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The drop in gain above 2.2 GHz is very consistent and has fully been compensated in the factory calibration. Above 6 GHz the ZS405/406 LNA is useless and better be disabled -- Designer of the

Test 13 is the attenuator test Search the wiki for the detailed attenuator test (linearity) -- Designer of the tinySA For more info go to https://tinysa.org/wiki

Is it a computer that has both USB2 and USB3 ports? If yes try a computer that has only USB2 There is a known incompatibility with USB3, check the WIKI and the user group

The error I get on my laptop is "Unknown USB Device (Device Descriptor Request Failed)". It seems I must have a defective/failed USB port on the SA. The SA works well in every other respect. -- 73 es

Most of the attempts are 2.0. The primary connection I am using is 2.0. During my "various" ports attempts I did try a 3.0. -- 73 es God Bless de KK1L, Ron <><

From your description of this new feature, disabling AUDIO AGC changes PA4 from demodulated audio to a DC voltage that tracks the signal level. If that’s correct, it seems this function operates

Changed out U14 LNA and Tests 10 and 14 are now good - only Test 13 fails. Is this Test 13 failure from U22 being bad? I also bought a few of them when I got the LNA chips Thanks -Paul

Are you attempting to use a USB3 connection? ________________________________ Sent: Wednesday, February 26, 2025 3:47 PM To: [email protected] <[email protected]> Subject: Re: [tinysa] USB / Serial

The LNA is only good up to 2.2GHz, thats according to Mouser. Since the LNA, when turned on bypasses the attenuator, do we have to expect large errors in gain beyond 2.2GHz? It looks to me that it can

I am having this same issue with a new Ultra+ ZS-406. Was working great on my computer talking to tinySA-app yesterday and earlier today. I set up TCPUART on my phone to try using the unit remote, and

It's difficult to see in the photo but it seems the yellow trace does not go up to 0dBm at zero Hz If this is indeed the case there is another problem which can not be easily repaired -- Designer of

I followed the procedures in the link sent to my email. https://tinysa.org/wiki/pmwiki.php?n=TinySA4.FaultFinding In the test, where 30 MHz is enabled and the analyzer is returned, my tinysa ultra

Hello Jorge, LNA U14: BGA2817. e.g. Mouser part# 771-BGA2817115 73, Thomas (all parts from another posting: - Input RF switch U22: XA17-G4K? ? or AS179-92LF ?(mouser 873-AS179-92LF) - LNA U14:

https://tinysa.org/wiki/pmwiki.php?n=TinySA4.FaultFinding

Hello again, Just for update about the thread, I've disassembled the TinySA and remove the U22, the RF Switch, and replace it by 0R jumper joinning traces. The result is that the power values from

2 volts peak to peak is +10 dBm if you have a scope.

I've added a page to the wiki describing some steps for manual fault finding. Could some of the users that have (had) problems with their HW have a look at this page and check if it helps them

Thanks for the quick response!

Dear all, I've been playing with my TinySA, and I think I've passed the measure power limit during some test and now my device doesn't measure correctly. Probably I exceeded the +6 dBm. I've

This is a broken LNA Suggest to contact your supplier -- Designer of the tinySA For more info go to https://tinysa.org/wiki