HiLetgo® 0.1-2000MHz RF WideBand Amplifier 30dB High Gain Low Noise LNA Amplifier

I've tried a few of these cheap Chinese preamps and most suck, but this one boosts the signal (and noise of course) from both tuned shielded receive loops and untuned loops on topband and 80m, allowing me to phase receive antennas against my main transmit antenna (3/8 wave inverted Ls on those bands) and null out local interference - or to phase receive antennas against each other. Obviously they work better right by the loop. I used a 12v supply with them. The actual noise figure of the amp itself isn't something I can test.

Works well. Using on 137mhz ( Pi SDR server) & 156/7mhz (traditional scanner). I do have an FM band stop filter fitted before the amp. Fast dispatch. Recommend.

I have only so far used it on HF below 30mhz and it does pull up the signal, however it also lifts the noise, when using a 9v battery there is a big drain in battery. I bought a voltage dropper which dropped the 12v Motorcycle battery down to 9v, i then ran the unit for 24 hours receiving FT8 signals on my SDRplay and hardly any voltage drop. I haven't yet used it on 1090mhz as another buyer did but intend to do that quite soon, all in all worth the money.

Update: Following my initial review, I’ve been contacted by the seller. They are very keen to ensure customer satisfaction and have shipped a replacement unit, free of charge. When it arrives I’ll give it a try and update again.Absolute rubbish. Didn't work at all, if anything, it's a 30dB attenuator. Build quality looks shoddy, especially where the MMIC is soldered in place.

Gave approx 20dB gain with an 'in the loft' home made dipole for HF reception, using a 9 volt power supply. But must be placed at the antenna end of the feed and not the receiver end so as not to amplify the 'noise' as well.