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Cable TV Amplifier Information Page

This page is provided as a service to cableTVamps customers. We hope the information provided here helps you to make a more educated decision about your cable amplifier purchase. I am a fair and honest seller of Cable TV Amps. That is all I sell, and I know my stuff!

Confused about what a Cable TV Amplifier is?
Need some straight information about all of the different models?

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All product specs available at the bottom of this page.
All pictures and text contained on this page are copyrighted by cableTVamps © 2002-2008. Use of my pictures and descriptions without my expressed written consent is prohibited. 

What is a Drop Amplifier (Drop Amp)?
In Cable company terms, each customer has a cable running from a utility pole or pedestal to their home. The "pedestal" is a cable company distribution box - where they hook up a whole bunch of homes to one place. It is generally where you see the cable guys working a lot. The cable company refers to the connection from their "box" to your home as a cable "drop". Years ago when the signal was too low at a customer's house, the cable company used to go out and install a "drop amplifier" pretty much for free, just inside the customer's house. Nowadays, Drop Amplifiers are available from the cable company to compensate for weak signals or multiple TVs, but they charge you a premium for them, and generally don't give you a choice of models (1,2,4, or 8-port models).

So the term "Drop Amplifier" is a cable company term. Now you learned something new!

There are four basic kinds of amplifiers: "cheapies", Bi-directional amplifiers, Bi-directional Active Return amplifiers and Reverse Path amplifiers. I will describe each type so you can understand what you need to make your TV or cable signal better.  

It is very important to note some key terms used to describe amplifiers:

Cable TV Amplifier = Cable TV Signal Booster = TV Amplifier = Antenna Amplifier = Drop Amplifier
These terms all mean the SAME THING when buying an Amplifier. 
I use different terms in my auctions so that people can find my stuff using different searches.

Not all cable amplifiers are the same. There is a very big difference between the "cheapies" as we call them, and the high quality 1GHz cable TV amplifiers we sell. Read on further to learn more.

"Cable TV Amplifier" DOES NOT = "Cable TV Equalizer", or "Drop Equalizer".
Some sellers on eBay actually advertise Cable TV amplifiers as "Equalizers". This is incorrect. An equalizer is a very specialized product which I will describe below. I have never actually seen an auction for a true Electroline equalizer on eBay - so I don't think you have either.

What is a Cable Amplifier? Why do I need one?
Simply put, a cable amplifier is a box that boosts your antenna or cable TV signals. When your cable signal comes into the house, it is generally strong enough to provide a good signal to two or three televisions. However most homes have many more than three TVs - and that doesn't even include all of the TV accessories! Cable TV boxes, VCRs, TiVo, ReplayTV - all of these boxes require a good strong signal to provide you with a good picture. 

When your cable comes into your house, it starts getting split into different directions. It is these splits that cause your cable signal to suffer. Every time your cable signal is split, the signal gets weaker - causing graininess and in severe cases, SNOW. I had these same problems in my own home before I went on a search for a good product to give me strong, clear reception. Like other people, I had several TVs in my home, and in some rooms I had a TV, VCR, and a cable box. In order to feed a signal to those three devices, I had to connect a three-way splitter to the cable coming out of the wall. I didn't think twice about all those splitters in my house until I started having problems. My TV picture started getting "grainy", and when I recorded TV programs on my VCR, the picture would be blotchy and lack good clarity. I realized I was not getting a strong enough signal at my TV and VCR to give me a good clear picture.

My first try at fixing things was to go to Radio Shack and buy one of their standard amplifiers. It cost about $35-40. when I hooked it up to my incoming cable, I noticed a couple of things - the TV picture did not appear to be any stronger, and now there were ghosts and other strange interference appearing on various channels. I ended up taking it back. From there I went to Home Depot to see if they had anything better. They had a couple of different brands, so I bought one of each and took them home to try out. Neither one of them made the picture significantly better, and in each case many channels actually appeared to be WORSE. I realized at this point that there had to be something better - better than the cheapie amplifiers sold at local electronics stores. I found my first Electroline amplifier on eBay almost 2 years ago, and I have been a believer in "you get what you pay for" ever since. I decided to start selling the great product that I found so useful. Electroline cable TV amplifiers cost more than the Radio Shack or Home Depot "cheapies", but they are well worth it.

Why are they better? The quality amplifiers are made totally differently than the cheapies. They use high quality components and a sealed PC board (PCB) design. They incorporate a Gallium-Arsenide (Ga-As) semiconductor with PCB surface mounted components. The Ga-As technology was developed by Electroline many years ago. This technology has become the industry standard for the major manufacturers of cable amplifiers (drop amps) in the last five years. 

Here are some characteristics of amplifiers which help determine how effective they are in providing a good, clean amplification of your signal.

CHEAPIE AMPLIFIERS: Cheapies are the types of amplifiers typically purchased at Home Depot™, Radio Shack™, Target™, and general electronics stores. These amplifiers will boost a TV signal in the 50 to 700-900 MHz range.  They are generally constructed of very inexpensive parts, made in China, and in my experience they typically do not help improve television pictures. The reason for this is that because they are made of cheap materials and not well engineered, so instead of improving your picture they actually add what is called noise (distortion) into your TV signal. I personally have tried several of these amplifiers (Radio Shack, Recoton, RCA, and others) and found that they seemingly don't do a darned thing. At least none of them seemed to make my TV picture any better. That is the whole reason I looked around for a better product, and then opened up this small eBay business.
The CHEAPIES are ok for maybe a small TV/VCR, in an area where TV reception is OK, but could use a little boost. They might also be OK for regular Outside Antenna TV if you have a particularly long cable running from your antenna to your TV.

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BI-DIRECTIONAL (FORWARD ONLY) AMPLIFIERS: Bi-directional amplifiers are the kind that you typically do NOT find on the store shelves, even at your favorite video/electronics store. These amplifiers are different from the CHEAPIES for a number of reasons. First, they are generally made of higher quality components - and NOT in China, although some brands are. Bi-directional amplifiers use expensive, high tech components which allow them to amplify the TV signal, and at the same time allow your cable box to send signals back to the Cable Company. Bi-directional amplifiers operate in the 50-1000 MHz range,  making them PERFECT for Standard Cable, Digital Cable, HDTV, and interactive services as well as Cable Modems. Bi-directional amplifiers only amplify the signal going TOWARD your TV or Cable box. They DO NOT amplify signals going back to the cable company, and for that reason they may not always work well with cable modems. We recommend using only 1-port or 2-port amplifiers or "Active Return" amplifiers with cable modems for the best results.

RETURN PATH (REVERSE ONLY) AMPLIFIERS: The Electroline EDA-ERA4100 is a Return Path amplifier. Return Path (Reverse) amplifiers are the opposite of the Bi-Directional Amplifier description above, as they amplify ONLY the 5-42 MHz (return band) signals going back to the cable company, and simply "pass through" all of the rest of the signals. There is only one brand that we know if - Electroline, and they are a pretty rare find. A Reverse Path amplifier will help in situations where the RETURN traffic going back to the cable company needs to be boosted, or where the digital cable box is unable to consistently transmit information back to the cable company. Usually this is because of long cable runs which tend to decrease the signal significantly.  Either way, a Reverse Path Amplifier will not make your cable modem FASTER, it will only make it more RELIABLE. Better reliability may make it seem like it is faster. Only your cable company can "speed up" your cable modem access by adding new equipment.

ACTIVE RETURN PATH (FORWARD & REVERSE) AMPLIFIERS: Active Return Path amplifiers are the best of both worlds. Active Return Path amplifiers not only boost the forward path (50-1000MHz), but they also boost the Return Path (5-42 MHz) signals going back to the cable company. These amplifiers will work in situations where the return path (for cable modem or cable box) is hampered by long runs, too many splitters, or just too many connections in your home. By boosting the return path, these amplifiers make sure that your cable modem connection speaks "loud and clear" to the cable company's equipment back at the cable company's offices. This is important, because if your signal is weak when it gets back to the cable company you will be less likely to get a good share of internet bandwidth, or possibly have a less reliable data signal.  Active Return amplifiers are great for situations where you want to consolidate all of your cable connections to a single point, eliminating ALL splitters. This is often difficult to do if you have 5 or more connections in your home. 8-port amplifiers or splitters often create too much "return path loss" to effectively use your interactive equipment. This is why the cable company will often install a splitter just for the cable modem - before any other connections in your home. The Active Return amplifier eliminates this loss and provides an unobstructed return signal back to the cable company, which allows you to eliminate those extra splitters. Just note - an Active Return Path Amplifier will not make your cable modem FASTER, it will only make it more RELIABLE. Better reliability may make it seem like it is faster.

FORWARD PATH EQUALIZING (Tilt) AMPLIFIERS: Equalizing Amplifiers come in only 1-port versions. They are specialized equipment designed to overcome some of the problems associated with very long cable runs. When a cable signal travels over a long cable run (>150 feet), the higher channel (high-band) signals tend to lose strength faster than the lower channel (standard-band) signals. If you use standard amplifiers over long cable runs, you end up with very strong standard-band signals, and very weak high-band signals. Essentially you will be able to see the lower channels, but the higher channels may be weak. The opposite may also happen: the standard-band signals may be so strong that they OVERDRIVE your TV or cable box, and the high-band channels may be just fine. The solution to this problem is to install an equalizer over long cable runs. The Electroline EDA-EQ3100 boosts the signal more on some channels than others, so that this "long cable run" problem does not occur.

Frequency Range/Bandwidth: The frequency range (bandwidth) determines what range of signals the amplifier can handle. Basic outdoor Antenna TV and Cable TV signals go from 50~800MHz (Megahertz), Digital Cable services can go as high as 1000MHz (also known as 1 Gigahertz - GHz). Digital Cable and Cable Converter boxes also require what is called a return path. Most cable amplifiers do not provide a return path unless they explicitly advertise that they do. If the amplifier does not support a 5-42 MHz return path, it will not work with cable boxes or cable modems. .When buying an amplifier, always ASK if the frequency range is not advertised. It is generally not advertised if it is a CHEAPIE amplifier.

Return Path:  The Return Path is a special frequency range used by the cable company to transmit signals FROM your cable box BACK TO the cable company. Ever wonder how the cable company can allow you to "talk back" using your cable TV box? How about ordering a Pay-Per-View special using your cable box remote control? The cable TV boxes actually transmit signals BACK to the cable company to tell them that you want to watch the "Wrestlemania 25" pay-per-view event. Then the cable company sends a signal back to your cable box to "turn on" the pay-per-view channel. That's how they do it. Cable companies also require the return band for use with cable modems. If the cable amplifier does not support the return band, the cable modem won't work with it. The standard return path is in the 5-42 MHz frequency range. A bi-directional amplifier is required to allow these special cable company signals to travel back to the cable company. CHEAPIE amplifiers will not work with Cable TV Digital services, Multimedia (Cable Modems), and Cable TV boxes.

Bi-Directional: Bi-directional means that signals can pass in both directions. This means that the cable company can send signals to you, but you can also send signals back to the cable company. Bi-directional has nothing to do with Amplification. Cable signals can be amplified in one direction only, by ONE amplifier. If an amplifier is advertised as amplifying in BOTH directions, be aware that these products are specialized and relatively expensive compared to regular amplifiers. Some  people selling cable TV amps on eBay do not know the difference, and will incorrectly advertise bi-directional as full 2-way amplification. The cost of an Active Return Amplifier is significantly different than a standard bi-directional Amplifier. If you're not sure, drop me an email with the model number of the product you are looking at, and I'll tell you what it is if I know.

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dB : TV signals are actually measured in dBmVs. A dBmV is a somewhat complicated to understand reference voltage term used in the TV/Cable industry. In a nutshell, TV signals are transmitted using extremely low voltages (around 1/1000 of 1 volt) of electricity on your cable lines, and what the actual voltages are determines a lot about how your TV picture will look. No, you don't need to understand dBmVs, but you might want to understand how splitters and amplifiers affect  your TV signal, and that is where we talk about dBs. dBs are a RELATIVE measure of how strong your signal is, versus how strong/weak it USED to be. 
For example: You have a 2-way splitter connected to your incoming cable line. The marking on the splitter says 3.5dB. The 3.5dB marking really means that the signal coming out of the splitter will LOSE 3.5dB of strength. How much is that? In TV terms, there is a way of calculating this using a logarithmic formula. Instead of going through the formula, I have provided a table of some of the most common dB gain/loss values (TABLE 2), and their associated effect on your TV signal. So, getting back to our 2-way splitter - you end up losing 3.5dB or more than HALF of your original signal. It is calculated as follows:

Signal Loss Percentage = 1 minus ( 1 divided by dB power factor)      OR

% Signal Loss = 1 - (1 / (dB power Factor))


2-way Splitter Signal loss (percentage) 4-way Splitter Signal Loss (percentage)

%Loss = 1 - (1 / 2.28)     (2.28 is the dB power factor for 3.5dB)
%Loss = 1 - ( 0.44)
%Loss = .56 or 56%

Inserting a 2-way splitter decreases your signal strength by 56%.

%Loss = 1 - (1 / 5.01)
%Loss = 1 - (0.2)
%Loss = .8 or 80%

Inserting a 4-way splitter decreases your signal strength by 80%.

What happens when you split your cable multiple times? This is how you would add up the two splitters in the example:

3.5dB loss + 7.0 dB loss = 10.5 dB loss 

The 10.5dB loss number is not in the table, so we'll estimate it another way...
We lose 56% of the original signal, then ANOTHER 80% of the remaining signal. 1- (0.56 * (1 - 0.80)) = 0.888 or 88.8% signal Loss. After these two splitters almost 90% of your original signal strength is GONE. By the way, if you know the 10.5dB loss number, the ACTUAL loss for a 10.5dB signal drop is 91%, so we were pretty close. It's no wonder your TV picture is so crummy, even after going through just ONE splitter, let alone TWO!

When shopping for an amplifier, bigger dB numbers are not always better. Too much of a good thing can actually make things worse for you. It is easily possible to make your TV signal WORSE by boosting the signal too much. This is called OVERDRIVING the signal. It is bad because it causes buzzing, bleeding or blotchy colors, and white streaks - among other problems. The best strategy is to keep the signal strength as close as possible to the signal strength provided by your cable company. In the real world this is done through painstaking calculations of cable lengths and cable splits throughout the house. However, most people don't know how to compute gain/loss so they take a SWAG (simple wild-ass guess) at it by throwing an amplifier in place, in the hope that it does what they want. Believe it or not, this actually works most of the time! If that were not the case, my feedback would certainly not be so good. Fortunately a good guess works for about 95% of the simple situations out there.

Table 2

dB Boost/Loss dB Power Factor Voltage or Current Ratio
0.0 1.00 1.00
0.5 1.12 1.06
1.0 1.26 1.12
3.0 2.00 1.41
3.5 2.28 1.50
4.0 2.51 1.58
5.5 3.55 1.88
7.0 5.01 2.24
10.0 10.0 3.16
11.0 12.6 3.55
15.0 31.6 5.62

Amplification (also known as dB boost): Amplification is the process of boosting a signal. Amplification is generally needed for homes with multiple TVs, or where long cable runs (>150 feet) are used. Amplification is generally a good thing, except for the fact that cheap TV amplifiers don't do a real good job, and can actually make the TV signal worse. Cheap amplifiers add "noise" to the signal, which can then be seen as ghosts, buzzing, snow, lines through the picture, and other annoying things. Good amplifiers do their job so well that they don't add ANY noticeable noise to the TV signal. Good amplifiers make your picture look BETTER, and don't cause side effects like ghosts, lines, or snow. The boost is measured in dB. 
EXAMPLE: Based on our Decibel Table above, a 1-port amplifier provides 15dB of forward signal gain, which means that the signal is almost 32 times stronger coming out of the amplifier than the signal going in.  In addition, a 1-port amplifier has a return path loss of 0.5 dB, which means it causes an 11% loss on any signal going back toward the cable company. Here is a quick summary table:


# Amplifier Ports Signal Gain (dB) Forward Signal Boost Factor Return Path Signal Loss (dB) Return Signal Loss Percentage
1 15 31.6 x -0.5 -11%
2 11 12.6 x -3.5 -56%
4 7 5.0 x -7.0 -80%
8 4 2.5 x -10.5 -91%
4 (UG model) 0 1.0 x -7.0 -80%
8 (UG model) 0 1.0 x -10.5 -91%
4 (Active Return model) 7 5.0 x +3.0 +100%
8 (Active Return model) 3 2.0 x 0.0 0%

Forward Amplification vs. Unity Gain: 4-port and 8-port Electroline amplifiers come in two versions - those WITH forward gain, and those with UNITY gain. The Unity Gain amplifiers generally have the letters "UG" right on the label (EDA-UG2402 or EDA-UG2802). A unity gain amplifier acts just like a big splitter. It breaks up a cable signal, but does not provide a boost to the signal. This means that "signal strength IN = signal strength OUT". Unity Gain amplifiers are generally used for special applications where you specifically do NOT want any amplification of the signal. Standard amplifiers will provide Forward Gain, which is expressed as a dB number. 4-port amplifiers generally provide 7dB of "forward gain", and 8-port amplifiers generally provide 4dB of "forward gain". 

Splitter: Splitters are used to break your incoming cable or antenna signal up so that it can go to more than one TV. Everyone has at least one splitter somewhere. The problem with splitters is that every time you use one, you cut your signal strength down. It's like putting one of those Y-splitter things on your garden hose... These drops in strength are also measured in dBs. A high quality two way splitter will generally make you lose 3.5dB. A 3-way splitter will make you lose 5.5 dB, and a 4-way splitter will make you lose at least 7dB of signal strength. What does that mean? Well if your signal drops enough, you will get snow or a fuzzy picture. If you use multiple splitters, you actually degrade your TV signals a LOT. Splitters also have a Frequency Range. Always use high quality, 1000 MHz DC PASSING splitters. If you use high quality splitters you will save yourself a lot of headaches. They cost more, but they are worth it. cableTVamps only sells these high quality splitters.

Insertion or Return Path Loss (dB) : Every time you put a splitter or amplifier into your cable line, it causes the signals going BACK to the Cable Company to weaken. This is particularly problematic if you are using a cable modem or Digital Cable Services. If the signal that the cable modem or Digital Converter sends back to the Cable Company is too weak, your services may not work. Each splitter or amplifier is rated for (return) loss, which basically tells you how much signal strength you lose when the signal goes back through the splitter or amplifier. Here are some approximate Return Loss numbers for common situations:


Splitter Type dB Loss % Signal Strength Lost
2-port 3.5 56%
3-port 5.5 72%
4-port 7 80%
8-port 11 92%

These numbers are all based on HIGH QUALITY 1 GHZ splitters. Lower quality splitters will likely have higher loss numbers. What about the Amplifiers? Amplifiers also cause return path signal loss. Those numbers are listed in Table 3. Bottom line, this means that even if you use an amplifier, you could end up with weak signals going BACK to the Cable Company. That's why the cable company usually uses a dedicated cable line for your cable modem, so that the signals traveling back to the cable company stay as strong as possible.

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RG6, RG59: These terms describe the physical cable used in your home. RG59 is thinner and cheaper, and allows more signal loss. RG6 is a heavier cable which comes in 2 flavors - standard and quad-shield. If you are installing new cables in your house, use quad-shield cable. it costs about 20-30% more than regular RG6, but keeps SIGNAL LOSS at a bare minimum. You should not use RG59 cable unless RG6 is unavailable. Home Depot carries both RG6 and RG6 quad-shield cabling in 100 and 500 foot spools.

F Connector: An F Connector is the standard screw-on connector used on the back of your TV, VCR, or Cable box. It is a standard for all TVs, VCRs, and Cable Boxes. Cable amplifiers use F Connections to connect into your system. When replacing cable ends or installing new cables, always use high quality crimp on cable connectors. There are different sizes for RG59, RG6, and RG6-quad - so be sure to buy the right ones. You will also need a cable stripping tool for coax cable - there are plenty available on eBay. Just search for "coax stripper", and you'll see what you need. You can also pick them up at Home Depot. The same thing applies to the crimping tool. Make sure that which ever tool you buy supports the cable size you are using, since there are different crimper sizes.

Cable Modem: A Cable modem is a piece of equipment which receives data  from your cable company (your Internet provider) and also sends data from your home back to the cable company and out onto the Internet. It is always used with your home computer. Cable modems allow you to send information to and from the internet just like a regular modem, except you are using the Cable Company's cable lines instead of the Phone Company's phone lines. Cable Modems use the same signals as your regular Cable TV Converter box. The only difference is that the Cable Modems use different frequencies which cannot be seen by your television set. Cable modems generally require a pretty strong signal, which also means that they require a fairly unrestricted path back to the cable company. This is why the cable company will put in a totally separate cable connection dedicated to the Cable Modem. Cable Modems will GENERALLY work in conjunction with a Bi-directional amplifier or a Splitter... I guess it would be better to say that they TOLERATE bi-directional amplifiers and splitters. Depending on the situation, a bi-directional amplifier may improve or degrade your cable modem performance. The best rule here is " If it ain't broke, don't try to break it". If your cable modem is fast and generally reliable, you don't need an amplifier for it. However you might still need an amplifier for the rest of your TV equipment in the house.

Here are some typical ways that an amplifier is used with a cable modem:

Cable Modem Setup #1: This is normally the way the cable company will install your cable modem. Adding in the amplifier as shown in the picture will not hurt your cable modem, and will improve your TV picture.

Cable Modem Setup #2: Put an amplifier in BEFORE the splitter for the cable modem. It will help the cable modem operation as well as improve your cable TV picture.

Cable Modem Setup #3: 3: Put a 2-port amplifier in place of the 2-way splitter. It will help the cable modem operation as well as improve your cable TV picture. This setup is somewhat "cleaner" than the 1-port amplifier used with a 2-way splitter.

Standard Cable/Digital Cable Setup: Put an amplifier as close as possible to where the cable comes into the house (to prevent signal degradation), and then split the cable off to various TVs and cable boxes throughout the house.

Outdoor Antenna Setup: Put an amplifier as close as possible to where the antenna wire comes into the house (to prevent signal degradation), and then split the cable off to various TVs throughout the house.



cableTVamps Electroline Products

EDA-2100: This is 1-port amplifier. It is best suited for connecting to your incoming cable line before you start splitting off the line to go to multiple TVs. The 1GR is generally the best for use with cable modems, since it has the lowest return loss. Similar Products: Viewsonics VSA-601, Scientific Atlanta Surge Gap (1-port)

EDA-2200: This is 2-port amplifier. It is ideal for situations where you have a cable modem and regular TV. Usually the cable company will put in a 2-way splitter and dedicate one of the lines to the cable modem, and the other line for all your TVs. This amplifier directly replaces that 2-way splitter, and provides a great signal boost to both the cable modem and the TV's.

EDA-2GR: This is a 2-port amplifier/splitter. It boosts the incoming signal ,and at the same time splits it up for you. That way, you can connect 2 devices without having to use any splitters. It is suitable only for indoor use, but provides the exact same functionality as the EDA-2200. The return path on the 2GR is non-standard (5-30MHz) so we do not recommend using it with cable modems.

EDA-4GR: This is a 4-port amplifier/splitter. It boosts the incoming signal ,and at the same time splits it up for you. That way, you can connect 4 devices without having to use any splitters. It is suitable only for indoor use, but provides the exact same functionality as the EDA-2400. It uses a different power supply - which is the main distinction between the 4GR and the 2400.

EDA-4G: This is a 4-port amplifier/splitter. It boosts the incoming signal ,and at the same time splits it up for you. That way, you can connect 4 devices without having to use any splitters. It is suitable only for indoor use, but provides the exact same functionality as the EDA-2400, however it does NOT provide a return path. It is not suitable for applications requiring a return path.

EDA-2400:This is a 4-port amplifier/splitter. It boosts the incoming signal and at the same time splits it up for you. That way, you can connect 4 devices without having to use any splitters. It is suitable for indoor or outdoor use. The main difference between this and the EDA-4GR is the power supply connection. Take a look in my eBay Store, and you can see the physical difference between the two amps. 

EDA-2800:This is an 8-port amplifier/splitter. It boosts the incoming signal, and at the same time splits it up for you while boosting the signal by 4dB (2.5 times). That way, you can connect up to 8 devices without having to use any splitters. It is suitable for indoor or outdoor use. 

ERA-4100: This is a reverse path amplifier. It is used when communications back to the cable company require a boost due to too many splits, or too long of a return cable run. It can improve cable modem reliability, and fix problems with digital set-top boxes that have trouble communicating back to the cable company - like for ordering services and pay-per-view.

EDA- EQ3100: This is a forward path amplifier with a built in equalizer. When you run cable signals over long runs (150' or more), the signal gets messed up. The reason for this is that the higher cable frequencies tend to lose strength faster than the lower frequencies. What  ends up happening is that the signal becomes too strong on some channels (lower frequency) and too weak on other channels (high frequency). the EQ3100 corrects this by incorporating a variable boost (also known as tilt compensator) into the amplifier. The EQ3100 amplifiers less on lower frequencies, and more on the higher frequencies. An EQ3100 should always be used at the start of a long run, before the signal has a chance to get messed up. 

EDA-FT08000: This is an 8-port amplifier/splitter with all of the ports configured on the bottom of the amplifier. It boosts the incoming signal (+3db, slightly less than the EDA-2800) but provides a much easier way to hook up cables - especially when the amplifier is wall mounted. This way, you can connect up to 8 devices without having to use any splitters. It is suitable for indoor or outdoor use.

EDA-FT08100: This is the top of the line 8-port amplifier/splitter. It is in the same form factor as the FT08000, but includes special Return Path circuitry. This circuitry provides a boost which effectively produces ZERO loss, making it compatible with ANY cable TV application. You can connect any type of TV equipment to this amplifier without concern. It will just work. TV, VCR, cable modem, TIVO, HDTV - all of these will work just fine. It is suitable for indoor or outdoor use, and is the only 8-port cable TV amplifier available which has ZERO return path loss.

Amplifier # of Ports Boost Return Path Loss Indoor/ Outdoor Approx Cost $ Cable Modem or TV use?
EDA-4GR (discontinued) 4 7dB -3.5dB No $35 TV - HDTV - Cable - Digital Cable
EDA-1GR (disc.)
1 15dB -0.5dB No
TV - HDTV - Cable - Digital Cable and/or cable modem
EDA-2200 2 11dB -3.5dB Yes IN  EBAY STORE IDEAL for 
TV - HDTV - Cable - Digital Cable
 and cable modem
EDA-2400 4 7dB -7dB Yes IN EBAY STORE TV - HDTV - Cable - Digital Cable
May work with cable modem, but not recommended
EDA-2800 8 4dB -10.5dB Yes IN EBAY STORE TV - HDTV - Cable - Digital Cable
EDA-2802 (disc)
8 0dB -10.5dB Yes $75+ TV - HDTV - Cable - Digital Cable
ERA-4100 1 15dB (Reverse) N/A Yes IN EBAY STORE Cable Modem - for very long runs or multiple splits
Cable TV - for problems with multiple splits and digital cable control boxes
EDA-EQ3100 1 7-14dB
-0.5dB Yes IN EBAY STORE TV - HDTV - Cable - Digital Cable
For very long runs, compensates for high frequency drop-off
EDA-FT08000 8 3dB -11dB Yes IN EBAY STORE TV - HDTV - Cable - Digital Cable
EDA-FT08100 8 3dB 0dB Yes IN EBAY STORE TV - HDTV - Cable - Digital Cable, Cable Modems and all Interactive Services

I provide this information as a general service to my customers. If you are thinking of buying an amplifier, buy from ME! All of my items are available in my store. If you need something you do not see, drop me an email! 

I would like to keep improving this information, so if you have anything to add, find a mistake or have any other feedback, Please email  

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All pictures and text contained on this page are copyrighted by cableTVamps © 2002-2008. Use of pictures and descriptions without my expressed written consent is prohibited.