External Antenna --needs 4 way splitter

[XPS720]

I am now using an external vertical antenna that covers 30 MHz to 2000 MHz and I use 3 scanners. I ask you all for help in getting a proper splitter for my antenna. I look for one that has 4 way output with power booster. I know they make cable splitters but they don't cover my range. Do they make a splitter that cover's 30 to 3000 MHz?

 

[kj4jaq]

R&S®ASDU02 Antenna Signal Distribution Unit | Overview | Rohde & Schwarz (rohde-schwarz.com) probably going to be pricy being R&S

 

[Hit_Factor]

Scanner splitter or diplexer?

One cable coming in that has to go to separate scanners, possibly three. What's the best low loss way to split the signals to the receivers?

forums.radioreference.com

 

[MTScannerNut]

Was going to recommend Stridsberg, but I don't think it covers the range you need.

 

[kj4jaq]

Was going to recommend Stridsberg, but I don't think it covers the range you need.

Same, that is why I suggested R&S model, has one for HF and also everything else. Most of the time when someone doesn't put a pricetag on something electronic online it means it wasnt meant for me to purchase.

 

[KevinC]

I am now using an external vertical antenna that covers 30 MHz to 2000 MHz and I use 3 scanners. I ask you all for help in getting a proper splitter for my antenna. I look for one that has 4 way output with power booster. I know they make cable splitters but they don't cover my range. Do they make a splitter that cover's 30 to 3000 MHz?

Do you really need to cover to 3,000 MHz?

 

[vagrant]

Take a look at this MiniCircuits amp as part of the solution. It covers the range and is less than $100. One will need to build or buy a splitter to distribute the RF after the amp. It may be way too much amp at the low end though, even with the loss of a splitter.

I am curious about the vertical antenna that effectively covers 30-2000 MHz and what the OP monitors above 1.3 GHz, or even 930 MHz.

Connectorized SMA, Low Noise, Medium Power, Linear Amplifier, 50 MHz to 3000 MHz, 50Ω | ZX60-P103LN+ | Mini-Circuits

Mini-Circuits is a global leader in the design and manufacturing of RF, IF, and microwave components from DC to 86GHz.

www.minicircuits.com

 

[Ubbe]

A standard $10 CATV 1-4 splitter should work. I use one and it works down to the 80m band, 3,5MHz and sat dish LNB's has outputs up to 2150MHz and the splitter will probably go beyond that. If an amplifier goes up to 3000MHz it should compensate for any excessive loss in the splitter in the 3000Mhz band. There's no antenna that can handle a 30-2000Mhz range without a huge amount of loss to the signal that are received from the horizon. You'll need to use several antennas to cover that range to be able to receive something that can be monitored.

Amplifiers often has some 20dB gain at 30MHz and 10dB at 2000Mhz. Just insert a 10pF capacitor after the amplifier to make it 10dB over the whole frequency range. Then the 7dB attenuation in a 1-4 splitter will be just about right to have a good signal out of the splitter that doesn't overload any scanner. If the amplifier are installed at the antenna it will compensate for up to 3dB loss in the coax. Use a 15pF if the coax loss are more than 3dB.

/Ubbe

 

[prcguy]

I have several of these amps and they are not good for really broad band work, the gain slopes from 25dB at 50MHz to about 7dB at 3GHZ. It would need some serious EQ to flatten or reverse slope that range to make it useful. These amps are ok for a narrower range like maybe 50 to 512Mhz but beyond that the slope is just to much. The gain at the lower end is also way too high which will contribute to it making lots of IMD if your in an area with lots of big signals on a wide band antenna.

Take a look at this MiniCircuits amp as part of the solution. It covers the range and is less than $100. One will need to build or buy a splitter to distribute the RF after the amp. It may be way too much amp at the low end though, even with the loss of a splitter.

I am curious about the vertical antenna that effectively covers 30-2000 MHz and what the OP monitors above 1.3 GHz, or even 930 MHz.

Connectorized SMA, Low Noise, Medium Power, Linear Amplifier, 50 MHz to 3000 MHz, 50Ω | ZX60-P103LN+ | Mini-Circuits

Mini-Circuits is a global leader in the design and manufacturing of RF, IF, and microwave components from DC to 86GHz.

www.minicircuits.com