I also have a U4000 from Antennacraft. Worked pretty well and in fact I was able to receive 2, 7 and 22 from Dayton reliably with it. Only problem was I needed to move the antenna up or down a foot to receive either 2 or 7 adequately. However, that was when the antenna was in a previous location. After moving the setup 10 feet further east and installing the Super G 1483 suddenly I gained Ch. 26 and also reliable reception of 2 and 7 without having to move the antenna up or down a foot. Makes me think if I stacked a couple of 4 bays it would do what I need it to. Or a rotor which I will need for DX purposes and to likely get 2 or 7 reliably will solve the issue.
I probably should do a test with the U4000 at the current spot before buying another 4 bay. While the U4000 is now my travel antenna at least I could get an idea if I will need to stack 4 bays at the current spot or can get by with a single 4 bay. May still try something like the CM 4248 or buy a U8000 which still seems to be available online at a couple of places.
I read the CM 4248 has a bit more gain in the 30 plus channel range vs. the DB8. DB8e will be too and heavy for me to mount at my location due to the constraints of locating the antenna where I can get the Dayton signals. If I didn't need a rotor I would give it a shot. Best to stick with a 4 bay or the CM 4248 or U8000 both of which weigh at least a couple lbs. less than the DB8e.
Quote:
Originally Posted by rabbit73
I don't think you can do any better. You need the narrower beamwidth of the 8-bay antenna to separate the weak signals from the strong local signals that are only about 12 degrees away in azimuth.
Antennas Direct DB4e.
I'm surprised that it isn't overloading; according to your report, the preamp AND your tuner should be overloading. Maybe the trees are making the signals weaker.
Those two factors are mutually exclusive. You can have more resistance to overload with less gain or you can have more gain with less resistance to overload, but you can't have more gain with more resistance to overload.
The Antennas Direct Juice preamp has more resistance to overload.
According to your report, WCPO has a signal power of -12.0 dBm and WRGT has a signal power of -91.6 dBm, for a signal dynamic range of 79.6 dB. To that, you must add the minimum required SNR of 16 dB for the weakest signals, which gives a SFDR (Spurious Free Dynamic Range) of 95.6 dB, which is impossible. The best preamp with gain has a SFDR of 81.7 dB. The Mini Circuits ZHL1010 has a SFDR of 92.2 dB, but it only has a gain of 10.4 dB.
If you think your idea will work, why don't you try it?
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