Banggood

Fast delivery It did not exactly fit my needs and expectations. The analyzer needs at least a 30dB amplifier otherwise it is as deaf as a stone. It does not even indicate a a local FM radio station with an VHF antenna attached to it - unless an 30dB amplifier is in series with the antenna. I intended it to use on the IF exiting my FT1000D as a spectrum display but the bandwidth and resolution are not sufficient for such an application. The lowest span is 3Mhz and the lowest RBW is 5Khz /Kc. The

Improved version with screen that can be used stand alone without needing a computer to see results. Works fine but for lower signals a 30 Db amplifier is recommended. I've ordered one but iy hasn't arrived yet (or maybe is waiting me to pick it up at work when Coronavirus crisis ends). I've also ordered a battery toavoid having to power it via USB for full portable use.

This device does in fact display the spectrum of RF signals in the frequency domain, not Sure that the term analyzer is appropriate but it is billed as simple and handheld, generally it does work. The UI is a bit odd but once you get the hang of it, works well enough.No way to move a measurement cursor to a particular Displayed signal , which makes it awkward to Center the display onto a desired signal. Others have recommended it would need an RF amp to boost the sensitivity to enable “over the

Aparentemente funciona bien aunque tiene poca sensibilidad, ya que tiene un solo control es algo complicado de configurar para una medición específica ,no provee manual de uso, esta versión esta mejorada ya que trae instalada la batería, también incluye antena y cable USB. No indica el nivel de batería.

RBW does not show 10,50kHz for my item. Please publish the normal firmware. Since there is a SWD port on the board, I think it is possible to write to the CPU. I would like to update the firmware at my own risk. The mixer IC has a built-in terminating resistor. No external terminating resistor for RF_IN is required. As it is, VSWR = 2. Replacing the 470uH inductor on the back of the board improved the noise floor by more than 10dB. My item has improved from -63dBm to -76dBm. But when I put the

I bought it to check the audio/video carrier frequency on old RF game consoles, which it does ok, but it's not easy to see the accurate spread. For the price it's amazing.

Switch chattering is not sufficient and operation is difficult.It's a good product, so I'm a little disappointed.The USB connector was deformed and did not stick. I fixed it myself.

This thing does not respond at all; neither at a PC nor at a charger (is there any battery inside ? ). Is there any manual available for it ? It came without any papers.

This thing does not respond at all; neither at a PC nor at a charger (is there any battery inside ? ). Is there any manual available for it ? It came without any papers.

ottimo prodotto, un pò poco sensibile ma rimediabile. assistenza stupenda