TaidacentDC Feed Bias Tee RF Microwave Bias Active Antenna Power Supply Mains DC-Blocker 10-6000MHz Amplifier DC Bias

Make sure to mount down line from the antenna. It is best mounted Infront of the USB dongle. If you try to mount it directly behind the antenna it will short out. If you mount it in front of the USB dongle it should work just fine. As seen in the photo this bias tee is powering a small PCB yagi in order to pull a wifi signal from my church (also seen in photo) from 300ft away. 10mbps was achieved and the signal is so strong it can easily be picked up around an entire block radius when I run the hotspot.

Needed to add an active GPS antenna to a system that didn't provide antenna power - added this Bias Tee and things are great.

Despite the product name containing the string 10-6000 MHz, this bias tee takes a nosedive above 3 GHz and is down 20 dB by 4 GHz - see attached lab measurement. Below 3 GHz it's OK - the mechanical construction is iffy: the blue plastic power header is flimsy and the SMA end launch connectors look like they soldered on by a toddler. But it works OK below 3 GHz and is cheap. I think I'm just going to go make my own bias Ts because I need to get up to around 4-5 GHz with my next design. Maybe I'll sell them on Amazon ...

Simple, basic item. Well made and functional.

There is solder splattered all over the board on both sides and the solder joints were obviously rushed. The screw terminals were tightened ALL the way down.That said, it will probably work without issue once you clean it up.

This bias T properly puts DC onto the line so that you can power a circuit such as a preamp or active antenna. If the cable is too short it seems to overload or shut down but in normal operation it seems to work ok.

The media could not be loaded. This simple circuit provides Bias-Tee, a way of sending power down a coax line in the opposite direction of the signal so that devices like amplifiers can be powered. This does NOT amplify the signal itself, rather it simply provides electrical power to devices connected in line with the antenna so that you don't need to provide those devices with additional power, like from a wall socket or a USB port. All amplifiers require a power source, and so often they have to be plugged into the wall, but using Bias-Tee, you can send power down the same wire you use to connect your amplifier to your receiver and spare having to dig up a power cable and find an open jack.And this circuit does the job. In the video I shot, I provide 13.8v of power to the circuit and it provides the Bias-Tee powering to the amplifier I connected in line bringing up the RF signal. 13.8v is perfect as this is usually the voltage you'll find in ham radio shacks anyway. And the draw is super small, about 0.15 amps.Due to there being no shielding, this does create some RF noise that is quite noticeable in the HF band, resulting in big diagonal lines in your waterfall. But at VHF and above, I didn't notice any noise. And the easy answer is just to put this into a box of some kind. Works great!

Mine started smoking up like a short circuit from the 2 capacitors pointed in my image. I used a 5v power supply from the recommended 12v. Also, everything was connected right the instructions are pretty clear but the tee started to smoke up and not even the PWR led would turn on. I ordered a replacement I'll update soon.**Update**Well I got the RF Tee. I put 5v to it and it worked good no smoke. Then I switched it to 12v dc and it flared up the 2 capacitors turned red and smoked up. I'm not sure what's going on I'm confident I have every thing hooked up right my setup looks the same as one reviewer on here. I also double checked with a multi-meter for polarity check but I got the same results as if 12v is to much for this device. Unfortunately, I will be returning again. Gave 2 stars since I was at least given another chance to try out the device.