Low Noise Amplifier Module, 20dB High Gain LNA Metal 0.1MHz6GHz Full Band RF Amplifier SMA Female Head for Remote Control Receiver for FM Radio (Shipped with Built in Battery)

Now my SDR have a linear amplifier, recommend buying this from this seller its compatible with HackRF One SDR.

A decent preamp for the price. Looks to have input overload protection and can be powered by a bias tee on the coax if needed. I took the battery out of mine as it will be powered remotely. Nice little case. The 20 dB gain seems legit, at least to 950 Mhz; I didn't check higher, but construction looks questionable for higher microwave frequencies. See simplified schematic and pic of the guts.

I not only love the quality of these rf amps, but they have a quality look to them as well.Using two right now on my base scanner, and they've helped to gain much better coverage, and even made more distant frequencies clear (in a very rural area).Sure hope they don't raise in price, cause I'm planning on trying them out on an old portable (radio shack pro-97) :)

good amplifier

Works as advertised, battery life drops off a cliff though.

Fast delivery, good price, works well on UHF satellites.

Great for my purpose

Boosts signal and increases noise 10 fold I don't know if I have a dud but this is garbage.