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Hi flynth, I'm very sorry, we did notice that the audio interface may be damaged, and expect that we'll be able to start selling the improved tinySA ULTRA plus by the end of this month. You can

Hi, First let me say I'm glad this device exists so I don't have to lug my 35kg 40 year old SA around... However, having said that I have to point out a serious design flaw (and rant somewhat that

How do you expect to expose the SA to 50 watts? Are you cabling directly to a transmitter? If so you don't worry about power outside your transmission freq (and its harmonics).

Can I suggest stick to dBm, using dBw, dBc etc will most likely confuse some people. [email protected]> wrote:

Well, the recommended maximum input power (and that even totaled from outside you viewing window) is -25 dBm. 50-watts of power is +47 dBm. 50-watts = 10[log(50)] = +17 dBw Adding 30 dB to

It's Christmas, Just got my TSA and I'm having a ball expoloring. Q: I'd like to get an attenuator so I don't ruin this little gem. I expect to be using this for a breadth of the RF spectrum ie.

Earlier, I wrote: "Maybe I misunderstand why anyone might want to connect the output port of an active transmitter to any port of a TinySA." Thanks to all that pointed out, in various ways, that

Using filters when measuring a transmitter is fraught with problems. Without suitable attenuation *before* the filter the transmitter can see a very poor impedance which can have a significant effect

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Just to give an idea about the dynamic range of the tinySA when measuring harmonics here a measurement of the harmonics of a 11 MHz signal Input is at -25 dBm All settings default Set to

Exactly. I have used diplexers to properly terminate the fundamental into a dummy load. But then the fun becomes building and characterizing the diplexer itself.

Let's give people the dBm view. 5W = 37dBm (approx) 0.5W = 27 dBm 0.05W = 17 dBm 0.005W = 7 dBm 0.0005W = -3 dBm 0.00005W = -13 dBm 0.000005W = -23 dBm, ie 60dB attenuation this is in the measurement

Most filters present quite a complex load impedance when used out-of-band. The filters may or may not influence the levels of harmonics or spurs indicated on the SA. Dave -

As John Cunliffe said in this forum (/g/tinysa/message/9655), when measuring harmonics, you can use well defined high pass filters that suppresses the fundamental, for exemple, by

Well if you want to measure spurious outputs from a transmitter the Tiny Sa can do that easily, but you must use an attenuation to keep the levels within the allowable limits. Some take the harmonics

One of the primary uses of a spectrum analyser is to do various measurements on a transmitter; such as harmonic levels and spectral purity. These cannot be done accurately without a direct connection,

Never stellar, my aging mind deteriorates faster than I am aware of. I do understand why I should use an attenuator to protect various pieces of equipment from "excessive" rf. Maybe I misunderstand

Does anyone read the specifications? Or they may read them but have absolutely no understanding of what they entail. Yes, for faithful representation of the input, -25 dBm is specified. In an

Please keep in mind that you may get a high power "key click" when you activate the transmitter that could take out the front end of your Ultra whatever method you use.

I'd agree with Bruce, just observe the occupied bandwidth of your transmission, using a suitably narrow RBW setting. It will be close enough to the desired value. Regards, Martin