View Poll Results: TV Antenna - Would you replace or remove it?
Replace it? 26 61.90%
Remove it? 16 38.10%
Voters: 42. You may not vote on this poll

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Old 07-17-2008, 10:39 AM   #15
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Well, I can answer some of that for you.

First of all, the new digital TV signal will be in practically the same part of the spectrum as before. If you look at a freq allocation chart, DTV is listed in all the same areas of the spectrum as old analog TV. So neither VHF or UHF broadcasts are really going away. The type of signal will change from analog to digital.

My old antenna, the original Skyliner that came with the camper, works quite well for old style analog TV, new digital TV and FM radio (haven't tried AM radio on it).

Some folks have had problems with the aluminum underneath antenna mounts going south on them and "rotting" or corroding away. I got lucky and didn't have these problems so I chose to restore the antenna and keep it.

Hope that helps a bit.

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Old 07-17-2008, 10:54 AM   #16
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Quote:
Originally Posted by Distantdrummer View Post
Whats actually going away VHF or UHF or both or just what?

Lets assume that it is after the Feb.2009 deadline. (personally I bet they delay that a while anyway). Is the 70's era antenna useless or not? For TV reception I'm speaking here, not for hanging panties out.
Mind you, this is for "over the air TV only. Sat and cable are not changing.

What's happening is that the format of the broadcast signal is changing from analog to digital. The tuner in your old TV is an analog tuner, and will not translate the over the air digital signal. In order to use your old TV for over the air, you will need a digital to analog converter box.

As far as your antenna, if it currently works for UHF signal, it will work for the new digital signal as well. The original antenna on our '65 Caravel works just fine with our new HDTV. It gets both analog and digital perfectly, and has for 1 1/2 years. Most stations in larger areas are already broadcasting digital as well as analog. It's here now. The problem is not the antenna, it is the tuner in your TV.

As far as a delay, don't bet anything you are fond of. It's going to happen next February. The FCC has already allocated the analog frequencies for other use. It's a done deal.
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Old 07-17-2008, 11:01 AM   #17
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the base of the skyliner is not cast aluminum; its pot-metal.

vhf/uhf is not the issue; the signals that TV stations send are "RF". its still "radio waves". its WHAT those waves of energy contain that will change.

the way it works now, on the most basic level, is really very similar to the old "tin can & string" toy you made as a kid.

The "new" method involves a computer on both ends of the system. At the transmitter, the picture and sound are converted into a series of zero's and ones. Those 0's and 1's are sent via radio waves. computer on the receiver picks up those 0's and 1's, and coverts them into a picture that shows up on your screen.

but again, what is sent across the air-waves is still a radio signal...still in the "vhf" band, and as such, your existing vhf antenna will pick up the signal. your tv won't know what to do with it, unless its a new "digital" tv...or unless you add a "computer" (converter box) that will make the translation for you.
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Old 07-17-2008, 11:15 AM   #18
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Chuck,

Thank you for that simplified explanation. Even I can understand that.
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Old 07-17-2008, 12:51 PM   #19
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I recently removed the old broken Skyliner from my Caravel, and patched the hole. It WAS the source of my leaks, and the trailer looks more streamlined without the antenna.
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Old 07-17-2008, 01:31 PM   #20
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My Batwing with pre-amp works great on all the UHF channels. I would replace.
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Old 07-17-2008, 05:41 PM   #21
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Quote:
Originally Posted by Distantdrummer

Why as someone above stated would the aluminum be "rotted" away under the mounting flange? The flange is aluminum too is it not?
I do not recall ever reading about erosion around or under the antenna mounting flanges. But there's alot I don't know.
I have a picture of the underside of our skyliner, inside the trailer. The rotted aluminum skin is very obvious in the photo, the aluminum will corrode away before the pot metal antenna base.
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Old 07-17-2008, 08:28 PM   #22
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Quote:
Originally Posted by Distantdrummer View Post
Lets assume that it is after the Feb.2009 deadline..........the 70's era antenna useless or ........for hanging panties out.
Now you've done it! Now that might wife realizes that is good for something useful she won't let me remove it.
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Old 07-17-2008, 09:29 PM   #23
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Nice thread

Hello again everyone, I removed mine on my 71 safari and wished I had left well enough alone. I posted in parts needed and had a forum member reply and offer an antenna for replacement. I cant wait to install it. I am wandering if I can convert to coax and use the old 2 strand to pull the new coax with and if I can infact change it at the antenna. Thanks Robert
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Old 07-17-2008, 09:56 PM   #24
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All over-the-air TV broadcasts, analog or digital, are sent through the air by TV stations transmitting energy waves in an assigned specific frequency range band for that service.

Analog TV and Digital TV signals are broadcast on frequencies that are very close together. So close together that older analog TV antennas will receive digital TV signals just fine, as long as there are not mitigating factors such as mountians, lowlands, or obstructions that block the signal.

The biggest difference receiveablilty factor between the older analog TV signals and the new digital TV signals is that stations will stop broadcasting the analog signal in 2009.

If you have an older TV, it will not receive the new digital signal without a seperate digital receiver box.

If you have an older over the air antenna, hooked to a newer digital TV, you will be fine, as long as you are not to far from the transmitting tower.

After 2009, old TV, old antenna, no reception

After 2009, old TV, Converter box, old antenna, good reception

After 2009, new digital TV, old antenna, good reception

After 2009, new digital TV, Dish/Direct TV, good reception
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Old 07-17-2008, 11:32 PM   #25
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Arrow

Thanks to all for the TV signal / reception explanations.
I am told that there are no such things as 12 volt converter boxes and none are in the works. This seems so strange that some company doesn't fill that need. Or is there some reason the technology won't work with batteries?

Terry;
I see what you mean about the corrosion. I guess the dis-similar metals are the culprit. Why in the world did the factory not see that coming...?
Could you please ID the items in your picture. What is that horizontal angle with the holes in it up there in the attic? I'm guessing it is reinforcement, but what is it attached to? and did you put it there or the factory? Is there a matching one on other side of area also?
Also what are the two "rods" in the center under the roof? I guess one is the crank link is the other one romex? Where is the 300 ohm cable?
Did you remove the center ceiling panel all the way front to rear? I know it is a one piece sheet.
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Old 07-22-2008, 08:39 PM   #26
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Quote:
Originally Posted by Distantdrummer
Terry;
I see what you mean about the corrosion. I guess the dis-similar metals are the culprit. Why in the world did the factory not see that coming...?
Could you please ID the items in your picture. What is that horizontal angle with the holes in it up there in the attic? I'm guessing it is reinforcement, but what is it attached to? and did you put it there or the factory? Is there a matching one on other side of area also?
Also what are the two "rods" in the center under the roof? I guess one is the crank link is the other one romex? Where is the 300 ohm cable?
Did you remove the center ceiling panel all the way front to rear? I know it is a one piece sheet.
The items in the photo are the logitudinal main bows, they run front to back the length of the roof. The rod is the crank for the new batwing antenna. We installed a piece of aluminum skin directly over the old corroded piece after cleaning most of the crap off. This was done shortly after we got Bertha, and I was not allowed on the roof. It has worked well, and I have decided since it works, and doesn't leak, I won't mess with it.
The cable you see is 75 ohm coax for the new antenna, I removed the center panel back to the bedroom. I had some trouble getting it back in its channel by myself, and the panel has a couple of ripples in it. A helper would be a must to do this without having this happen. The 300 ohm cable was completely replaced, and a new amplifier with cable input and antenna/cable output to two tv's was installed when I had the anel down.
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Old 07-22-2008, 08:52 PM   #27
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I would replace it. With a newer more low-profile antenna.I'm told that the old antenna will receive digital sigs just fine but you will need the box.
Thanks for the tip on LG Howie.
Roger
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Old 07-23-2008, 10:17 PM   #28
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Outer skin corrosion

The AS skin is a clad aluminium, just like we used in designing fighter aircraft. In the aircraft industry, we always coated aluminium castings with zinc chromate as a finish.
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