Motorola has one thats 12 db. for $10 . Another brand is 20 db for
$18. Theres a bunch of specs on the back of both..but i have no idea
what they mean. When buying one, what do u want in one when price is
really secondary ? Looking for a clearer picture from distant tv
signals. Thanks .
Since you say "distant signals" I assume you are using a TV antenna, not
I don't think you'll successfully remove much of the "snow" from distant
signals with an amplifier.
What they are good for is boosting up a cable signal which you are going
to then split into several long runs throughout a building.
Just my .02, but you might consider buying one in the right place,
trying it for a night, and returning it the next day for a refund if it
doesn't help any.
It probably won't, since to be affective an amplifier needs to be
installed at a point where the signal is clean.
Yes, where the amp comes BEFORE the signal loss. I do use one in my
cable distribution system. It's fed from a good cable TV signal and is
to compensate for the loss caused by having several loads. It would
not help if I had a noisy signal coming in.
How do you receive the signal, with external antenna array on a tower or
little rabbit ears indoor? Signal amp. boost signal as well as noise
level. Theory wise betwee 12db and 20db is very different since db is
exponential expression. 3 db is 2 times. If I were you I'd improve
antenna, if you must use amp, it better be mounted on the mast, not at
the TV end. Power to the amp can be fed thru coax.
Also I hope what you're trying to receive is digital, because NTSC is
scheduled to be turned off in Feb 2009. Not sure how much good an
amp will do with ATSC, as it's digital and you either have a perfect
picture or big break ups, not the usual snow, ghost, etc issues.
Yes, it's still RF. But my main point was that if he's trying to
improve an analog signal, it may not be worth the trouble as it's
going to be gone in a year. I'd be figuring out how to transition to
ATSC first, as that may solve his problem. The reception conditions
he has for digital may be different.
On Nov 16, 9:06 am, email@example.com wrote:
You miss the point. In a year the analog will be gone and with ATSC
his reception right now may be fine WITHOUT needing an AMP. Anyone
screwing around with improving NTSC reception should take that into
nope, if your analog sucks, so will your digital
If you get a viewable analog signal clear to slightly snowy, it will be
good enough for a digital signal. If you get an unwatchable analog
signal, your digital will blink out or not lock up
I use a remote style, amp is out at antenna with a plug in box closer to
the tv, works great
So, when did you see what his TV looks like that you know it isn't
just slightly snowy? How do you know which band ATSC is on in his
area? Is it UHF or VHF? For all you know, he has an old crappy
VHF antenna and ATSC is UHF in his area, which means what he's
experiencing now has little relation to what he will have when he
transitions to ATSC.
And BTW, an amp won't fix a signal to noise ratio problem.
On Fri, 16 Nov 2007 06:49:51 -0800 (PST), firstname.lastname@example.org wrote:
You miss the point. With a distant weak broadcast that shows much
snow but is still viewable in NTSC his ability to receive that same
weak broadcast in ATSC will be less. ATSC will work with a lower
signal to noise ratio than NTSC but it has a minimum requirement
before it suddenly stops working. NTSC is different. It slowly fades
On Nov 16, 11:12 am, email@example.com wrote:
You're making assumptions. The OP never stated how much snow he had,
exactly how weak the signal is, or even if it's VHF, UHF or both that
he has a problem with. If he's watching just VHF, his reception
could be different going to ATSC because in most areas it's in the UHF
band, while existing major broadcasting is in VHF. And if he's got
UHF with a bit of snow, ATSC could work just fine. ATSC has error
correction, so it can produce a complete picture, even with some
signal noise, where as with NTSC it appears as snow.
ATSC will work with a lower
NTSC is different. It slowly fades
Exactly my point. If he has a picture with some snow, ATSC could
solve his problem and with the demise of NTSC, he has to do something
about it in another year anyway. Also, an amplifier is not going to
solve a signal to noise ratio problem. It just amplifies the total
signal, noise included.
What's the problem with addressing the conversion to ATSC before
screwing around with a system that is going away in a year?
On Fri, 16 Nov 2007 09:30:15 -0800 (PST), firstname.lastname@example.org wrote:
"Looking for a clearer picture from distant tv signals. Thanks ."
I assume he must be seeing enough snow to bother posting.
Maybe he doesn't want to wait. Maybe he wants to gather some
info about what to expect.
So you are telling him his snowy "distant tv signal" will magically
clear up. I'm telling him that his former snowy picture will start to
cut up unless he changes something.
On Nov 16, 4:11 pm, email@example.com wrote:
Wait for what? ATSC is up and running now. All I'm suggesting is
before spending time and money trying to fix NTSC reception, he should
at least be aware that it's going bye bye in a year.
I never told him his reception will magically clear up. However,
depending on the location, it is possible he could receive ATSC OK and
since he's going to have to do that in a year anyway, moving to
digital now is an option. I've seen people online report that their
reception improved and they have good reception with ATSC, where
before they had snow, ghosting, etc..
And IMO, it's unlikely buying an amplifier is going to do any good.
He's in a mobile home with probably a 10 ft cable from the antenna to
the TV, not in a big house with 5 TV's. If the signal from the
antenna was any good with decent SNR he should be able to receive it
on a single set.
REPLY: Everyeone, Thanks. ITs a crankup outdoor roof mounted
Wineguard Antennae on my RV for VHF tv stations. Inside, there is a
red button which i press that feeds 12 vdc power into the coax
cable ...so....i assume THIS is the amp which came with the unit
(??). How can i pull in weak signals, better, with what i have ?
On Thu, 15 Nov 2007 16:48:28 -0800 (PST), IbeDavid
Amplifiers for antennas only work when they are mounted at the
antenna. Quality amps will be weather proofed and have an optional
FM trap that can be switched in if you have a local FM station that
could interfere with channel 6.
Amplifiers other than what is used on an antenna would only makes
sense if you were going to split the signal multiple times.
12 db or 20db makes no difference. If 12db isn't enough then something
is very very wrong in your set up.
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