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Posts by rabbit73

There are three types of preamp or tuner overload, in order of increasing signal strength:1. The strong signals cause enough IM distortion to interfere with the reception of weak desired signals. This is the point that holl_ands uses in his preamp charts to obtain max SFDR (Spurious Free Dynamic Range). No damage will happen.2. The strong signals cause overload to the preamp or tuner that makes it impossible to receive any signals. No damage will happen.3. The signals are...
The hoverman can be scaled to any frequency you want. The size is inversly proportional to frequency and directly proportional to wavelength. A hoverman for your frequency range would be about half the size of a hoverman for UHF TV. What advantage do you think the hoverman would give you over the yagi?Nothing wrong with thinking outside the box; that's how new inventions are created!
Your signals are extremely strong. The first two listed have the dBm pwr in red which indicates possibility of overload. Try an attenuator in series with the antenna coax coming to the tuner to see if that helps. If it does, leave it in and/or try an RCA ANT751 which is a small antenna for strong signal areas. Your coax should be grounded with a grounding block in such a strong signal area. It also should be grounded to comply with NEC safety requirements.
You're welcome. I grew up in NJ, near New Brunswick.I think it would be difficult to block it out with a wire mesh shield when your antenna is on the roof, which is why I mentioned the test in the attic to confirm the idea. A large piece of cardboard on the roof would act like a sail.That sounds like a good deal to me; you must already have FIOS for another service.We pay $25 for basic cable from Cox, which gives us a mixture of analog and digital signals.
retiredengineer in post #23 has make a good point. When you replaced the CS5 with the ant751 in the attic you said that CH7 improved. Since the 751 probably has a more narrow horiz beamwidth than the CS5, that seems to confirm his suspicion that CH8 is causing adjacent channel interference to CH7. Notice the little red a beside CH7 in your tvfool report. If your antennas were still in the attic, I would have suggested that you cover a large sheet of cardboard with...
Thanks for the update; I missed that with my initial analysis of your reception problem. Yes, tvfool doesn't have it yet. After a little more searching I found that the repeater (I also call it a repeater, and so do hams, but the FCC calls it a translator) has a new callsign: K31KE-D. I found more info on wiki:http://en.wikipedia.org/wiki/KEYT-TVScroll down to Rebroadcasters to find it.Rabbitears.info also has...
What have you been using to watch tv between then and now?Yeshttp://www.amazon.com/Mohu-Leaf-Paper-Thin-Indoor-Antenna/dp/B004QK7HI8YesWould your wife like a picture frame antenna?http://www.amazon.com/Antennas-Direct-PF7-Picture-Antenna/dp/B000N8NDX0http://www.antennasdirect.com/store/PF7_antenna.htmlYou will need to try different locations for the best results. It might be necessary to add an extension coax with an F81 coupler.
It's not too critical. Look how close they are in the 4221HD and the DB8:http://www.google.com/search?q=4228hd&hl=en&tbm=isch&tbo=u&source=univ&sa=X&ei=gVoyUe2dAbTy0wHVzYCIDw&ved=0CF4QsAQ&biw=1001&bih=569http://www.google.com/search?q=db8+antenna&hl=en&tbm=isch&tbo=u&source=univ&sa=X&ei=zVoyUZ2PAe2D0QHCm4DACQ&sqi=2&ved=0CEwQsAQ&biw=1001&bih=569When the two arrays are that close, there is a slight loss of gain because the two apertures of the arrays overlap causing a...
Oh, OK; then you don't have to buy it! The point I was trying to make was that you don't need 4 gauge for the fan-dipole whisker elements of a conventional 4-bay antenna; 8 gauge copper or aluminum (1/8") is thick enough. If you are going to make straight elements then 4 gauge isn't thick enough; you would need tubing or flat strips. The 4-bay collinear antenna array is a very broadband antenna, but it needs fan-dipole whisker or very fat straight elements to cover from...
Welcome to the forum darryle. If you want to build instead of buy, 4 gauge is overkill. Changing the whisker length without changing the vertical spacing between the bays is not a good idea; they must be changed in unison to stay in phase: http://www.digitalhome.ca/forum/showthread.php?t=154177&page=5
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