Hi Erik,
I just noticed that the Ham Band shading is incorrect for three of
the USA band allocations. (I didn't check bands above 800MHz.)
The 75/80 Meter band is 3.5 MHz - 4.0 MHz, but is only
shaded from 3.5-3.8.
The 40 Meter band is 7.0 MHz - 7.3 MHz, but is only shaded
from 7.0-7.2.
The 6 Meter band is 50.1 - 54.0 MHz, but is only shaded from
50.0 - 52.0.
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Re: Quick general questions on persisting the calibration data
Thank you Erik.
Regarding the level calibration for the higher part >5.34GHz, would a square signal with lower fundamental (e.g. 1.78GHz) containing a strong harmonic at exactly 5.34GHz be sufficient, or do we need a clean tone (mayby suppress the fundamental with a highpass)?
?
Thank you for the "reset" advice. Well unknowingly I used it a couple times... Alternatively using "clear config", will this for sure delete everything related to calibration towards factory defaults?
?
Thanks again, I admire your good work!
Greetings from Canada
Lutz
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Re: Quick general questions on persisting the calibration data
On Thu, Jan 23, 2025 at 10:05 AM, <lschafer@...> wrote:
On a Z405 SW ver. 1.4-156 will saving the config (Menu: Storage|Save Config) also save all calibration data including the tables and individual level corrections?
?
Yes
At the same token, when "resetting" the calibration, will that reinstate the factory defaults on this category and delete all additional level correction entrees (if indeed they are all saved as taken?) ??
?
You should never "RESET" a calibration as the current implementation of RESET is undefined and not updated for some time. I will remove that menu item
?
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A second question: In the "expert config" are undocumented entries: "direct mode" and "linear averaging", what are they, where can I find a complete manual to do my RTFM?
I would imagine that the linear averaging means that when enabled (default ?) it will blend the level calibration (table) pieces where they are concatenated?
?
I've updated the WiKi menu tree for you:
?
--
Designer of the tinySA
For more info go to
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Quick general questions on persisting the calibration data
On a Z405 SW ver. 1.4-156 will saving the config (Menu: Storage|Save Config) also save all calibration data including the tables and individual level corrections? At the same token, when "resetting" the calibration, will that reinstate the factory defaults on this category and delete all additional level correction entrees (if indeed they are all saved as taken?) ??
?
A second question: In the "expert config" are undocumented entries: "direct mode" and "linear averaging", what are they, where can I find a complete manual to do my RTFM?
I would imagine that the linear averaging means that when enabled (default ?) it will blend the level calibration (table) pieces where they are concatenated?
?
Still being new to this and currently trying to calibrate a little better (or perhaps purpose oriented) than the internal automatic calibration is doing.
?
Thanks in advance
Lutz
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Re: Tiny ULTRA. Scan made with in bundle antenna. is it a normal spectrum?
Perhaps you could terminate the input with 50 ohm and see what it scans.?
It should be a near flat line.
?
And don't forget hdmi causes a lot of signals, as does other computer equipment.
?
regards,
?
Henk
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Re: Tiny ULTRA. Scan made with in bundle antenna. is it a normal spectrum?
On 22/01/2025 16:19, nighthawk.eng via groups.io wrote: Hi guys,
Calibrated and did all the things necessary to run it correctly with ultra path
enabled.
Scanned my office with the in bundle antenna and there are for sure both 2.4Ghz
and 5Ghz wifi.
The 5Ghz is not present at all and the nearest frequency near the 2.4Ghz is 2.16.
Is it a normal behavior?
Thanks Did you add a second trace with the "calc" option "max hold"? Cheers, David -- SatSignal Software - Quality software for you Web: Email: davidtaylor@... BlueSky: @gm8arv.bsky.social, Twitter: @gm8arv
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New FW release: Reduce spurs for ZS-407
New FW release
Version V1.4195
?
Changes:
- Reduced spurs for ZS-407
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--
Designer of the tinySA
For more info go to
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Re: wanting to update firmware.......
Mark,
If you are worried about the update, you can always save the FW that brings yours and reload it again if in the new version it does not work.
?
Toni
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Re: wanting to update firmware.......
Dear Mark,
?
if You bought your Ultra from suggested supplier, You got the original.
?
There is no room for further questions!
?
If You're still not sure, You not bougt from suggested supplyer.
?
:)
?
If You worry about upgrading; You do not upgrade! - not healthy paranoia :)
?
- option, not required; - and almost impossible brick Your device! (Since nothing can be ruled out, but the chance is close to zero.)
?
You won't get another answer, You can't get one from anyone.
?
滨蝉迟惫á苍
?
?
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Re: SA Ultra in Listen mode on startup
Keep the jog button pressed to the side during switch on
If that solves the problem do a level calibration
--
Designer of the tinySA
For more info go to
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wanting to update firmware.......
Hello,
?
I bought my Tiny SA Ultra some time ago from the suggested supplier so I am led to believe it is genuine.
?
I have been lurking here for some time and have seen many messages from people who have "stuffed" their Tiny SA ultra's because they bought a clone.
?
I worry about upgrading mine, just healthy paranoia :)
?
Is there something I can post about my Tiny that will tell me that it is an original before I upgrade the firmware.
?
I know Erik knows.
?
I'm not asking for the "secret" to determining clone v original, just want to confirm that mine is original.
?
Thanks
?
Mark
?
?
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SA Ultra in Listen mode on startup
I once turned on Listen mode on my TinySA ultra and shut it down - now it starts up in Listen mode by default every time; I have to manually uncheck the "Listen" checkbox at each startup.
It saves all settings (e.g. frequencies) except the now unchecked "Listen" mode?
?
Version:
v1.4-137-g1806825
?
Is there a way to reset this behaviour to factory default (i.e. start up in normal display mode), without deleting the factory calibration data?
?
Looked at the firmware changelog, couldn't find a bugfix for this particular issue.
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Re: ZS-407 Spurious Signals
I hope to release a new FW that solves this problem later this week
--
Designer of the tinySA
For more info go to
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OK.? Even I've used that sort of TEM cell.? Thanks for the cliarficatin.? I did not read the original posting if I even received it...?? Thanks, again.
Dave - W?LEV
On Wed, Jan 22, 2025 at 6:36?PM hwalker via <herbwalker2476= [email protected]> wrote: On Wed, Jan 22, 2025 at 10:11 AM, W0LEV wrote:
The TEM cell should be a completely closed Faraday volume.? If it maintains its "new" integrity, there should be nothing leaking into the volume.
Dave,
? ?The original poster stated that he is using a TEKBOX TBTC2 TEM cell which is not an enclosed TEM cell.? Our lab referred to that type of TEM cell construction as a Triplate or Strip Line device.? The sides are completely open and therefore the device is susceptible to environmental ambient when not used in a shielded enclosure.
?
?Herb
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On Wed, Jan 22, 2025 at 10:11 AM, W0LEV wrote:
The TEM cell should be a completely closed Faraday volume.? If it maintains its "new" integrity, there should be nothing leaking into the volume.
Dave,
? ?The original poster stated that he is using a TEKBOX TBTC2 TEM cell which is not an enclosed TEM cell.? Our lab referred to that type of TEM cell construction as a Triplate or Strip Line device.? The sides are completely open and therefore the device is susceptible to environmental ambient when not used in a shielded enclosure.
?
?Herb
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Re: ZS-407 Spurious Signals
Hi Otto, Dave and Eric
I took a quick look at my new ZS-407 last night after reading your posts. I too have the the spur described with a terminated input. 533.775 MHz at -70dbm. I didn’t drill down into the carrier, but might do so today before I upgrade firmware to the latest version.
Also it appears it might be intermittent with scan and RBW settings. We’ll see.
Everything else works great. Only thing I noticed was the noise floor across the spectrum measures slightly higher than my other two Ultra ZS-405 units by several db, but I believe an earlier description of the specs mentioned that.
toggle quoted message
Show quoted text
On Jan 22, 2025, at 9:50 AM, Otto Schellin via groups.io <oschellin@...> wrote:
? Yes, I did notice some additional spurs in that tuning range that were at lower levels. Thank you for looking at that!
~Otto
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The TEM cell should be a completely closed Faraday volume.? If it maintains its "new" integrity, there should be nothing leaking into the volume.
I've used a TEM cell some 500-feet from a major cell tower.? I can not detect the emissions from that tower with nothing in the cell and with the cell completely closed.? Further, a major compliance lab. is located roughly 2-blocks from the location of the TEM cell and the chambers leak just a bit of the cell tower emissions.?
"Grounding" is often thrown around as a solution to everything bad with RF.? It seldom solves anything!? With absolutely nothing in your TEM cell and the cell closed, what does the spectrum show when connected to the SA?? With the SA outside the TEM cell or the cell open, do you detect any emissions around 700 MHz?? What is the quality of the coaxial cable connecting the TEM cell to the SA?? Of course, lots of other questions, but that should do as a starter.
Dave - W?LEV
On Tue, Jan 21, 2025 at 10:03?PM nighthawk.eng via <nighthawk.eng= [email protected]> wrote: 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 interference in the area where I live. Everything is floating since the product is battery powered and the TEM Cell ground is connected to the shield of coax cable up to TinySA (used not connected to PC).
?
Maybe grounding everything to the house earth could be a good or a terrible wrong idea?
It could help? The conductive tent is a must?
?
Can you help me in this?
Thanks
?
NH
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Southeastern VHF Conference?2025 Announcement &?Call For Papers
Southeastern VHF Conference?2025 Announcement &?Call For Papers
Quality Inn, 3095 Wilma Rudolph Blvd, Clarksville, TN 37040
April 4th and 5th, 2025
Papers and presentations are solicited on both the technical and operational?aspects of VHF, UHF and Microwave weak signal amateur radio. Some suggested areas of interest are:
? Transmitters, Receivers, Transverters
? RF Power Amplifiers, RF Low Noise Preamplifiers
? Antennas
? Construction Projects
? Test Equipment and Station Accessories
? Station Design and Construction
? Contesting, Roving, DX-peditions
? EME, Propagation (Sporadic E, Meteor Scatter, Troposphere Ducting, etc.)
? Digital Modes, Digital Signal Processing (DSP), Software Defined Radio
??(SDR) Amateur Satellites, Amateur Television
In general papers and presentations on non-weak signal related topics such?as FM repeaters and?packet will not be accepted but exceptions may be made?if the topic is related to weak signal. For example, a paper or presentation on?the use of FM simplex in contests or on the use of APRS to track rovers?during contests would be considered.
?
Formats:
All submissions for?publication in the proceedings should be in Microsoft Word (.doc or?.docx) formats. Submissions for presentation at the conference?should be in Microsoft PowerPoint (.ppt or .pptx) format and?delivered at the conference on a USB memory stick. Please?understand that your PowerPoint Slide presentation will not be?accepted to be published in the proceedings; only meaningful text?will be published in the proceedings, not slides that need?description for understanding.
Paper: Size should be?81?2 x 11-inches.
Margins: Top and sides should be 0.75 inches; bottom must be 1?inch.
Font: You may choose your font, however, try and use standard?fonts. The font should be clean and easy to read?12 pt.
Layout: Either a one or two-column format.
Page numbers: Do not include page numbers.
Headers/Footers: Do not include Headers and/or Footers.
Drawings: Drawings should be embedded in the files. Place them?where you’d like them to appear.
Photos: Color or black-and-white digital images if utilized should be?embedded in text files. Place them where you’d like them to appear.
Printing: We print what we receive. We do not copy edit (but will?correct something if we notice it – or if you notice it and let us know).
We try to make all papers somewhat uniform, but we do not rework?each article. Page numbers are added as we prepare the files for our
printer.?
The deadline for the submission of papers and presentations?is February 15, 2025.?
Please indicate when you submit your paper?or presentation if you plan to attend the conference and present?your paper in person or if you are submitting solely for publication.
Papers and presentations are being handled by Mike Stipick,?KC4RI,?and should be sent to:?KCRI@ATT.net. Mike may be contacted at the same email address if you have any questions.
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Re: ZS-407 Spurious Signals
Yes, I did notice some additional spurs in that tuning range that were at lower levels. Thank you for looking at that!
~Otto
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Re: Tiny ULTRA. Scan made with in bundle antenna. is it a normal spectrum?
Copy that and thank you so much.
?
My test are to be sure the system is working correctly since I'm thinking about using it with a TEM Cell for EMC precompliance.
?
Unfortunately I'm getting a strange resonance no matter what at around 700Mhz and testing more than one product.
I would like to be sure that the problem is not related to acquisition system.
?
Thank you so much
?
NH
?
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David J Taylor
Robin Midgett