BNC Splitter

[Bonkk083]

I have one of these splitters will this work for my sdr and scanner, to me it looks like two ins and one out

 

[WB5UOM]

hook it up...see how it plays ...
someone will chime in and say its gonna cost you 3db loss by splitting it that way...just try it..see if it works for you..no harm or loss trying

 

[mmckenna]

to me it looks like two ins and one out

It's a passive device, there is no in or out.

And, yes, it'll divide your power. If you have a weak signal, it's going to make it weaker.

But I agree, it won't hurt to try.

 

[Whiskey3JMC]

I have one of these splitters will this work for my sdr and scanner, to me it looks like two ins and one out

If you have it, why bother asking the group? Try it for yourself

 

[dlwtrunked]

I have one of these splitters will this work for my sdr and scanner, to me it looks like two ins and one out

If you use one and care about impedance, well you really do not care about impedance. Here is a more proper device that is similar

SP-1300 Combiner/Splitter | Scanner Master

SP-1300 Combiner/Splitter

www.scannermaster.com

Both will lose you 3 dB or more. Othere threads will tell you better ways to do this with active TV stuff, Stridsberg Engineering units, or making your own..

 

[WB5UOM]

and please report back your findings

 

[Bonkk083]

Will this work never seen one of these till now

Pardon Our Interruption...

 

[G7RUX]

Using a T-piece will work but can cause interesting effects as the devices can interact. You would be better off using a proper combiner/splitter as this can keep impedances correct and provide a modicum of isolation between the ports.

People will say “you’ll lose 3dB” but you don’t really; splitting the power two ways will lower each by half, or 3dB but all of the power is still there, less a small amount of actual loss in the device. The T-piece, with one device connected does not reduce the level by 3dB until the second device is connected.

Give it a go and see if you like it!

 

[buddrousa]

It should be noted that splitting a signal is a 3db loss. What is 3db loss well 3db is signal or power cut in half.
It should also be noted that taking 2 10DB antennas and putting a splitter and co-phasing them does not give you 20db either no ware near it

 

[jtwalker]

It should be noted that splitting a signal is a 3db loss. What is 3db loss well 3db is signal or power cut in half.
It should also be noted that taking 2 10DB antennas and putting a splitter and co-phasing them does not give you 20db either no ware near it

It is 100db right? Multiplies the two gain numbers?

 

[buddrousa]

Its more like 14db if I remember.

 

[dave3825]

Using a T-piece will work but can cause interesting effects as the devices can interact.

So true. When I tried many years ago with 2 dongles, reception on one dongle degraded pretty bad.

 

[ecps92]

hook it up...see how it plays ...
someone will chime in and say its gonna cost you 3db loss by splitting it that way...just try it..see if it works for you..no harm or loss trying

What works for you - Works for you. Experiment and see how it goes.

I've done it with a Beam and standard back of set BNC with amazing Results for my monitoring efforts
YMMV

 

[MiCon]

I have two antennas in the attic, running four scanners. Each antenna feeds two scanners, using the BNC T. I just listen to local stuff, and I hear everything I want to. I have found, however, that it does help to keep your second radio connecting cable as short as possible.

 

[PrivatelyJeff]

Will this work never seen one of these till now

Pardon Our Interruption...

Maybe but that’s probably 75ohm (more loss) and I’ve heard that the center pins are larger and will slightly stretch out your connectors.

 

[bearcatrp]

Those suck. Unless you have very strong signals, you will not like it. Have one in my radio bag. Dlwtrunked gave you good advice.

 

[prcguy]

A T adapter is not a legitimate way to split signals to two receivers, that method is full of problems and you will get varying levels of signal to each receiver depending on frequency and length/type of cable. Plus there will be zero isolation between receivers. You need an actual RF power divider for the job that will work independent of cable length or frequency as long as you operate within the specified limits of the divider. I typically shop for MiniCircuits brand RF power dividers used or new surplus from ebay.

 

[Bonkk083]

A T adapter is not a legitimate way to split signals to two receivers, that method is full of problems and you will get varying levels of signal to each receiver depending on frequency and length/type of cable. Plus there will be zero isolation between receivers. You need an actual RF power divider for the job that will work independent of cable length or frequency as long as you operate within the specified limits of the divider. I typically shop for MiniCircuits brand RF power dividers used or new surplus from ebay.

What is the model

 

[G7RUX]

Maybe but that’s probably 75ohm (more loss) and I’ve heard that the center pins are larger and will slightly stretch out your connectors.

Originally 75 ohm connectors had smaller pins and plugging a 50Ohm plug into a 75 ohm socket would damage the socket spring contact. Many 75 ohm BNC connectors now use the same size pin as a 50 but a springier centre socket contact.

 

[Ubbe]

What is the model

You can use $5 CATV splitters. It's 75 ohm but if you connect 50 ohm to them you will only loose 0,2dB at each connection. But then most receivers and antennas will have an impedance that are not 50 ohm all the time at all frequencies. CATV splitters usually have some 20dB isolation between ports, the same as a Stridsberg multicoupler.

I've found that many connector adapters from China work poorly so try and instead get pigtails with the correct connector at each end.

/Ubbe