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7 Posts
Heh... So I have mostly got my DB8 aimed in the right place. Seems that tvfool's bearings are a LOT more accurate than anyone else's transmitter bearings. Now I run into the issue of "tweaking" the aim. By tweaking, I mean, having to move the antenna by as little as 1/16 of an inch, climbing back down the latter, checking signals, and then going back up the ladder to adjust again. I've been doing that for three days now.
I finally have it aimed where all but the local FOX comes in at about 50-70%, and I'm thinking that that is going to be the best I can do for now, until they go full power in February. What's really eating at me is that the Fox station is in and out pretty bad, while everyone else is fairly strong. And, they're all on the same tower.
So my first question is this: Can anyone recommend a cheap, but usable, hand held meter for aiming antennas? Or does anyone know how to do it using a multimeter? Back when I had satellite, the satellite guy had a nice one that told him when the dish was aimed for the best reception, and I have seen mention of hand held meters here and other places, but no idea where I could find one and buy it.
Now, after getting that one aimed, I have a second antenna. I just learned the hard way that stacking two UHF antennas back to back is not the best way to go about doing that.
SO, I will now go and buy a second roof mount and mount the next antenna. The antenna in this case is a Radio Shack U-75R. I want to point this one at about 306 Deg. to pick up stations in Greensboro, NC. The DB8 is pointed at 93 deg. to get the local Raleigh-Durham stations.
My question here is: How close can I put the second UHF antenna so it won't interfere with the DB8? The idea is to put both antennas onto a duplexer and run one RG-6 run into the house to feed the DTV tuner. Obviously, having them on the same mount, and seperated by no more than 18 inches is a bad idea. So how close CAN they be and not cause reception issues with each other, especially since they'll be pointed in opposite directions?
For what it's worth, here's my tvfool report so you can see what I mean WRT the RDU and Greensboro stations (Keep in mind that I am about equidistant from each set of transmitters):
I finally have it aimed where all but the local FOX comes in at about 50-70%, and I'm thinking that that is going to be the best I can do for now, until they go full power in February. What's really eating at me is that the Fox station is in and out pretty bad, while everyone else is fairly strong. And, they're all on the same tower.
So my first question is this: Can anyone recommend a cheap, but usable, hand held meter for aiming antennas? Or does anyone know how to do it using a multimeter? Back when I had satellite, the satellite guy had a nice one that told him when the dish was aimed for the best reception, and I have seen mention of hand held meters here and other places, but no idea where I could find one and buy it.
Now, after getting that one aimed, I have a second antenna. I just learned the hard way that stacking two UHF antennas back to back is not the best way to go about doing that.

SO, I will now go and buy a second roof mount and mount the next antenna. The antenna in this case is a Radio Shack U-75R. I want to point this one at about 306 Deg. to pick up stations in Greensboro, NC. The DB8 is pointed at 93 deg. to get the local Raleigh-Durham stations.
My question here is: How close can I put the second UHF antenna so it won't interfere with the DB8? The idea is to put both antennas onto a duplexer and run one RG-6 run into the house to feed the DTV tuner. Obviously, having them on the same mount, and seperated by no more than 18 inches is a bad idea. So how close CAN they be and not cause reception issues with each other, especially since they'll be pointed in opposite directions?
For what it's worth, here's my tvfool report so you can see what I mean WRT the RDU and Greensboro stations (Keep in mind that I am about equidistant from each set of transmitters):
