Thanks for those suggestions; I will implement those in my next revision.? Glad to see the empty grey buttons on those keypad entries instead of the transparent areas :-)

I got my unit a few weeks ago and haven't tried but a small fraction of the features and capabilities yet!? Heck, I just discovered yesterday a feature on my car that I've owned for almost four years now! "What is this button on the steering wheel and I wonder what it's for?" LOL!

You're doing a great job with the firmware.

David

• Go one level deeper on the two calibration menu entries
• Use the data prompt text in the keypad as the large font title above the keypad. The helps to understand the logic of data entry
• All 4 input curve menus and the output curve menus have many more sub menus. Showing these will help to understand how they work

That for the current nice documentation!

--

On Fri, Jan 13, 2023 at 07:34 PM, Erik Kaashoek wrote:

When you have measured and calculated your own correction tables you should keep those.
If you did not do your own tables you should use the correction tables in the new FW

OK, this sounds good. I now spent many days of work to optimize the correction table and calibrate it, because there has to be a bug in the correction function. Every time I reached the end of the correction table and wobbled the tinysa I had to see that the correction has an aberration of 5dB. It seems that there will be overwritten the done calibration points in the further calibration. As I corrected the points by console it works now. But this I have to analyze next week. At the moment I'm happy that the curve is nearly perfectly (except the hook at 2.115GHz). But now the level is +-1dB until 3.2GHz. Unfortunately the signal generator could not generate higher signals.
?
--
Klaus, DL5KV

The following files and folders have been uploaded to the Files area of the [email protected] group.

• /TinySA Ultra Menu-Tree Chart - v1.4-40.pdf

By: David Massey <wd4owa@...>

Description:
TinySA Ultra Menu-Tree Chart - v1.4-40.pdf I've put the final changes in my Menu-Tree Chart draft document and officially release it to the public domain! I will also upload the Visio document that this PDF file was created from for those of you with Visio and would like to customize the document for your use. Enjoy!

---

The following files and folders have been uploaded to the Files area of the [email protected] group.

• /TinySA Ultra Menu-Tree Chart.vsdx

By: David Massey <wd4owa@...>

Description:
This is the master Visio file I will be modifying as changes happen to the menu selections with firmware updates.

On Fri, Jan 13, 2023 at 09:56 AM, Klaus W?rner wrote:

Does it mean, that if I use my old correction values the get wrong measurements with the new firmware?

Klaus,
? If you created a custom correction table using your own measurement equipment, then you then you will always lose the table values if you do a "CLEAR CONFIG" or update to a firmware that clears the configuration.? You either have to re-enter and save your custom values or save the custom table to a ".cmd" file and load it from the "STORAGE" menu.

?If you did not create a custom correction table, then updating to the new firmware should result in improved measurement linearity up to at least 6GHz.

Herb

When you have measured and calculated your own correction tables you should keep those.
If you did not do your own tables you should use the correction tables in the new FW
--

Does it mean, that if I use my old correction values the get wrong measurements with the new firmware?
--
Klaus, DL5KV

The calibration, or better called correction tables correct for frequency dependent deviations
These are independent of what a calibration does.
After a FW update the turns the ref level indicator red you should always do a calibration.
I will not list which of the 120 numbers in the tables changed
--

Well done Erik!!

73
Jeff G8HUL

Erik,

Can you describe the change in the correction tables?

I don't know if it is necessary but I always un a CONFIG LEVEL CAL after upgrading firmware followed by a SELF TEST.

Mike N2MS

A special thanks goes to Kurt as he did all the work for creating these updated correction tables.
Without his attention for detail the performance of the tinySA would be much worse.
--

New FW release?
Version V1.4.040
Changes:
- Lever will change span after doing MARKER->CENTER
- Updated input calibration tables (ULTRA only)
--

I have downloaded this firmware but I don't recall any announcements for this version listing the changes.

What are the enhancements and corrections? I keep a test file with all code changes.

Thanks,

Mike N2MS

The delivered cables failed after about 1 week. The connector / cable interface at the shield came lose. I have since replaced them on both units with commercial RG223 cables of about the same length.

Hi Eric
I have spotted a bug that seems to be in both original & ultra.

with frequency entry set for Center and after doing a Marker to Center, the jog button will not change the Span either up or down despite the little triangle being next to Span at the bottom of the screen.

73
Jeff G8HUL

开云体育

I would hesitate to put a longer antenna on the tinysa or nanovna from a mechanical point of view - it will put a lot of strain on the sma and could ultimately break the connector from the pcb.

It needs to be remembered that the whip part of the antenna, is only a part of the antenna. The other part is the case of the instrument and whatever else the case is "connected" to, i.e. it's the counterpoise.? Striving for a particular length makes little sense, unless this is taken into consideration.

Wes? N7WS

Commercial cable manufacturer specification sheets often identify the minimum bend radius for the cable. ? ? In my professional experience, stranded conductor coaxial cables generally fall into to the ‘10 times cable diameter’ category. ? So a 6mm diameter cable would have a minimum bend radius spec of 10 times this (60mm).? ??

On Fri, Jan 13, 2023 at 12:08 PM, Erik Kaashoek wrote:

A quarter wavelength is optimal.

See my quick NanoVNA screenshots, measured with the?tinaSA original antenna:

minimal length (9 cm)

maximal length (30 cm)


For FM radio or 2m band I would take a longer antenna, or just order a long and a short one to be more flexible.

Martin