

What differentiates TinySA from Nano VNA is the TinySA includes switchable input attenuators. The HBTE and tinySA groups.io have a lot of great information regarding. Really neat experience for RF design studies and learning too. Really neat what could be done with the cheap SI4432 modules, the variety of cheap MCU’s and now to see a marketed product I even own. There is even a branch that is open source (last I knew) now called the simpleSA that is based off the original tinySA design. Ham Radio Crash Course has a video also regarding: Here’s a link with the newer videos noting how to use for better performance: TinySA can also be used as a signal generator so with two tinySA’s you can make a tracking generator.

With Spektrum or GRC, from what I’ve done, you can get a slow sweep so to have a wider bandwidth at the cost of sampling rate with the RTL-SDR’s. Small and stand alone operation too… no computer or portable pack required or ~-70db noise floor. Yesterday there was an auto attenuate firmware upgrade. Works well below -30dB so consider using with attenuation or signals of interest. Significantly better bandwidth and a lower noise floor ~100dB for the frequency range spec. Posted in Tool Hacks Tagged nanovna, spectrum analyzer, tinysa Post navigation If you only need audio frequencies and you want novelty, try some ping pong balls If you have a modern scope it may already do this function, or you might be able to do a software solution.

shows a few oddities that he didn’t like, but overall, it seemed like a good value. There are some limitations, of course, but the price is right. But at this price, having a dedicated instrument might be worth it to you, especially if you don’t care about frequency below 100 MHz.

