Some of the users of my VMA Simple Spectrum Analyser software have pointed out that there is this rather new device being sold on AliExpress:
The first thing that strikes the eye is the price of just US$55.68/€49.98 and that includes shipping!
And yes, it comes with two ADF4351, which means that this device is a direct competitor to the NWT4000 - at less than the third of the price! How is that even possible?
Well, I ordered one to check it out...
I had to wait a long time for the package to arrive, due to the fact that I placed the order on the first day of Chinese New Year holidays (they deserve holidays, too), which meant that the order took two weeks to get processed. Another month later, it arrived without having gone through customs, which was nice.
The package included:
- one D6 device - just the PCB without any case, as shown in the folloowing two pictures
- one rather high quality USB cable
- two SMA cables
- a small bag with three M810 IC's - note that these are the components that break if you attach a DC current to the IF or if you exceed the maximum input power (I think it is +10dBm, but I normally don't dare to go above 0dBm)
Important: These STL files are for board revision 2.03. It seems that there is a newer revision 2.03B, which has a different footprint. Measure your board before printing this case. If your board is not 99mm x 74mm then this case will not work.