2-Way Coaxial Splitter, 100-2700M Frequency RF Power Splitter Divider Combiner for Industrial Equipment Electrical

My use case: 700/800Mhz public safety scanning feeding two HP2 scanners from one antenna. Another feeds 2 SDS200, Work - FLAWLESSLY. one I use for VHF air band scanning - one antenna feeds two receivers; one set to 118/125Mhz the other set to 125/136Mhz - as with the PS scanning, the device works flawlessly.

I used a tinysa signal generator and an SDR to do some basic testing with this wilkinson divider and another very inexpensive resistive splitter that I found on Amazon. My primary interest is in the 700-900mhz range - I was looking for something to connect a couple of SDRs to a single antenna for a project. I tested each splitter/divider at 100/250/500/750/800/850/1000/1250/1500mhz and graphed the results. This item did not perform well below 500mhz during testing. The loss at at the advertised 100mhz floor was 24.4db. Loss ranged from -2.1db @ 800mhz to -26.5db @ 250mhz. I would not purchase/use this item if your application is below 500mhz. I was not able to test any higher than 1.5ghz. This seems to be perfect for splitting the 700-900mhz range that I need to work in for digital trunking. I highly recommend this divider if you are looking for a splitter for this range/this reason. I saw no real issues with the solder/workmanship, but this is definately something that I would use in-line and probably not screw an antenna directly into unless I 3d printed a case for it. This is the one I went with after testing.

Doesn’t work with RF 915 , lost most of the RF.

As others have mentioned in their review, this is a Wilkinson power splitter. It is well made. However, it did not perform well at 1090 mhz. I did my research after I purchased the splitter. I then discovered that the splitter was a "Wilkinson". I should have read the review first. This brought me back to my microwave days, microwave101, 50 years ago. There is a web site called "Microwaves101.com" which can answer most of your questions concerning this type of splitter. The bandwidth on this item is definitely not as advertised. I do not possess the equipment to verify the bandwidth, however a little math and careful size measurements should show the center frequency for sure.

Was barely soldered together. The entire PCB-mounted SMA connector came right off when I tried to remove the cover.

Ok for the price

These work fine, I'm using three of them at 1420 MHz with reasonable results. Keep in mind that ideally, Wilkinson power dividers have a 1/4 wavelength length of conductor on each half of the loop. But the specified range is 100-2700MHz?? So that's a 1/4 wavelength range of 75cm to 2.8cm... This board has ~4cm of trace on each side of the loop, so it would work best at 1870MHz. I'm guessing the specified range is supposed to be 1000-2700MHz, because the midpoint of that is 1850MHz. If you're operating in that range, this'll be usable.

If you do DC calculations on what the resistance looking into the input would be, it's not 50 Ohms, but 25 Ohms. So that is not a good match to a 50 Ohm source. The resistor on the board does nothing at DC, as it is shorted out. All of that indicates, as others say, that the intent is to use transmission line behavior to do the splitting. But that could only work at a single frequency, not a broadband as advertised. Beyond that the back side ground connections are not even soldered, and on the top the soldering job is a bit sloppy, and the flux has not been cleaned off. See my attached photos. The photo on the product page shows gold plating on the traces, but the real thing appears to be tin-plated. All in all... not a great product. I'm going to unsolder the SMA connectors and use them!