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dBuV is fine and well defined, it is dBu (ie without the V) that is confusing and inconsistent. Jeff

Otto, Let me see what can be done to get rid of these -- Designer of the tinySA For more info go to https://tinysa.org/wiki

On 22/01/2025 03:24, Otto Schellin via groups.io wrote: > I just received my ZS-407 from R&L Electronics. I do frequency coordination for > large events and the most common frequency range for

I just received my ZS-407 from R&L Electronics. I do frequency coordination for large events and the most common frequency range for wireless devices is in the 470 MHz to 608 MHz UHF TV band. I set

No need to feel embarrassed. ?The tinySA takes some time to get familiar with. ?We are all in this group to share and learn from each other. ?Have fun with your new device. Roger

" You should only engage the LNA when your other efforts to pull a signal out of the noise have failed..." You don't know what signals are there *unless* you try the LNA. You can always turn it off

Thank you so much! You are absolutely correct! Of course, the scope was still set to the 10x probe endorsing to increase sensitivity on the TinySA. I am totally embarrassed now and feel sorry to have

With things like that the only way to know is to try.? Some electronics instruments (my RF RMS voltmeter for one) and musical instrument amplifiers have a switch which allows floating or grounded

When figuring power levels, assume that something will go wrong and it will transmit at full power.? To do otherwise is to court disaster.? You can tweak levels once you have a working, stable

You cannot connect this way and expect to get good results.? When you connect a coax cable to the T you are loading down with an impedance that will depend on the length of the coax and the scope

Thank you Roger, this gives me some piece of mind.

No this is not a problem.? The tinySA noise floor gets worse below 1 MHz.? due to circuit limitations.? Mine is the same as yours as shown below. If you turn on the LNA it goes about 20 dB

I'm having a hard time squaring all the different calculations proposed in this thread. Let's say that for starters, I want to view/compare the harmonics from several HTs. The 40db attenuator has

I concur with Lutz’s findings in Problems 1&2 and the noise floor profile. (I think Erik may have described the reason for that.) Following…

Not using a probe going in directly with a BNC T and a 50ohm terminator when open ended. Scope input is 1M|15pF. Again, initially I did not expect that after the requisite calibration this TinySA

Remember to set your scope probe to 1 not 10. vy73 OZ4HZ

Hi to all. Right now I'm using TinySA Ultra for conducting some test in order to reduce some harmonics around 700Mhz on my product. The issue is that the TBTC2 tem cell is able to catch a lot of

Another good method to ease measurement of harmonics is to build a simple diplexer (a highpass filter behind a 10dB or greater attenuator will also work) and separate out the fundamental from the

On open ended generator to output to scope -> yes, otherwise no because the TinySA input provides 50 ohm impedance, right? BTW, I just found out that the level difference can be accounted for in the

It uses FET switches and measuring the tiny amounts of distortion produced by them is a very difficult undertaking involving carrier phase and amplitude cancellation techniques.? It will not be an