I think my first clue that this is a scam and is not legit would be that either someone made the tinySA Ultra extremely large, or someone has hands smaller than a cat's paw.

On Mon, Mar 25, 2024 at 01:14 PM, Richard B. Emerson wrote:

Oh, well, I tried. ;D?

Seriously, Erik and Hugen's answers are almost certainly the answer to your question - not a clone, just dinged, but repairable. Best of luck with the surgery!?

73
Rick
KC3DOO

Methinks you’re trying just a bit too hard Rick ?. I can’t keep up with the traffic on here recently?.
As Erik is the designer and Hugen is the maker (AFAIK) it’s pretty certain they will always give the right answers!

There are companies in the US who do this as a commercial venture.? They also have the wherewithal to perform the required near-field to far-field transformation of the data - without which renders meaningless numbers, even in pattern strength and directivity.

They have to pay for very expensive waivers and jump through hoops to allow for flight in non direct line of sight (LOS) situations.

You do know that it is illegal for a non part 107 sUAS pilot to fly in a non direct LOS manner, correct?? To be clear, we're not talking about radio LOS - If you can't see the sUAS with the unaided eye, you are in violation.? Only a part 107 pilot with a waiver can operate non-LOS.

The FAA actively monitors the interwebs for such violations, and actively pursues those who violate the laws pertaining to "drones" (sUAS) nowadays.? There's been too many stupid people operating the aircraft in stupid ways as of late - and they've ruined it for everyone who never did, including your basic RC airplane/helicopter enthusiasts.

It is failing because you have two of COM4. This should not happen but the solution would be to map the second COm4 to a different port number.

73

-Jim
NU0C

On Mon, 25 Mar 2024 06:14:30 -0700
"Lou W7HV via groups.io" <louandzip@...> wrote:

With BT active and the tinySA plugged in, Device Manager says:

Standard Serial over Bluetooth link (COM3)
Standard Serial over Bluetooth link (COM4)
USB Serial Device (COM4)

--

73

-Jim
NU0C

On Mon, Mar 25, 2024 at 01:22 PM, Martin wrote:

The intention at the time was to build a cheap drive around VDSL interference measurement system

With this in mind, it would be really useful if the TinySA app could take in real time GPS NMEA data, and create updated log files with time, date and position stamped signal level or plot file information.

Regards,

Martin

On Sun, Mar 24, 2024 at 07:25 AM, G4AON wrote:

A portable wideband HF active antenna could be calibrated to give the necessary antenna factor (needed to convert dBm to field strength). I haven’t got around to making/calibrating such an active antenna, but it’s not particularly difficult.

I have used a high impedance "E-Probe" type amplifier with a 1m long whip, fitted to a car roof with a magnetic mount. The intention at the time was to build a cheap drive around VDSL interference measurement system. But with fibre to the home now being rolled out, it doesn't seem to be such a big issue any more. However, EEV vehicle chargers may be the next problem.



I calibrated it using the Equivalent capacity substitution method.

You can either calculate or measure the whip capacitance.



And then use the Equivalent capacity substitution method to obtain the antenna factor.





Regards,

Martin

Thanks Rick. I guess the next question is obvious.
Does anyone have suggestions on where to buy the input switch XINLUDA XA17-G4K in the US? I checked my usual sources (DigiKey & Mouser) with no luck.
Cheers, Mike

?

Oh, well, I tried. ;D?

Seriously, Erik and Hugen's answers are almost certainly the answer to your question - not a clone, just dinged, but repairable. Best of luck with the surgery!?

73
Rick
KC3DOO

Welp, I found a workaround.? Disabling Bluetooth on my computer gets the tinySA app connected and working. I don't necessarily need BT active when working with the tinySA, but I'd like to have it work as I do sometimes use BT devices (mouse, keyboard, etc...).? What happens is...

On Mon, Mar 25, 2024 at 02:17 AM, Erik Kaashoek wrote:

https://tinysa.org/wiki/

Thanks guys. Sorry to bother you with this. Guess I'll have to be more careful once I get it back in business.
Take care, Mike

开云体育

Yes, but very much cheaper than one visit to a Compliance Test Lab...:-)
Cheers...Bob VK2ZRE

Unfortunately it looks like your RF switch and LNA are damaged, if it is ESD damage it usually only damages the RF switch. Maybe you accidentally fed an RF signal that exceeded the power limit, you can refer to the wiki to replace the RF switch and LNA!

Most probably the input switch?
Soo the FAQ in the wiki for replacement type number
--

Close Rick. I've been using it regularly since January 2023 but have no idea when I last ran a SelfTest or LevelCal until after I updated the F/W yesterday.

Ooohhh, Jan '23? Sounds as though you're pretty much stuck with this puppy.?

You bought the TinySA, it waited for you to put it to work, you decided to install the latest and greatest f/w before getting to work, and the wheels fell off. Does that sound close to? what happened??

If you haven't cracked the case, didn't bounce the thing off a wall, and was reasonably careful with the SNA connectors and USB connector, all should be well. Based on comments seen here, it seems the TinySA's front-end doesn't cope well with ESD surprises. Hugen's comment points at the front-end taking a hit. Hopefully Erik catches up with this thread and gives some input. Overall, though, I think this is part of the movie where the doctor walks away, shaking her head as she leaves the patient's hospital room.?

73
Rick
KC3DOO

Regarding Hugen's question:

The only source I have that could overload the TinySA is my HP8643A which is capable of 19.9 dBm, so it is possible that I accidentally overloaded it with a 20dBm signal. Obviously not on purpose, but I can't rule it out.

Test screen shots attached.

Hi all and thanks for the suggestions.
I did a Clear Config and restest - no change.
I did buy it from R&L January 2023, so doubtful a clone.
I did NOT do a SelfTest right before updating firmware, so can't say that the update was a factor. Seems doubtful.
I may have damaged it at some point in the past year. Not sure how I can tell.
I've attached a pic of the Version page as suggested.

Can you provide pictures of other test failed items??SelfTest?3, 4, 14？?It is possible that the RF switch and LNA on the port have been damaged, have you input a signal that exceeds the limits?

Good advice - wish I'd thought of it. ;)

BTW, Mike, did you do a self-test and calibration?before updating the firmware? If you did, and the device passed, then the f/w update becomes suspect. If not... not so good.?

73
Rick
KC3DOO

Make sure battery is fully charged.
Do Clear Config.
Do Level Cal.
Try self test again and report back.

73

-Jim
NU0C

On Sun, 24 Mar 2024 16:47:08 -0700
"Mike Miller" <audiobymiller@...> wrote:

Hoping I'm doing something wrong, but my TinySA Ultra is not passing SelfTest or LevelCal.

I just updated the firmware yesterday without problem to v1.4-156-g4eb315d, and then ran a SelfTest and LevelCal. Neither would pass.
Most of the errors are Signal Level Critical (test 3,4,7,10,11) or Signal Level Fail (test 14).
The Level Cal reports "Signal Level Incorrect, Check cable". I tried three different cables and all had the same result.
I don't believe I have a clone as I have bought all my products (TinySA, TinySA Ultra and nanoVNA) from R&L.

Anyone have any suggestions?

--

73

-Jim
NU0C