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Posts: 1
Registered: ‎12-14-2009
Location: VIrginia
0 Kudos

Need Advice On Splitter Amplifier

I recently had Verizon Fios send me 4 additional STB boxes (QIP2500-3) for 3 additional bedrooms and a den.  The splitter which was a four way splitter had to be replaced with an 8-way splitter which Verizon supplied.  When I connected  the first two additional rooms, the Tv's worked.  When I connected the last two,  I lost the signal to all of the TV's except on.  Through trouble shooting, I found out I need a signal amplifier.  Can anyone give me more advice on a coax signal amplifier or some sort of solution to my problem?  I also really didn't need an 8-way as a 6-way would do  (5 TV's and the Modem) but don't know if this would fix the problem.   

Gold Contributor III
Posts: 2,315
Registered: ‎08-05-2008
Plan: Extreme HD DV /50/25
Location: SE Pennsylvania
0 Kudos

Re: Need Advice On Splitter Amplifier

I am not aware of an amplifier that is compatable with FIOS.  The problem is that you need a bi-directional amplifier with a pass band above 900 MHz (for the MoCA signal that delivers the guide and VOD).  AFAIK all the so called bidirectional cable amplifiers are designed for standard cable system architecture and only provide a return path below 49 MHz. 


Changing the splitter to a 6-way should help, but even with an 8-way there should be plenty of signal (if you are getting your own splitter make sure it is rated for 5 - 1000 MHz).  Are the unused ports on the 8-way terminated with a 75 ohm load?  All unused splitter ports should be terminated. 

If a forum member gives an answer you like, give them the Kudos they deserve. If a member gives you the answer to your question, mark the answer as Accepted Solution so others can see the solution to the problem.
Bronze Contributor II
Posts: 372
Registered: ‎09-15-2009
Location: Beaverton OR
0 Kudos

Re: Need Advice On Splitter Amplifier

It is also possible that a signal reducer is in place. You should have more than enough signal strength to run the boxes.

"If your problem has been solved, please mark it as such. Don't forget to hand out your Kudos!"
Posts: 1
Registered: ‎01-18-2010
0 Kudos

Re: Need Advice On Splitter Amplifier

Bi directional amplifier.

There is not really such a thing.

Actually there is a tuned filter to allow talk back to the main hub.

The filter is shunted from the input and the output and allows the passing of the talk back frequency spread while

offering a large impedance to the normal channel spread so as not to affect the operation of the amplifier for the

channels used.


Most Bi directional amplifiers are for the Comcast type that allow a a talk back or through for 5-42MHZ range.

The above frequency is out of range of the 54 to  1000 mhz  of the amplifier and stops any oscillation due

to the feedback of the talk back.



What needs to be done is to get an amplifier that  has a cutoff lower than  is lower than the 900mhz region

for the talk back.

Putchasing one that is x to 1000 mhz is not a good idea.

One with a cutoff that is below 900mhz is what is needed as you do not want to amplify the talkback

frequency to prevent stauration of the amplifier.


Where do you get the band pass filter.


Get the 915mhz saw filter it will serve the purpose.




You may need two if your amplifier saturates with feedback

The first is a shunt from input to output.

The second may  have to be used as a input shunt .



I see no reason that this scenario will not work.








Posts: 8
Registered: ‎09-18-2009
0 Kudos

Re: Need Advice On Splitter Amplifier

The FiOS tech that installed my service installed an amplifier on the coax leg that feeds my router (AT) to

clear up an issue with widgets and guide data.

It was made by the same company that makes the splitters (PDI). It was supplied at no cost to me.




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