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I would like to find an 8 bay that picks up VHF like your old channel master. What I am going to start with is an HD7698P. I was reading through that thread as well. These are heavy antennas (well built) so horizontal stacking (by the time you got proper spacing with a non-metallic support) would be problematic. I also tried feeding the cables from each 4-Bay section into a 4-Way splitter with very little difference. I had an extra combiner so I ended up feeding the two panels from each HDB-8x into its supplied combiner and then the outputs of each antenna combiners into my extra combiner. I’ve included a lot of test results from when I tried various combinations. 15-1220 and I don’t think it will handle as long of a mast as I’d need to get proper separation.īelieve it or not, I’ve still got a Cushcraft 215WB Boomer that I can’t find a home for. The rotor on the push-up is a 40 year old Radio Shack Cat. When I can get some help lowering the pushup mast I want to mount a ‘J’ pole and move the 4228 down below the rotor. The YA-1713 just gets them sooner and holds on a little longer. Turns out, when propagation is good, they both get 8 & 10 when it isn’t, neither gets them. Worked great for the San Diego UHF stations but propagation had to be good to get 8 and/or 10 so I added a dedicated Hi VHF antenna. When I moved the FM antenna to the OTA tower, it left too much unused mast on the pushup to resist so I mounted the CM-4228.
#Wilson shooting star antenna tv#
That’s in part why the TV tower can be lowered & raised with a winch. I was up there last summer and my wife came out, saw me, and went ballistic. Since I had the tile roof put on I have to climb the tower to work on that antenna. I have a mast mounted 50 ohm coaxial relay (w/’N’ connectors) to switch it between vertical & horizontal polarization. It is turned by a tower mounted Alliance HD-73. My main aluminum crank-up tower supports an 11 meter Wilson Shooting Star that’s been re-dimensioned for 10 meters. When I decided to “play” with OTA I knew it wouldn’t support everything, so built the OTA TV tower. Originally, the pushup mast held the Cushcraft A147-20T 2 Meter beam, Winegard HD-6065 10 Element FM Antenna and rotor. Check out posts #20 – 24 for pictures of my antenna farm. I’m sure you are right, but I’m running out of antenna real estate. Quote: “…both the 2-meter ham antenna and the CM-4228 may be interfering with the YA-1713” Directors for such antennas are shorter than resonance, so could potentially be a good reflectors for upper VHF. It is conceivable that the YA-1713 could be aiding VHF reception for the 4228, and that the 4228 could be disrupting the pattern of the YA-1713.ĭriven elements for 2-meter band ham radio antennas are not far in resonance from VHF-TV (~144 MHz vs 174 MHz). The dimensions of a 4228 reflector are in the neighborhood of resonance at VHF, that is primarily how the 4228 provides gain at VHF. Depending on relative positioning, such an antenna arrangement can, and likely does, affect an upper VHF antenna's gain. Realizing that some people use CM-4228 in close proximity with a VHF antenna. The situation is usually worse when the metal dimension represents something approaching a half-wavelength at the frequency of interest. From the image in your last photo, both the 2-meter ham antenna and the CM-4228 may be interfering with the YA-1713.Īny metal inside an antenna's aperture can affect gain and pattern.
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The YA-1713 accepts signals from a surrounding region of space (aperture). Whereas the return bandwidth is lower than ordinary TV signals, in the range of 5-42 MHz.Ībout your earlier comments regarding VHF reception of YA-1713 compared to CM-4228: Normally, the forward bandwidth covers the CATV range 54-1,000 MHz.
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Note: Previously, you mentioned concern about drop amplifiers being bi-directional. Maybe this gain imbalance is necessary to have usable signals from the VHF/UHF side, if so then the PCT MA2-M suggestion above may not help because of the lower UHF gain of the PCT MA2-M (relative to the AP-2870). In your current configuration ( last image in previous post), the gain on the CM-4228 side is less than the VHF/UHF combined side. ĬM-4228 > HDP-269 > / Most UVSJ (Pico & Holland & some others) will pass DC through the VHF side. UVSJ > HDB8X Combiner > Power Inserter >.