Bias Tee,10MHz-6GHz Bias Tee Broadband Radio Frequency Microwave Coaxial Bias Low Noise Amplifier Module.

Bought this to power several different low-noise amplifiers I am using with my software defined radio. Its worked flawlessly with a GOES LNA at 1.7 GHz, a NOAA satellite LNA at 137 Mhz, and an active GPS antenna at 1.575GHz. Haven't noticed any signal degradation by using this instead of an SDR with a built-in bias-tee.

-3db loss at 200 Mhz, -7dB at 100 Mhz, -15dB at 30Mhz. Didn't check above 1 GHz. So specs are wildly optimistic and misleading, but it still might work in your application. It is a nice case, so I may just try a larger coupling cap and call it good.

Used to provide power to an active gps antenna.

Working As it is supposed to

Works great.

Shorted when turned on, there's poor construction and there's this, case didn't fit PCB and someone just jammed everything in, bent the connector pins, ugh.

First: The one that I'll say "works" is not exactly as advertised. It is supposed to be a Bias T that works from 10MHz to 6GHz, but that is NOT the case. I tested the RF throughput response (see plots) on a calibrated Keysight N9918A VNA and found that there is a significant variation of response (with in 3 dB) in what is supposed to be the passband, which is from a bout 200MHz to nearly 5 GHz - certainly not 10MHz to 6GHz. The low band rolls off significantly below 200MHz and is below -40 dB at 10MHz; likewise at 6GHz the response was -10dB.Second: The broken unit was due to a solder blob shorting out the RF+DC SMA port. This is really troubling because this shorts-out out any DC power source you apply to the DC input terminal - which could cost you a power supply if it wasn't short-fault tolerant. I removed the solder blob and swept the repaired unit got a similar plot to the other unit.Summary: At this price point you will have to expect to be hands-on as a hobbyist. I strongly encourage everyone to do a check with an ohm meter to make sure that DC port is not shorted (or just open it and look to see if the soldering is ok). If you have access to a spectrum analyzer with a tracking generator or an VNA, it is definitely worth your time to sweep it before using it. But, on the other hand, if you are a building projects and need a cheap case with SMA and a DC feed though you might want to but it just to gut it to repurpose it - that's why I bought it.Giving 2 stars seemed about right since it does have some value. I see from other reviewers that purchased it for GOES band satellite receivers and at that frequency it should actually work well enough (esp. on the output side of the LNA). It really depends on how knowledgeable you are. I would have given 3 stars had the one of the units not been shorted out. Such a situation would likely damage a power brick you attach to the unit.Best of Luck