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Topic ClosedInverter and tv - Event Date: 07 Sep 2017
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JandL View Drop Down
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Posts: 364 		Direct Link To This Post Calendar Event: Inverter and tv
    Posted: 13 Sep 2017 at 10:24am
I could not remove the top to my new antenna Winegard RoadStar RS-3000 to look. But In the installation manual it says,

Do not install couplers, splitters, etc.
between the power supply and the
antenna. Installation of any item on
the downlead may cause a short in the
system. The downlead supplies +12
VDC to the preamp in the antenna.

My old antenna was an RS-1500 and in it's manual it has a similar note
JandL
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GlueGuy View Drop Down
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Posts: 2628 		Direct Link To This Post Posted: 13 Sep 2017 at 9:35am
Originally posted by JandL

From the Wineguard

RV WALL PLATE/AMPLIFIER
Wall plate/amplifier amplifies VHF/UHF TV
signals received by non-amplified Winegard
RV antennas with outdoor receptacle for TV set
and cable input. Wall plate/amplifier provides
a satellite F-jack as well as antenna signals to
two TV sets. Cable input from outdoor receptacle
connects to wall plate and may be switched so
either antenna or cable signals may be watched.

amplifier schematic
(You have to page down to get to the schematic. I wish you could post stuff like you could before)

As can be seen in the schematic there is 12 volts going up to the antenna but the received single is not boosted till it gets to the PC board, item 210 VHF/UHF Amplifier.
Ah. The thot plickens. If the wall plate sends 12V to the antenna (and it does according to the schematic), that means there are active components in the antenna. This is not unusual; the antenna/booster we use at home has the same scheme. The idea is to boost at the antenna/de-boost at the TV to reduce losses in the cable.
bp
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JandL View Drop Down
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Posts: 364 		Direct Link To This Post Posted: 12 Sep 2017 at 12:08pm
From the Wineguard

RV WALL PLATE/AMPLIFIER
Wall plate/amplifier amplifies VHF/UHF TV
signals received by non-amplified Winegard
RV antennas with outdoor receptacle for TV set
and cable input. Wall plate/amplifier provides
a satellite F-jack as well as antenna signals to
two TV sets. Cable input from outdoor receptacle
connects to wall plate and may be switched so
either antenna or cable signals may be watched.

amplifier schematic
(You have to page down to get to the schematic. I wish you could post stuff like you could before)

As can be seen in the schematic there is 12 volts going up to the antenna but the received single is not boosted till it gets to the PC board, item 210 VHF/UHF Amplifier.

JandL
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TheBum View Drop Down
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Posts: 1407 		Direct Link To This Post Posted: 12 Sep 2017 at 11:06am
The only time the booster absolutely must be turned off is if you want to watch cable TV. Since we trickle charge in storage, we just leave it on.
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mcarter View Drop Down
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Posts: 3419 		Direct Link To This Post Posted: 10 Sep 2017 at 5:13pm
I have never had my Pod receive better with the amp off. And it always increases the number of channels I receive. Never.
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eye95 View Drop Down
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Posts: 63 		Direct Link To This Post Posted: 10 Sep 2017 at 3:35pm
Not everything comes in better when boosted.

I have a booster on my antenna at home. It is attached to a plug that I can turn on or off from my iPad. Sometimes it has to be turned off to receive some channels.
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GlueGuy View Drop Down
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Posts: 2628 		Direct Link To This Post Posted: 10 Sep 2017 at 10:09am
Originally posted by mjlrpod

Call it what you will, this much is for sure. 
1. There is an on and off switch for the antennae booster. 
2. Everything comes in better when it is turned on. 
3. If you leave the antennae booster on when you disconnect from shore power, your battery will be dead fairly quickly.
Good point. Who cares what is and isn't powered. It consumes power.
bp
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mjlrpod View Drop Down
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Posts: 1214 		Direct Link To This Post Posted: 10 Sep 2017 at 9:55am
Originally posted by TheBum

Originally posted by GlueGuy


Originally posted by Tars Tarkas

Actually, the antenna does have a 12v amplifier that can be turned off or on.TT
That's what I thought. It's a power amp that runs 12V over the coax to the companion on the antenna.


No, it just boosts the signal coming over the coax. The antenna still outputs unamplified RF.


Call it what you will, this much is for sure. 
1. There is an on and off switch for the antennae booster. 
2. Everything comes in better when it is turned on. 
3. If you leave the antennae booster on when you disconnect from shore power, your battery will be dead fairly quickly.
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mloerzel View Drop Down
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Posts: 7 		Direct Link To This Post Posted: 08 Sep 2017 at 9:46pm
I use this one, because it's Pure Sine Wave (better for sensitive electronics). I installed a 12v Outlet next to the fuse box.
Life is Too Serious to be taken Seriously
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TheBum View Drop Down
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Posts: 1407 		Direct Link To This Post Posted: 08 Sep 2017 at 1:34pm
Originally posted by GlueGuy


Originally posted by Tars Tarkas

Actually, the antenna does have a 12v amplifier that can be turned off or on.TT
That's what I thought. It's a power amp that runs 12V over the coax to the companion on the antenna.


No, it just boosts the signal coming over the coax. The antenna still outputs unamplified RF.
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