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

Works perfectly. Needed something that shipped with Prime and this fit the bill. This is the same exact bias tee board you can find in all other marketplaces but without the wait. Successfully powered this via USB and also designed a little enclosure to help reduce EMI as noted by another reviewer.

When you need to feed power up an antenna cable, this works well in the higher frequencies it was designed for. Quality was good, has a low insertion loss at GPS frequencies I used it for.

This does a good job. I was skeptical of EVERYTHING China electric, but it has zero leakage on the output. A trimmed USB cable can be used for input while tucked inside a small project box.

The workmanship (soldering) on the unit I received was simply atrocious. I don’t have time to wait for a replacement, so I had to rework it. Give this one a pass.

Been using this for a few months with a minimum of 12V, but I am not sure if this really works. It power on, but I don't really notice a difference in reception. I don't have the tools to check this if it really does works. The version I have, seem clean and free from defects. I will continue to use it and see if anything changes and I will update.

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.

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.

The input is not quite sensitive enough for direct hookup to a car antenna. It would be best if this was the second stage of a ganged amplifier. However, the S/N ratio is good enough to do this - IF you feed it well filtered power, well isolated from the alternator.