fairly satisfied with this set up, but I'd like to make it better if it's possible, especially if there was something I could do to pick up WTVI and reduce the audio problems that I saw on WCCB. Would changing the way the antenna is positioned help at all, since the position was entirely done by trial an error? The cable runs aren't too long (maybe 30 feet from recv to wiring panel, and 40 or 50 feet up to the attic), but would some sort of amplifier like I saw at radio shack help? If so, should it be one of those inline or bi-directional ones?
Educated (antennaweb) trial and error is about the best you can do. You need to watch-out for cheap amps, especially if you have other amps (like the one in the antenna) because they can cause distortion. You can see the distortion on an analog signal, but on a digital signal, you sometimes just get strange results. Since the same towers hold the analog and digital transmitters, you might try watching the analog channel, maybe with an in-line signal restrictor (RS sells one). It's just more trial and error, but the idea is that you let just barely enough of the analog signal through, then position the antenna.
Quote:
Originally posted by tzmitch
Antennaweb says I should go for a red antenna type, but I don't have the desire to have a big antenna on top of the house (or pay for the install), even if I could get it by the HOA. Would there be another antenna I could mount in the attic (like the square shooter) that would work well considering that there are two main clusters of transmitters that are roughly 90 degrees apart from my neck of the woods?
Ouch. 90 degrees apart. Your best bet would be to buy a second antenna and get a receiver that had two inputs. I used to have an antenna rotor in my attic. It worked okay, but you couldn't really 'surf' channels, and it seemed to always be pointed the wrong way for timed recordings (which I do a lot of). So I rigged-up a bunch of filters so I can combine two antennas, and have a third (for WUNG) because that's off by itself (that one goes into it's own special connector on my tuner - I hope they feel special).
Here is a thought for you, though. This might actually WORK because of your stations being 90 degrees apart! Just take a second antenna and hook it up with a passive "splitter". Position it 90 degrees (as exactly as you can) to the other antenna. Since the antennas are perpendicular to each other, signals from the stations will not cancel each other out. What I'm guessing here is that a station that's straight off to the side of your antenna will have 'no effect' on that antenna, but the other antenna will get the full force of the signal. Maybe you know this already, but if you took two antennas, pointed them in opposite directions, and connected them with a passive "splitter", that's as good as having no antenna at all; the signal hitting the front of one antenna also hits the back of the next antenna and when mixed, cancels-out the signal. But since you're 90 degrees, I wonder if you can dodge that bullet.
Go ahead and buy the square shooter. Bob swears by his! You can hook it up alone or in the 90 degree configuration and then come back and tell us how it worked!
--Dale--