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Radio Shack 15-2507 High -Gain Signal Amplifier (Review)

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Old 04-16-2009, 08:34 PM   #1
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Default Radio Shack 15-2507 High -Gain Signal Amplifier (Review)

Specs..Radio Shack calls it Technology on the box..

Boosts signals by up to 30db while minimizing interference.
Ideal for distributing TV or HDTV signals to a remote location.
Adjustable gain control provides up to10db reduction of signal to prevent overload.
Automatic protection circuit guards against cable shorts and prevents damage to connected receivers.
Outdoor amplifier mounts on antenna mast.
FM trap 20db at 98MHz.
Gain typical 30db vhf/uhf.
Gain control 0 to 10db cut.

I tested my CM Spartan (mid) 1990s flat wire input pre-amplifier and it worked, just by unplugging the AC to the power supply, then plugging it back in and seeing the difference in the TV reception....and it was working..Then I removed the CM and replaced it with the 15-2507 and I hooked it up to my old antenna ,then turned on the TV. I noticed a huge difference in the analog TV quality. Then I hooked up the new amp to the new HDTV friendly antenna and got my first digital (clear as a bell) TV reception. This not a scientific study because I didnt test any of the newer production amplifiers, but I dont regret this purchase because I have been able to watch the free digital signals 97.9 percent of the time. There is no way that I will be able to have LOS in my area..I think that most of the signals I am receiving are from refraction...But I dont care...it working!. Tonight they are going to stop transmitting all analog signals in my area.... My question is... whats a analog signal


Mike
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Old 04-17-2009, 02:46 AM   #2
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As a technology, analog is the process of taking an audio or video signal (in most cases, the human voice) and translating it into electronic pulses. Digital on the other hand is breaking the signal into a binary format where the audio or video data is represented by a series of "1"s and "0"s. Simple enough when it's the device—analog or digital phone, fax, modem, or likewise—that does all the converting for you.
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Originally Posted by Small Engine View Post
Specs..Radio Shack calls it Technology on the box..

Boosts signals by up to 30db while minimizing interference.
Ideal for distributing TV or HDTV signals to a remote location.
Adjustable gain control provides up to10db reduction of signal to prevent overload.
Automatic protection circuit guards against cable shorts and prevents damage to connected receivers.
Outdoor amplifier mounts on antenna mast.
FM trap 20db at 98MHz.
Gain typical 30db vhf/uhf.
Gain control 0 to 10db cut.

I tested my CM Spartan (mid) 1990s flat wire input pre-amplifier and it worked, just by unplugging the AC to the power supply, then plugging it back in and seeing the difference in the TV reception....and it was working..Then I removed the CM and replaced it with the 15-2507 and I hooked it up to my old antenna ,then turned on the TV. I noticed a huge difference in the analog TV quality. Then I hooked up the new amp to the new HDTV friendly antenna and got my first digital (clear as a bell) TV reception. This not a scientific study because I didnt test any of the newer production amplifiers, but I dont regret this purchase because I have been able to watch the free digital signals 97.9 percent of the time. There is no way that I will be able to have LOS in my area..I think that most of the signals I am receiving are from refraction...But I dont care...it working!. Tonight they are going to stop transmitting all analog signals in my area.... My question is... whats a analog signal


Mike
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Old 04-17-2009, 09:35 AM   #3
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Thanks szdpe.
I would like to add that the 15-2507 did come with everything I needed to hook it up, including the adaptor at the antenna to convert the tv signal over to shielded cable then the cable to the pre-amp and so on... It did not come with a long enough cable to the power supply tho, but I was able to use my old one. There are alot of mixed reveiws on this 15-2507...you can go to the Radio Shack website and read them. alot of people that bought this amplifier posted that it is very easily damaged by nearby lighting stricks and not just by direct hits. I'm going to reread my instruction manual and make sure I have it grounded properly.

I'm giving this amplifier a Two Thumbs Up ...only time will tell if it holds up.

Mike
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Old 04-17-2009, 11:10 AM   #4
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Make sure you mount this on the box of cabinet and don't lay it on top of a rug or on a floor either.
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Old 04-17-2009, 11:43 AM   #5
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Quote:
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Make sure you mount this on the box of cabinet and don't lay it on top of a rug or on a floor either.
Is that because it gets very hot and could pose a fire hazard?
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Old 04-18-2009, 06:32 AM   #6
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ziggy29,
Maybe its a good Idea to mount it off the floor so the Dog wont chew on it ? or maybe its seceptable to static electricity..again ?
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Old 04-19-2009, 02:53 PM   #7
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The 15-2507 has unacceptably high inherent noise levels, and isn't a good choice for digital reception. It's gain may be bigh, but it's noise level (6-7dB) means that really weak digital signals will be buried by the noise floor of the preamp. My personal experience with the 15-2507 is that it als has a very low-input overload threshold. Definitely NOT recommended!
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Old 04-26-2009, 09:13 PM   #8
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I'm not sure what noise levels means. all I know is that the available signals come in alot better than my old antenna/amplifier system. My goal was to receive the new free digital signal..and it worked. This is going to buy me some time so I can experiment on other antenna/amplifier products.

Mike
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Old 04-30-2009, 05:48 PM   #9
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The noise is the fog, the signal is a light house and the antenna is your spyglass.

No matter how strong the lighthouse is if the fog is too thick you will never be able to see it.

So, clear dry air is the best for seeing the farthest, just as low noise levels allow you to pull in weaker signals from further away.
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Old 04-30-2009, 06:12 PM   #10
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Quote:
Originally Posted by jim5506 View Post
The noise is the fog, the signal is a light house and the antenna is your spyglass.

No matter how strong the lighthouse is if the fog is too thick you will never be able to see it.

So, clear dry air is the best for seeing the farthest, just as low noise levels allow you to pull in weaker signals from further away.
--------------------------------------------------------------------------------

No, in the real world its a bullshit argument, its still about real world results, results, and results.

For some folks the higher gain may make the difference between getting a distant channel and for other folks, the higher noise of the radio shack amp will not benefit them.

If these were zero cost experiments in the real world, it might be one thing, but in the real world, you pays your money and takes your chances.
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Old 05-01-2009, 12:02 PM   #11
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Quote:
Originally Posted by jim5506 View Post
The noise is the fog, the signal is a light house and the antenna is your spyglass.

No matter how strong the lighthouse is if the fog is too thick you will never be able to see it.

So, clear dry air is the best for seeing the farthest, just as low noise levels allow you to pull in weaker signals from further away.
Maybe more like:

The transmitter is a star. The noise is the local light pollution. And your antenna is your telescope.

Minimize the local noise (light pollution) to see more clearly. And if that's not enough, get a bigger antenna (telescope) to collect more signal.
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Old 05-01-2009, 02:38 PM   #12
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The Otaota point of "The transmitter is a star. The noise is the local light pollution. And your antenna is your telescope.", is a somewhat strange argument.

It may be all well and fine if there is just one star in the sky, and at least in my case, I don't want to look at just one star, when there are millions of stars in the sky. So I rate my antenna set up by the raw number of channels I pick up and also by the content quality of the programming that station offers. Yes, my distribution amp has a fairly large gain, but fairly high noise at 4DB, but when a $26 gamble jumped me from 8 digital channels to 14, I am not going to go out and scientifically test, at some huge cost, could a lower noise lower gain amp get me more channels? Especially when I look at my TVDFOOL report and note I now get 100% of the gettable channels.

Sometimes the gain is more important than the noise, sometimes the added noise kills the added gain, unless someone is prepared to say they are 100% of the time correct in all reception situations, its only worth saying both amplification and noise are competing factors.
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Old 05-01-2009, 03:47 PM   #13
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That was not an argument so much as an analogy. An analogy that works for many stars in the sky, for that matter. Local light noise will still interfere with picking up any and all stars.

Truth is it could be a try it and see what happens as is the case with many reception issues, but the rule of thumb that a lower noise amplifier is still a better choice if you are not sure as the chances are greater that a low noise amp won't add to the problem. Now in the case of Radio Shack, they are pretty good about returning stuff so it may not be such a gamble.
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Old 05-01-2009, 07:38 PM   #14
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I agree with the rbinck point, when I bought my distribution amp, it was with the express agreement with the seller that I could return it if it did not improve my results. As it is, its really that the seller gambled and won, because they get to keep the profits on the sale.

But still we have to make a distinction here, I am a cheapskate do it your selfer, and had I called something of vanishing but valuable breed like Tiger Bangs, gave him an open checkbook, and asked him to do it right, his profit and hence the size of my final bill would be somewhat contingent on Tiger bangs doing the best job he could do with no return visits to keep tweaking things. And that implies first class equipment all the way.

And maybe I should ask Tiger bangs if he gets a volume discount by standardizing of equipment, saving that can partially be passed on to the consumer. Because if Tiger Bangs stocks everything under the sun in his truck, there goes any possibility of any volume discounts.
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Last edited by NonMcTubber; 05-01-2009 at 07:55 PM. Reason: add content.
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Old 05-01-2009, 08:39 PM   #15
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NMT
Quote:
you pays your money and takes your chances.
Exactly !
I was able to move from the 20th century to the 21st century with one purchase. Maybe this amp is best suited for the extreme deep fringe area's. somebody else might have different results with this amp depending on there location. I'm not planning on taking it back to the store or even moving it, sense I first turned it on... The downside to this amp is that it only has a 4 hour runtime before it turns off...must be some kind of energy saving device.
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