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On Sun, Jan 17, 2021 at 05:54 AM, <benoit.panizzon@...> wrote:

Got mine from Aliexpress (Seller: Tool-box Store) and so far it does not meet the 'clones' description.

As listed on the wiki page the seller tool-box store sells clones and you have indeed received a clone.
?
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New FW release
Version V1.1-75
Changes:
- The error in the NFM and FWM carrier frequency has been corrected

It's a clone. I had identical issues

Alain

Hi Erik

Thank you for the very quick reply.

I was just doing so after also stumbling over the 'clones' thread. Got mine from Aliexpress (Seller: Tool-box Store) and so far it does not meet the 'clones' description. Price also is in the same range as what I found on hackaday.



-Beno?t-

Please post a picture of the screen of the failing selftest? (7 and 8, not the final selftest screen) and a photo of the backside of the housing of the tinySA

--

Hi Gang

Two days ago I received my tinySA. First thing I did after looking at the FM and 2m Ham-Band with the provided telescopic antenna, was a firmware upgrade. Unfortunately I didn't bother to note down the leveloffset and correction values. I tought this step was sort of optional.

So I flashed and and did a clearconfig to start of fresh.

But now some of the selftest keep constantly failing. I have attempted setting various leveloffset values after reading some threads here, and have also been playing with the correction values to try to understand what they exactly do. But I don't get the tests 7 and 8 to pass. 8 even stays on 'failed'. Also used two loop cables.

Any help appreciated.
-Beno?t / HB9EUE-

Will look into this.
Guess something went wrong somewhere during an update
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I experienced the same thing, although I wasn't as sharp as Liam to track down the shift in
the carrier, but just noticed that the tinySA didn't produce a carrier on the assigned frequency
when either FM or FM Narrow was selected, and would produce a modulated carrier when
AM was selected.? I had the exact same conditions, having just upgraded the firmware to
1.1-74.

Rick Hendricks
ke0gb

Look at the attenuator level. Sometimes it stays at 30 with no signal present.?
--

My recently acquired (and on close inspection, genuine) TinySA with 1.1-74 firmware exhibits this behaviour. I discovered this by chance with my VX-7R, having found the carrier would disappear when I selected FM modulation, but not with AM. I happened to use the channel search function and found where the carrier is going.?

On low output with FM narrow or FM wide modulation, the carrier shifts up 160kHz while the displayed frequency remains as selected. With AM the carrier remains correctly on the selected frequency:


Low output, no modulation


Low output, 1kHz AM


Low output, 1kHz NFM


Low output, 1kHz WFM

On high output with FM narrow or FM wide modulation, the carrier shifts up 80kHz while the displayed frequency remains as selected:


High output, no modulation


High output, 1kHz NFM


High output, 1kHz WFM

The TinySA was delivered with a few days ago with firmware 1.1-12 (or thereabouts) and if my memory serves, it did not then exhibit this behaviour. Maybe someone can do a sanity check and see if this is indeed a bug.

Regards,

Liam

I can occasionally connect to my Win10 PC although never when RBW is selected other than AUTO.? When it does connect the default settings noise floor is sometimes -58 dB and sometimes -80 dB.? Weird.? So I tried to connect to my laptop Win7 device.? The program does not ally me to select a port number (as it does in the Win10 desktop) and only displays NONE.? So no connection possible.? I'm guessing I am missing something in a setup or whatever.? Am I destined to use the small screen and save with my cellphone camera?

--Ed

And when you need a SMA bullet, I recommend this style with a knurled center section: ebay # 202670005403

--

Two reasons I can think of:

The pintails will wear out or break long before the savers.

Most people will find themselves changing the pigtails often for one reason or another.

73

-Jim
NU0C

On Fri, 15 Jan 2021 17:02:06 -0800
"S Johnson" <cascadianroot@...> wrote:

Instead of these savers, why not use little SMA pigtails (6" or so)?

On Fri, Jan 15, 2021 at 11:40 AM, Dennis Roth N3AZB wrote:

It all depends on what your trying to do and what your trying to measure. As has been already mentioned, if you're just trying to measure relative levels and not absolute values you could just?use the tinySA antenna.

Only if you are measuring relative levels of signals in a narrow band. As soon you have signal spread over 3 harmonics, you mast have physical tap

On Thu, Jan 14, 2021 at 11:37 AM, wb6ogd wrote:

Don't you have enough RF in your shack that you could just us the tinySA antenna
to get enough signal to check it?

Garry, yes and now, depends what you are measuring.
If you just want to see signal around the carrier (for example you CW, or how wide is your SSB, or how deep is modulation on AM, or haw flat you FM), then you are right.

I need it to measure harmonic distortions - emissions on multiples of the base frequency, and getting signal from "the air around" brings all random attenuations on different frequencies (transmitting antenna, walls, tinySA antenna, ... Much (MUCH) more deterministic with "physical"? tap?

<bammi asked> Do you have an opinion about a tap as you suggest vs. sampling the signal.

That question was recently asked in another thread, not many responses, but among ones that did respond I'd say that:

• resistive
  • easier/cheaper for DIY
  • if you use quality resistors (low inductance) and if you have good way to test transfer function (nanoVNA for example) to do some fine tuning, can get wider and flatter frequency response
• inductive
  • half way to building SWR meter :)
  • IMHO looks cooler :)
  • the key benefit - galvanic isolation (high voltage DC on the coax/antenna/TX side won't "traverse" the current transformer

Instead of these savers, why not use little SMA pigtails (6" or so)?

I bought mine from W5SWL. USA seller, fast shipping, decent products. He sells direct or eBay.



73

-Jim
NU0C

On Fri, 15 Jan 2021 15:09:56 -0800
"Roger Need via groups.io" <sailtamarack@...> wrote:

The SMA connectors on the TinySA? were never meant for hundreds of connect/disconnects and will wear out eventually especially if the center pin is allowed to rotate and "drill out" the SMA jack. A good way to protect your device is to use "connector savers". Once they wear out you simply replace them with new ones. There are several places you can buy them online. I purchased mine on eBay from a Chinese seller for about 8 USD (including shipping).

I bought mine here ...
;var=464095337588&_trksid=p2057872.m2749.l2649

If you want better quality (Amphenol) and 2 day delivery order from Digi-Key ....


Roger