Splitter has 8 ports, I need more

[Coolant113]

I currently have 8 scanners hooked up to my PCT MA28PN RF Amplifier. The wire coming in from the antenna is LMR 400. I would like to add another splitter/amplifier to this, however I am not sure how to go about doing it. If I hook another one of these up to the current amplifier will it decrease the quality on the second one? Just looking for the options I have here and looking for some ideas.

Here is the link:

https://www.amazon.com/gp/product/B000WDR94U/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

 

[rbm]

If you already have enough signal, you can try this.

I have 5 ST2 antennas among others.
I feed as many as 32 scanners/radios, and a TV from two of them.
Each of those two antennas feed two of these.

Shown below is what I use for 16 radios.
(You can click on it to see the larger image.)

If need be, you can experiment with variable or relatively low gain pre-amps
The options are way too much typing and reading for here.
If you need any specifics on that, I could give you the 'short version' of one way or another,if you want it.

Rich

This is a portable version (with a cheap pre-amp and voltage block) that I've used to take with me to friends houses for them to see how it works for them.

 

[Ubbe]

You probably put the gear together very quickly just for the photo shot, so I assume that in real use you have the power injector and amplifier swithed around.
The splitter usually attenuate 15-25dB between the two ports at the left side and only 4dB to the single port at the right side.

/Ubbe

 

[rbm]

You probably put the gear together very quickly just for the photo shot, so I assume that in real use you have the power injector and amplifier swithed around.
The splitter usually attenuate 15-25dB between the two ports at the left side and only 4dB to the single port at the right side.

/Ubbe

No, I put that together around 4 years ago.
I don't even have it any longer.

The pre-amp and power block could be mounted closer to the antenna.
Voltage was supplied by a wall-wart connected to the power injector.

That was used to take to with me for others to try.

The ones I have in my den on my other scanners have good, low noise, 'expensive', pre-amps between them.

Rich

 

[buddrousa]

Hear is another 0 loss multicoupler that has been used by a few here not some cheap TV 70 ohm splitter that does not match your 50 antenna and coax.
Wideband RF Multicoupler - 16 Radios, Surge Protected, 50 Ohm

 

[mule1075]

]



You would be surprised about how well those cheap splitters work.And before you chime in an ask yes I have used better or expensive as well.I have a 8port and a 4port Stridsberg.And for receive only the 75ohm to 50ohm argument is only that the loss is nil.

 

[N9JIG]

75 ohm stuff works just fine on scanners. High quality TV amps and splitters work very well on scanners, they cover very similar general frequency ranges. Impedance is not a real issue.

While I generally use Stridsbergs (I have a half dozen of them) I have often used TV gear and had great results. I have a Wingard distribution amp and a couple different splitters and they work great.

 

[Project25_MASTR]

A multicoupler is really a simple device. Basically a power divider and amplifier.

Often times you will see something along the lines of an 8 port divider and a pre-amplifier. In order to have neutral gain, you will need 9 dB of gain from the pre-amp (conservation of energy). To add more ports, you'd require two 8 port dividers and a 2 port divider. The output of the pre-amp goes into the 2 port divider and the 8 port dividers will connect to the two port divider. You will now need an extra 3 dB of gain to allow for neutral gain however.

Take that a different route. Say you instead connect another 8 port to one of the ports of the existing 8 port. You will now loose a total of 18 dB through the system so if you pre-amp has a gain of 9 dB your 7 available ports on your primary divider will have a neutral gain while taking a 9 dB total loss on the secondary divider.

 

[wtp]

and

i have used a slpitter in reverse.
two antennas into a splitter and into one radio and also tried the TV.
it works fine.
for the local TV ch 11 i had too small a signal and with this setup i could get them.
and signal wise it was close enough that if a car went down the road, and in between us, the TV went quiet.
living at the end of the road meant i did not need a doorbell.

 

[nosoup4u]

I am going to be running into a similar situation soon. I currently have 2 electroline 0 loss splitters. Is there any reason why I couldn't put the 2nd splitter behind the first one?