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Post 516 gives a link to the datasheet, for a? B39431-B3555-U310 That SAW can deal with 10dbm max, so the ADE-25MH does give additional dynamic range. I would like to see more about the protocol

I haven't fully figured the needs of a high end version of your tinySA Nor have I figured out the Si5381, but you should have a look at it:

Well Eric, the obvious next step is to put it all in one box so it is a true stand-alone SA. If you added a Pi with a large touch screed display to run the equivalent of your SA.exe app, youve got it.

A tiny display would be cool, and maybe useful once people get used to the idea of a spectrum analyzer that doesn't have to roll around on a cart. Me, I'd be very happy just to have something cheap

Eric, Great Stuff!!! I assume "the switch" is the small IC on the Si4432 module (a PCB assembly that we buy) that selects either the TX or RX port from the Si4432 to be connected to the module antenna

Doing some experiments with the very cheap OLED display It is readable showing -120dB till 0dB scale and 100 frequency bins, but only with glasses Now I need to add some buttons for full local control

As the AD9851 modules are? becoming scarce and much more expensive it would be nice if the TinySA could be used as a signal generator. The whole signal path from input to the RX SI4432 is

Yes. You flip the switch but you still have to set the first IF to zero otherwise the first SI4432 sweeps at an 434MHz offset When run as a receiver the IF should be set to zero because the SI4432

Great! Erik, you are on top of it, thanks. If you flipped the switch before init, the LO one would become the RX, the rx one will be the LO one but it’s tx goes nowhere... so will work, no? Your

I already changed SA.exe and Arduino SW to allow selecting which SI4432 is used for signal strength measurement. Only need to test You can indeed also put a HW switch on the nSel line, but both SI4432

Could we just put a switch on the nSEL line? 73, Gary WB6OGD

YOu need to decouple at least one of the SI4432 modules from the other components, either the LO SI4432 from the mixer of the RX SI4432 from the 434MHz filter. As at the moment you can not choose from

Erik, Could the LO Si4432 receiver be used ( ie: an SMA input separate from the main SA input) for this? 73, Gary WB6OGD

In the TinySA two SI4432 are used, one as a fixed frequency signal strength detector (the RX SI4432 module)? and another to sweep (the LO SI4432 module) but one single SI4432 is capable to do both so

I added a "Auto settings" button to SA.exe This button sets all settings to meaningful default values except the IF and detector configuration on the settings tab (as these should never change for a

Good suggestion, I will implement as currently the SA.exe remembers all settings and comes back in its last state, but the source may have changed.... -- HBTE Files section:

Bill, I intend to compare the performance of my more traditional build 2GHz SA with the tinySA. Phase noise, resolution filter performance, noise level, IIP3 etc. If the SI4432 is doing well it could

Erik… You have done a marvelous job here…. but what is your goal? Do you have equipment operating up in the 4Ghz+ range that needs attention… or is this just to do it just because? Most amateur

Hi Erik, Thanks for the latest improvement. You may see some new reports in the new year as some of us have parts on order from China and Poland. One of the features Tony G3PTD and I used on our

Erik, No, I don't have experience.. actually I do not have any experience with a real spectrum analyzer, hi hi... Have experience with? a lot of oscilloscopes with AUTO button, real handy. Yes,