Re: Invitation: How high will your tinySA Ultra go?
That would be great, gives us a change to explore SHF more.
We have local beacons on 13, 9, 6, 3,? and 1,5 cm? ( 6mm 47 GHz is planned).
Also the local GSM mast has a 39 GHz link according to antenneregister.nl
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Re: FW loads via MicroSD?
#ultra
On Sun, Dec 11, 2022 at 08:25 AM, Gary Traveis wrote:
It would be platform independent, as long as you can write to the card, you can do updates.
I don't understand the problem of using dfu-util (or dfu-util.exe on Windows). Just type: "dfu-util -d 0483:df11 -a 0 -s 0x08000000:leave -D tinySA_vx.y.z-nnn.bin"It works out of the box on Linux (even on a Raspi), MacOS, FreeBSD (as well as other BSDs). The only thing a Windows user has to do is to execute Zadig just one time as a setup. So it is a real "platform independent" solution. Martin
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Re: Invitation: How high will your tinySA Ultra go?
That sounds interesting.....
Does it mean that it is more difficult to clone the Ultra? .... Excellent.
Steve L
Sent from my iPad, complete with speeling mistakes
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Re: TinySA Ultra and TinySA App
The TinySA app, with repeated scan off, makes a routine call to the TinySA for information (every 4 or 5 seconds) this includes the vbat data. I ran this for over one hour without any sign of failure. So I think the fault is not just vbat, but depends on other circumstances, maybe when the TinySA is very busy scanning and servicing comms there is an occasional glitch around the time of servicing the vbat routine ?
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Re: TinySA Ultra - Hardware version "unknown"
On Sun, Dec 11, 2022 at 12:48 AM, Klaus W?rner wrote:
The number in the brackets is 168.
Let me know the number when you ever see "unknown" again ? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Invitation: How high will your tinySA Ultra go?
I can move the command to unlock above 12GHz to the expert config menu Internals menu will remain locked as it has many ways to kill the tinySA performance. --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: TinySA Ultra - Hardware version "unknown"
The number in the brackets is 168.
--
Klaus, DL5KV
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Re: Invitation: How high will your tinySA Ultra go?
On Sat, Dec 10, 2022 at 11:03 AM, Erik Kaashoek wrote:
Inside the locked internals menu is an option to enable the Ultra to go up to above 20 GHz
Is unlocking this internals menu available on a stock Ultra?? I have one on order, and of course will want to unlock it, as will others I know.
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Re: TinySA Ultra and TinySA App
On Sat, Dec 10, 2022 at 08:22 PM, hwalker wrote:
I've run Python automation scripts connected to the tinySA Ultra for hours without interruption, so the timeout issue is related to tinySA-App.
Herb, unfortunately it's related to the firmware of the tinySA & Ultra. The vbat command of the tinySA sometimes times out and therefore tinySA-App hangs. Please let us know, what Python script you are usings and a link to try. 73's de OE1MWW Wolfgang
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Re: FW loads via MicroSD?
#ultra
On Sat, Dec 10, 2022 at 11:25 PM, Gary Traveis wrote:
wouldn't it be useful to be able to do FW updates/reloads from MicroSD?
Yes, but it's a lot of work so maybe in the future ? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: FW loads via MicroSD?
#ultra
Erik, wouldn't it be useful to be able to do FW updates/reloads from MicroSD? It would be platform independent, as long as you can write to the card, you can do updates.
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Re: Invitation: How high will your tinySA Ultra go?
Erik, thanks for the information! That's probably what I needed.
Mirek
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Re: Invitation: How high will your tinySA Ultra go?
On Sat, Dec 10, 2022 at 01:32 PM, MirekD wrote:
The correction table would then serve to respect the connected equipment, (cable, amplifier etc).
In case this correction is not static it may be better to use a separate trace with TRACE/CALC/TABLE-TRACE and use the table to specify the cable/amplifier gain/loss and subtract this trace from your measured trace You can use 8 frequency/level points to specify the correction, in between frequencies will be linearly interpolated? The internal correction tables are best used to specify the tinySA itself so you do not need to change them often. --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Invitation: How high will your tinySA Ultra go?
Thank you, Kurt, excellent work!
Mirek
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Re: New FW release: Add SAVE STATE and LOAD DEFAULTS to PRESET menu
On Sat, Dec 10, 2022 at 05:07 PM, Toni Ciscar wrote:
If the difficulty is the memory needed, these last state settings could be saved in the startup memory locations.
This will kill the tinySA very quickly, sorry, otherwise I would have do this. ? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Jorge The current tinySA Ultra has the option to be serial line controlled. CONFIG/MORE/CONNECTION/SERIAL The serial port connections are 0-3.3V and are located at the PCB edge clearly marked as GND, RX and TX Just open the case and solder the wires. For the serial commands look here:? Curious to hear how these units will go into space --
For more info on the tinySA go to https://tinysa.org/wiki/
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I require serial port control to stack three (3) TinySA Ultra while controlling them from a PIC32 featuring 3 serial ports
?
Obviously, there is no native option unless someone knows something I do not.
?
I will pay for three ¡®custom¡¯ TinySA Ultra units if anyone knows the how-to of discarding the USB, while offering a serial port at N81, 115Kb.? ?USB is NOT an option
?
I will ¡®sniff¡¯ the serial commands from a PC to the TinySA Ultra to understand how to set them up in real-time, before launch unless the serial inbound and outbound traffic is documented someplace. Is it?
?
Yes, I wrote 'launch'. Did I mention these three units stacked together might find their way to space?
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Re: Attenuators, distance and overload
#tinysa
The wiki says " For best measurements keep input power below -25dBm" for both the original tinySA and the Ultra. But you also don't want to go much lower because the noise floor of the tinySA will limit the dynamic range of your results, so you should aim to be near that number. The Ultra has an LNA, which is useful for testing weak signals like you might find in the front end of a receiver, but you don't want to use the LNA for most tests of a transmitter.
Maintaining high dynamic range in testing is important when you are testing a VHF or UHF transmitter. FCC (and other regulatory agencies outside the US) require 60 dB suppression of harmonics and spurs on those bands; you want the primary signal to be at least that far above the noise floor "grass" so you can see all non-compliant signals.
I get there by using a combination of one or two fixed attenuators (I use a 30dB 20W attenuator for QRP and QRP-adjacent rigs, and add a 20dB 150W attenuator to the chain for rigs with output power higher than 20W) and a step attenuator for testing transmitters. For lower power things like local oscillators the step attenuator alone is enough. The step attenuator can be set in 1 dB steps, allowing the signal level to the tinySA to be set right at the target level.
You can sometimes find attenuators for sale at good prices at hamfests; all of mine were bought that way. You often can't determine the power rating of a surplus step attenuator; I choose to treat them as handling a maximum of?+20 dBm, aka 100 milliwatts, which may be overly conservative but does serve to keep them from getting out of spec over time because of overheating the resistors. Small fixed attenuators like the ones commonly used by cable TV systems have the same issue. Higher power fixed attenuators are usually clearly marked with their maximum power. Some also specify which end is the input; pay attention!
Hello, all. I just received my Tinysa yesterday. I spent several hours playing with it. I¡¯m not an EE, just a ham radio operator. I plan to use the Tiny mostly for:?
* Checking my transmissions for harmonics and spurs. My power levels are always 100w or less on HF, or 1-25 watts on 2m and 70cm.
* ¡°Sniffing¡± electronic devices for RFI (e.g. wall warts, LED light bulbs)
* Adjusting, troubleshooting and aligning radios.
A couple of practical questions. I have RTFMed, but it's a lot to take in in a day.
* What are best practices to minimize internal spurs in the Tinysa? Keep the signal being measured below how many dBm?
* What is/are the most useful value(s) of attenuator to have around? Known good brands on Amazon, where itks hard to discern between OK stuff and junk?
* Best practices for measuring transmitter harmonics, etc.? For example, is going out in the backyard as far as possible ?from the radio and antenna sufficient? I noticed that when near the radio, even when transmitting into a dummy load, readings appeared contaminated by coupling between the radio itself and the Tiny (using the supplied sma antenna). Ridiculously high harmonics appeared that went away if I reduced power to a couple of watts, or moved the Tiny to another room.
Just trying to get a feel for what is real and what¡¯s not. Thanks in advance.?
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Re: TinySA Ultra and TinySA App
Erik,
? If no quick fix is forth coming for the receive timeout issue, how about updating the "tiny Spectrum Analyzer" application as a temporary solution for those user's that require a long-term PC connection?
? Looks like it would primarily require expanding the application frequency limits, making the LO selectable (tinySA or tinySA Ultra), and making the zero-offset selectable (-128/-174).
? I've run Python automation scripts connected to the tinySA Ultra for hours without interruption, so the timeout issue is related to tinySA-App.
Herb
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Re: TinySA Ultra and TinySA App
My Ultra disconnects after 4 or 5 minutes: ¡®RC link timeout .. disconnecting¡¯. (1000 pts/scan & Win 10).
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On Dec 10, 2022, at 7:20 AM, Erik Kaashoek <erik@...> wrote:
?Can you guys connect tinySA-App, open the VNA comms window (click on the USB symbol) and click on "un-paused" so the text becomes "paused" and try if continuous sweep will still hang? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Ho-Ro
Jim Allyn - N7JA
Jorge Sanguinetti
Shirley Dulcey KE1L