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Re: New FW: Experimental feature added: value button dragging

 

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On 8/1/20 6:38 AM, Dave 'TXJ via groups.io wrote:
I wish people would get a sense of perspective, if they want the features of equipment costing thousands, they should go and spend thousands.


???? I have a Siglent spectrum analyzer I bought recently, and the tinySA has features that the Siglent doesn't have.? I can add some of those features, if I want to spend 500 dollars to purchase the firmware options.? Erik has done an amazing job of adding features to the tinySA!


Re: New FW: Experimental feature added: value button dragging

 

On Fri, Jul 31, 2020 at 07:41 AM, hwalker wrote:
editable transducer factor table
? ?3.?automatic OCBW (occupied bandwidth) measurement
Can you give a bit of background on these


Re: New FW: Experimental feature added: value button dragging

 

To all
Feel free to continue suggesting improvements. Sometimes I need feedback from multiple people to spend time on things that are useful but I'd rather avoid (such as updating the wiki, or changing colors of items on the status panel)
The feedback and requests from the beta testers have been tremendously useful.
W.r.t discussions started by suggestions, I would kindly request to "build" on suggestions e.g. improve on them.
Any suggestion is a personal view and has to be respected even if it seems ridiculous. If the latter, simply ignore.
I may react to requests or not. Don't read anything in me not reacting. I may be busy.
If you are (repeatedly) requesting something and no other people build on it, it may be something relevant for you, but not (yet) for the broader community. Which is not a problem, just something to be aware of


Re: New FW: Experimental feature added: value button dragging

 

On Sat, Aug 1, 2020 at 06:38 AM, Dave 'TXJ wrote:

Hi Erik,
My wishlist;
I wish people would get a sense of perspective, if they want the features of equipment costing thousands, they should go and spend thousands.

I wish that if what you've created isn't good enough for them, they'd stop grumbling and go and produce something themselves.

I wish that people would show the gratitude that the work of you and the team deserves.

-----------------------------------------------------------------------------

? ? A wishlist is not a demand, nor does it show a lack of appreciation.? I worked with Erik on the beta team and he knows I have the highest respect for both him and his work.? Erik is next to brilliant when it comes to squeezing features into the tinySA and has always welcomed suggestions that help the tinySA distinguish itself from the crowd.? If a requested feature isn't possible or lacks merit, he will not hesitate to let you know - and in most cases explain why.

? ?If there are no additional features you think can help to improve the tinySA then I'm happy for you.? If someone else makes a suggestion that they believe will improve the tinySA's marketability than you should leave it up to Erik to decide if the suggestion has any merit, and not assume the person making the suggestion? is "grumbling or showing lack of appreciation".

- Herb


Re: DTT spectrum in "high input"

 

I used the tinySA to debug dbv-c signal quality on my cable distribution. Easy to spot bad splitters or overload due to amplifiers


Re: DTT spectrum in "high input"

 

Thanks again EriK. I can't see how he can do it, but the important thing is that he does it. 30dB is not a panacea but it is pretty good. In a TV antenna installation the decoding will be satisfactory with 30dB C / N ratio and normally we will not find much more than that. Therefore, we could use the tinySA as a "poor man's field meter" for amateur use, with portability and value for money, unbeatable price.
Congratulations
-
EA1AWY Javier Muriedas (Gijón, Asturias, Espa?a)


Re: New FW: Experimental feature added: value button dragging

 

To Eric and Dave, and others,

As an amateur and hobbyist in radio and electronics for 60 years, I?have?spent thousands on professional kit in the past, played with it, learned a lot but it has mostly lain idle for the last decad or two for lack of benchspace and time.

If I was honest, I doubt that I could get better results below 300mhz from all the professional stuff that I could not do with the current Tinysa, with the exception of ssb imd measurements (for which I can use a ?15 rtlsdr or rsp1). I could not walk around with a boatanchor for tracing qrm/qrn either.

The arrival of the nanovna family and Tinysa will transform my hobby. As I have said in a previous post, a uhf- only (300-mhz to 3ghz) version of the Tinysa would allow me to also play with low band wifi, newer phone bands etc.

Steve L. G7PSZ.


Re: New FW: Experimental feature added: value button dragging

 

Hi Erik,
My wishlist;
I wish people would get a sense of perspective, if they want the features of equipment costing thousands, they should go and spend thousands.

I wish that if what you've created isn't good enough for them, they'd stop grumbling and go and produce something themselves.

I wish that people would show the gratitude that the work of you and the team deserves.

Erik, on behalf of a silent majority, thank you for all your dedication in producing something pretty amazing. Whatever the limitations of the Tinysa, it's far far superior to not having one.
Regards and many thanks Dave.


Re: DTT spectrum in "high input"

 

Nope, its fixed DSP inside the a chip


Re: DTT spectrum in "high input"

 

Is that high input mode mirror supression “ tweakable”, (eg with a balancing variable capacitor), or tiny twists of enamelled wire?

Steve, ?G7PSZ


Re: DTT spectrum in "high input"

 

In high input mode there is some amount of mirror suppression, at least 30dB.?
Not good but usable for certain measurements


Re: DTT spectrum in "high input"

 

Thank you very much Eric, for your quick and efficient response. It looks better than I thought. I believed that the channels would appear widened when received above and below the LO frequency with the available IF being less than 1MHz. It also supposed that there would be a "hump" in the central part when adding the powers of both recepcioners (above and below LO).
-
EA1AWY Javier Muriedas (Gijón, Asturias, Espa?a)


Re: New FW: Experimental feature added: value button dragging

 

The dragging will work for all form buttons that activate a keypad


Re: Coax cable shielding

 

With a short antenna the base station signal is -40dBm.
Guess the shielding is a bit worse when one end of the coax is not connected


Re: DTT spectrum in "high input"

 

Something like this?


Two adjacent DTT channels


Re: tinySA Un-Boxing

 

On Fri, Jul 31, 2020 at 06:44 AM, hwalker wrote:
My proof? reading seems to get worse as I get older.

Personally, coming from a cyber security situational awareness... I don't comprehend all the wireless infrastructure need and implemented other than to create electromagnetic spectrum situations.? Especially when the specific transmissions systems methods have been demonstrated very clearly to project sound as with acoustic hailing devices from the ultrasonic range to lasers... and also burn skin throughout the range of RF to microwaves like with the active denial system.? ?As with Cuba, China, Moscow and elsewhere since the 1950's and most likely prior... even with high level Diplomats, Staff and others... the dangers of sound, body and mind control weaponized systems will be actively denied.??

More reason to invest in wide frequency range portable spectrum analysis systems.? Not only for testing and detecting the typical signals, jamming, noise, static and interference potential.? Really awesome to see such price point and field capabilities.? Even if for some is only less space on the bench.?

Thanks for the review Herb and others.?

Eagerly looking forward to my order being received.? ?Neat to know can message and pay via Paypal too on Ali express.?

?


DTT spectrum in "high input"

 

?
Hi all. I come to this group from the nanoVNA group. I don't have a tinySA yet but I will surely buy one. I would like to see a sweep of the "high" input of the analyzer scanning the UHF DTT band to know how the 8MHz channels are displayed without the 433.9MHz bandpass filter. Thanks in advance
--
EA1AWY? Javier Muriedas? (Gijón, Asturias, Spain)


Re: Coax cable shielding

 

Attenuation of double shielded coax is around 90dB
so that would make that base station signal 0dBm?

On Fri, 31 Jul 2020 at 14:27, Erik Kaashoek <erik@...> wrote:
For those not used to a sensitive device as a spectrum analyzer I added a page to the wiki to illustrate the (im)perfection of coax shielding.

This shielding is particularly important with a close proximity strong transmitter at high frequencies


Re: New FW: Experimental feature added: value button dragging

 

On Fri, Jul 31, 2020 at 06:02 AM, Erik Kaashoek wrote:
FW release v1.0-44
You can touch and hold the frequency button in the middle and when dragging left/right the frequency will decrease/increase with a speed relative to the distance to the center of the button.

Can some of you provide feedback if this is usable?
Erik,
?v1.0-44 fixes the issue that was introduced regarding the multifunction switch.? The dragging left/right was kind of awkward for me, but picking a point left or right of center and holding down with the stylus accomplishes the same frequency decrease/increase action and feels more natural.

?I noticed the same action works for the LEVEL output button, at least in the LOW OUTPUT mode.? The action is only applicable for FREQ in the HIGH OUTPUT mode.

- Herb


Re: New FW: Experimental feature added: value button dragging

 

Yes those rotary encoders would be an improvement on the current jog, you'd have more/better control with altering settings.