The OP is going to have a digital 8 from one direction and a digital 9 from another, and the 9 will be stronger? This may prove to be easy. It could be that a simple dipole will receive both. I receive a digital 42 from one direction and a digital 43 from 160 degrees away, so I took the backscreen off a Channel Master 4-bay bowtie and then put a 42-43 bandpass filter on the output and I integrate that signal pair into a master antenna system that serves a 100+ unit, ten story condominium.
If those are the only two VHF highband (7-13) channels, then one can filter them for combining with the lowband (3?) and UHF by "filtering" them using the high side of a Hi-lo combiner (HLSJ) and the low, or VHF, side of a UVSJ. Those are three dollar parts.
You can probably accomplish the same thing using a channel 8 Jointenna. The adjacent channel filtering of a VHF highband Jointennas results in a relatively gentle slope, probaly less than ten dB, across the adjacent channel. That much slope would kill NTSC analog picture quality but will not kill a healthy digiital signal. But if they are the only two VHF high channels, the HLSJ, UVSJ filtering is best. VHF Jointennas are not tunable, whereas UHF Jointennas are tunable.
As far as using the XUV heterodyne converters are concerned, you will not believe how much out of band noise they generate. I mean, it is incredible. I set up one to convert a UHF signal to channel 3 and another to channel 6 (I can field tune them with my spectrum analyzer), and the channel 6 converter's output put a ton of visible interference on an analog 2 house channel. I had to put a bandpass filter with about 50dB of depth on that output to salvage the availability of channel 2.
Also, the XUV inputs can only be tuned to UHF channels. How strong does TV fool say the post transition digital channels 8 and 9 will be?
If those are the only two VHF highband (7-13) channels, then one can filter them for combining with the lowband (3?) and UHF by "filtering" them using the high side of a Hi-lo combiner (HLSJ) and the low, or VHF, side of a UVSJ. Those are three dollar parts.
You can probably accomplish the same thing using a channel 8 Jointenna. The adjacent channel filtering of a VHF highband Jointennas results in a relatively gentle slope, probaly less than ten dB, across the adjacent channel. That much slope would kill NTSC analog picture quality but will not kill a healthy digiital signal. But if they are the only two VHF high channels, the HLSJ, UVSJ filtering is best. VHF Jointennas are not tunable, whereas UHF Jointennas are tunable.
As far as using the XUV heterodyne converters are concerned, you will not believe how much out of band noise they generate. I mean, it is incredible. I set up one to convert a UHF signal to channel 3 and another to channel 6 (I can field tune them with my spectrum analyzer), and the channel 6 converter's output put a ton of visible interference on an analog 2 house channel. I had to put a bandpass filter with about 50dB of depth on that output to salvage the availability of channel 2.
Also, the XUV inputs can only be tuned to UHF channels. How strong does TV fool say the post transition digital channels 8 and 9 will be?
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