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            TV Antenna Questions Page Two


TV Antenna questions index
Find what you're looking for faster.


Question: I have a TV antenna about 10 years old, have quit Dish, and want to get local channels, but am having rotten luck. I have a mast, the 3 legged kind about 30" high. I bought a new antenna rotor from Radio Shack, because the previous one was a mass of rust. No signal on my little 19", think it is set up for analog, and believe I need digital? Is the TV antenna able to receive digital signals/Do I need a special digital TV antenna/Do I need special coax/About 80 miles from Tampa, Orlando, Fort Myers, and West Palm Beach. Planning on using Roku for other than so-called local channels. Have had it with Comcast, Direct and Dish, they just gouge people.

Answer: You will need a digital TV tuner for your older TV. You have two choices. Either a set top converter box that converts the digital signal received by the TV antenna to an analog signal that your older TV can receive. The second option is to purchase a new TV with a built-in digital tuner. The truth is digital TV antennas and digital coax cable do not exist. However, some antennas perform better than others because of size and frequency tuning and some coax cable performs better than other cables. But neither the TV antenna or the coax cable is digital specific. My advice is to get a digital tuner in operation or buy a new TV and connect it to the TV antenna and see what you receive. If the TV reception is good the job is done. If it's not good contact us so we can discuss what may be needed to improve the TV reception. During the set-up of the set top converter or the new TV with digital tuner you will need to run a channel scan via the menu of the digital converter box or the new TV. 

 

Question: I'm about to purchase your HD Stacker antenna. My friend has one and it works great. I have a metal roof and don't want to put any holes in the metal so I want to use the eave mount you sell. The roof peak on the north end of my house will use about 40 feet less coax cable to get to the TV than if I install on the south peak. The only problem is the main electric service power lines come into the house just below the north peak. Will the power lines effect the TV antenna reception? If so how much? Would I be better off installing the antenna on the south peak with 40 feet of additional coax cable?

Answer: Never install a TV antenna near power lines!!! The power lines will have little effect on the TV antenna reception but it's very dangerous. More people are injured or killed when installing a TV antenna by electrical shock than by falling. Not only is it dangerous when installing the antenna it's dangerous after the fact. In the future if the antenna were to fall onto the power lines it could send "killer" electricity into your house to the TV via the coax cable. Install the TV antenna on the South peak away from the power lines. If need be you can compensate for the additional length of coax cable by using a mast mounted TV antenna preamplifier.  

 

Question: I have a 40-50 foot high house and would like to put a tripod and a TV antenna on the house. The antenna would then be the highest point for about 200 yards or so.

1. Does having the tripod and TV antenna increase the likely hood that my house will be struck by lightning?

2. Does increase the likely hood if the tripod is grounded (such as running a wire to ground from the top of my house)?

3. Or alternatively does a ground wire "decrease" the likely hood that that the TV antenna structure will get struck by lightning?

Answer: Having an ungrounded tripod and TV antenna will slightly increase the chances of a lightning strike. Having a properly grounded TV antenna and tripod doesn't decrease or increase the chances. It's more like not having the TV antenna and tripod on the roof at all. Remember you should ground the coax cable in addition to the antenna tripod.
See #4 & #5 on this page. http://dennysantennaservice.com/tv-antenna-system-installation-.html

 

Question! I'm getting ready to order a TV antenna from your company. Before I do I have a question. Does grounding the antenna improve the TV reception?

Answer: It some rare case it may help the reception a little but usually it does not. The purpose of grounding the TV antenna system is mainly for user safety.  Grounding will help reduce the damage and the chance for fire if the TV antenna were struck by lightning. Grounding also helps reduce the chances that the TV antenna will be struck by lightning. In a nutshell it is always best to ground all outdoor TV antennas.

 

Question: I have a 8 bay bow tie TV antenna hooked up in my attic. I live 10 to 15 miles from the TV towers yet my digital reception goes in and out at night. I have a Blonder Tounge preamplifier hooked the the TV antenna. My signal strength is 100% in the day and 72 to 78% at night. All cables are inside and the TV antenna is vertically mounted. It does have to shoot through two Walls and the roof to get a signal. Would I have better luck pointing the TV antenna upwards through the roof instead of vertically or do I have to mount it outside?

Answer: It's kind of strange that the TV signals only give you trouble at night. I'm not sure but it's possible that the signals at night are over driving the preamplifier. In other words, if the signal is 100% during the day they may actually become too strong at night for the TV antenna preamplifier and the preamplifier is over driven and begins to malfunction. I would try bypassing the preamplifier and run directly from the TV antenna directly to the TV bypassing the preamplifier.

Reply: Wow, My signal strength went from 70 to 72 on all stations to 100% when I took the preamplifier out tonight. I will see what happens during the day tomorrow.
 

Question: Denny, I am planning on dumping cable in favor of a TV antenna. The cost has gotten ridicules and I'm ready for free TV. I'm leaning towards the HD Stacker antenna. I've done a lot of research but I'm still confused on one issue. I've read about VHF and UHF TV signal but I still don't understand the difference and do I need a VHF and UHF TV antenna at my location?I live at _________ Ave. Inglewood (Los Angeles) Ca.

Answer: Like most locations in the U.S. there are both VHF and UHF TV stations in Los Angeles. You will need a VHF/UHF TV antenna. The VHF signal band is channels 2-13 and the UHF band is channels 14 and up. TV antennas are tuned to receive certain TV signal frequencies. If you were to use a VHF TV antenna it's size and shape would not be good to receive the UHF signals and a UHF antenna wouldn't be very good to receive the VHF signals. That's why in most areas of the Country a combination VHF/UHF TV antenna is required. It's all about antenna design when it comes to receiving VHF and UHF signals. BTW. According to the reception data the HD Stacker is overkill for your location. I suggest you save yourself a little money and go with the EZ HD antenna. The EZ HD antenna is a VHF/UHF antenna and should easily provide a strong reliable signal at your location.



Question: How critical is it to have the ground wire spaced from the antenna coaxial cable? I currently have the TV antenna coax and the ground wires going through one hole in the chimney from the antenna, they travel through the attic and come out one hole in the wall. Where the ground wire is attached to a grounding rod & the coax cable plugs into the splitter.

Answer: The ground wire and the TV antenna coax cable should be kept separated by a foot or two. The TV antenna ground wire should never run into the house. It should be kept on the outside. If the antenna were struck by lightning I think it may be better to have no ground at all than to run the ground wire into the house. 

 

Question:  Can the range of the EZ HD antenna be extended with a mast amp? (preamplifier)

Answer:  Not really. A preamplifier won't extend the range of any antenna. However, using a preamplifier will many times appear to extend the range of the TV antenna. A preamplifier cannot produce a signal that the TV antenna is not already receiving. What a preamplifier does is amplify the signals the antenna is receiving and compensates for the signal reduction caused by the coax cable length between the antenna and TV. Another signal reducer is a signal splitter. In other words, if a weaker "usable" signal is being received by the TV antenna it can be lost by the time it travels the coax cable length to the TV. Installing a preamplifier can boost the signals and compensate for any signal loss between the antenna and TV appearing to give the TV antenna better range.

TV antenna range is a rule of thumb. We state 50 mile range on the EZ HD antenna. However, if the the terrain is wide open between the receiving TV antenna and the broadcast antenna or if the TV antenna is installed unusually high above ground the range will increase. On the other hand, if the terrain is hilly or heavy forest is in between the broadcast antenna and the receiving TV antenna the range may be reduced. Another factor is the output signal power of the TV station itself and the height of the broadcast antenna. Not all TV stations broadcast the same signal power output. The broadcast range of one TV station to another can vary significantly.


Question:  Why does satellite TV work better at 2,000 miles than a TV antenna at 40 miles? 

Answer:  TV signals from satellites travel through about 21,990 miles of outer space and about 10 miles of the Earths atmosphere. Signals in space can go on almost indefinitely while signals traveling through the Earths atomoshere degrade rather quickly comparatively. The satellite signal has an unobstructed line of sight view directly from the satellite to the receiving dish antenna on Earth. Broadcast TV antenna signals must travel through whatever lies between the broadcast antenna and the receiving TV antenna such as hills, trees, buildings etc... Another factor that limits the distance a TV antenna can receive a signal is the curve of the Earth. Back in the earlier days of television it was impossible to watch live TV from one side of the Earth to the other side because of the curve of the Earth. Signals will not travel through the Earth. Today we have satellites that can receive an up link from a broadcast on one side of the Earth and send it back down to the other side of the earth. Sometimes more than one satellite is involved. Today it's possible to watch a live TV broadcast from anywhere in the world because of satellites.

Go to: TV antenna questions page 3

 

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