Hi,

Here's what I did.? Let me know if I need to perform any steps differently.

Mode / Cal Output: 30 MHz
At the 30 MHz measurement I did:
CONFIG/MORE/LEVEL CORRECTION/INPUT LEVEL
Then entered: -26.2 x1

I did my measurements again and it's still at 33.5 dBm.

My wattmeter is a Surecom SW-33 Plus terminated with a??5-20W DUMMY LOAD.

I guess my question at this point is it time to get ahold of a new TinySA and see if my current unit may be messed up?

Thanks,

Brian

Re touch calibration. This is done on the NanoVNA with Dislords software, so it should be possible to make it for the TinySA.

73/Torbjorn/SM6AYM

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On Mon, Dec 12, 2022 at 07:45 AM, Mike C. wrote:

Hi All,

Has anyone taken note of above subject, specifically how it may interface or be part of our tinySA Ultra?

Mike,
? "atten:Input the 10M reference of the spectrum into the machine, set the center frequency to 10M, and reduce the SPAN from 4M to the smallest SPAN."

? Seems to have been designed for a spectrum analyzer with a 10MHz reference output which the tinySA Ultra does not have.

Herb

_._,_._,_

Hello,

I think, it is an up-converter=mixer inside. The 10Mhz reference input is the local oscillator of the mixer.

It is up-converts the 0-2Mhz range to 10-12Mhz.

Joco

Simple idea FWIW. Nylon rod, tapped 1/4x36 on one end, with a tapered notch into a 13/64 hole 3/4” from the other end.

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Thanks, never considered that.

Rich

Is it possible to move the calibration points for touch calibration a little bit to the middle of the screen? At the moment they are exactly in the corners of the screen. You need a very thin pen to calibrate. Most of touch pens are a little bit bigger and you can't reach the corner exactly.
--
Klaus, DL5KV

Thanks Kurt for this and other video's.
It is interesting that someone like you with a good assortment of microwave test equipment has such a passion for the new ultra.
Mine is on it's way and i am studying anything related to it with great interest.
Like many others just got some old gear and started playing with it and got better with all
the functions and where to find them ( with my bad memory ) and got a tinysa a while ago, more playing.....

My jaw dropped when i saw the screenshots going up to 18 gHz, That's just wild and i hope we get more video's to show how it's done
and where it leads, special attention is required to not overload the ultra with lower freq's such as capacitive coupling etc.,

Good to watch the information storm and learn from it, Eric is such a wealth of knowledge and quick to apply things.

Best of luck and thanks for your contribution, Max.

The tinySA has 57 different resolution filters but not on the exact 1,3, 10 grid

I am not saying this an issue.

When you set the RBW to 10Khz on the TinySA the display shows 11Khz, on the Ultra it shows 10Khz.? Same with 30 khz.? The TinySA shows 32khz while the Ultra shows 30khz.

I am just curious why they are different?

Rich

On Mon, Dec 12, 2022 at 07:45 AM, Mike C. wrote:

Hi All,

Has anyone taken note of above subject, specifically how it may interface or be part of our tinySA Ultra?

Mike,
? "atten:Input the 10M reference of the spectrum into the machine, set the center frequency to 10M, and reduce the SPAN from 4M to the smallest SPAN."

? Seems to have been designed for a spectrum analyzer with a 10MHz reference output which the tinySA Ultra does not have.

Herb

On Mon, Dec 12, 2022 at 07:50 AM, Mike C. wrote:

".... kill it in what way?"

Destroy the flash memory used to store the firmware
As it is not possible to predict or detect switching off on time you would have to write the current state to flash at regular intervals and this quickly exceeds the maximum number of write cycles.
?
--

What type of wattmeter are you using and how is it terminated?

If is not terminated with a 50 ohm load (i.e. a mismatched antenna) the power reading may be in error.

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??? ".... kill it in what way?"

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Hi All,

Has anyone taken note of above subject, specifically how it may interface or be part of our tinySA Ultra?

Mike C. Sand Mtn GA

PS: It's on ebayism (not exactly a stellar recommendation)

On Mon, Dec 12, 2022 at 07:24 AM, hwalker wrote:

? Better to use tinySA-App

Erik & Herb,
sorry... my fault... used nanoVNA-App.exe - and not tinySA-App.exe
Still, on tinySA.exe and on 'VMA Spectrum Analyser for TinySA' there is this + 45dbm offset

Stored.csv values on the SD card showing the correct level.
A little bit tricky for the Ultra right now - as long as one is not in the self inflicted confusion, as I have been ;-)?

mea culpa gentlemen

Wolfgang

Wolfgang

Can you measure the 30MHz cal output and, when is measures -27.8dBm, do
CONFIG/MORE/LEVEL CORRECTION/INPUT LEVEL
and enter -26.2 as actual power
This should remove some of the difference.

--

Yes,
Do you have any data on the accuracy of the watt meter?
--

?The only other behavior I questioned is that my Wattmeter for the handheld doesn't read anything when the radio is connected with the attenuator in between it and the wattmeter.? I'm assuming that the power into the meter is too low to read with the attenuator?? It's not the most expensive thing.? Does that make sense?

Thanks,

Brian

On Mon, Dec 12, 2022 at 07:01 AM, Wolfgang OE1MWW wrote:

...that is, what the nanoVNA 211 sotware (sorry, typo last time) sees in the 'Settings 'Firmware' field.:

? ? NanoVNA-App was written by One-of-Eleven for the nanoVNA but she also supported the tinySA to a certain extent because it's console commands, especially scanraw, were similar.? One-of-Eleven no longer supports NanoVNA-App and has released it into the public domain.? DiSlord has stepped in and updated NanoVNA-App but it does not fully support the tinySA Ultra.

? Better to use tinySA-App instead which is supported by Erik and works with both the tinySA and tinySA Ultra.

Herb