开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
  1. Tinysa
  2. Messages
Expanded Topics Messages Polls
Date
Re: What to do when a selftest fails

 

Measure the call output with LNA on and LNA off
It should be around -35dBm
If the level is about correct with LNA on then you probably blown the attenuator
If the level with LNA on is as bad as with LNA off you may have blown either the input switch or a lot more
--
Designer of the tinySA
For more info go to

Re: tinysa ultra c58 value

 

1uF
--
Designer of the tinySA
For more info go to

tinysa ultra c58 value

 

Hi, please i need help , wich is the value of C58 capacitor? , is in short circuit , i replaced lna chip, the input switch and attenuator too, all test run ok , but measured this capacitor reveal is bad , no dc blocking now
Re: TinySA touch screen unresponsive [SOLVED]

 

Hello everyone.?
I had a similar problem. Unscrewed four screws and open the case. The large cable fits well. The small one from the touchscreen goes under the display, I lifted the display slightly there and the touch started working. I did not understand further . I left it until the next breakdown :)
Re: What to do when a selftest fails

[email protected]
 

Can you clarify what you mean? Does the LNA stay on when I do the self test?
Re: Duplicated mobile bands 1.8, 2.1, 2.7 and WiFi 2.4 #bug_report #tinysa #ultra

 

Thank you, I really didn't read this page carefully
Re: 5.8GHz wideband video signal measurements

 

Hi,
Related to subject: antenna/RF signal type details in video:
DJI mini 2? ?5,8GHz
?
https://youtu.be/ssTLa3vqSQ8?si=Ed1CYqdtQQkg1zaW
?
Regards,
Toni
Re: Duplicated mobile bands 1.8, 2.1, 2.7 and WiFi 2.4 #bug_report #tinysa #ultra

 

Filters are your friends.
Re: Continuously logging to CSV file using python

 

On Sun, Sep 22, 2024 at 07:37 PM, <hai.truong.csnott@...> wrote:
... While the screen of my tinySA device shows values from -80 dbm to -65 dbm, but your code output values from -30 to -20 for the above spectrum. May I know the reasons for this difference?
?
And what are the differences between your code and the one shown in since you do some conversion from the raw_data to dBm power.
?
The script you used is for the tinySA.? The tinySA and tinySA Ultra use different scaling factors to convert from raw_data to dBm power:
?
# tinySA: ?SCALE = 128
# tinySA Ultra: SCALE = 174
SCALE = 174
dBm_power = raw_data / 32 - SCALE
?
?
Example scripts for using the tinySA Ultra are located at: ?
?
One of the group members wrote a simple script for logging the FM band that is attached.
?
Herb
?

FM_scanraw.py
FM_scanraw.py

Re: Duplicated mobile bands 1.8, 2.1, 2.7 and WiFi 2.4 #bug_report #tinysa #ultra

 

I guess you didn't read the wiki page on the ultra mode before applying the unlock code?
--
Designer of the tinySA
For more info go to

Duplicated mobile bands 1.8, 2.1, 2.7 and WiFi 2.4 #bug_report #tinysa #ultra

 

Hi, I'm new here and may have missed a similar discussion.
?
My TinySA duplicates frequencies starting from 1100 MHz and ending with 3500 MHz. Perhaps frequencies lower and higher are affected, I was unable to quickly find a suitable antenna. Copies are created with an offset of approximately 2 GHz. I put together a small animation of how this happens.
?
Mobile bands 1.8, 2.1, 2.7 and WiFi 2.4 receive their full copies with an offset of approximately 2 GHz. That is, these are not harmonics, the offset is approximately the same for different frequencies and the signals do not differ externally either.
?
Approximate numbers are as follows:
?

1.1 -> 3.059

1.2 -> 3.1501

2.0 -> 3.9585

2.5 -> 4.5542

2.7 -> 4.6526

3.0 -> 4.9511

3.3 -> 5.2541

3.4 -> 5.5909

3.5 -> 5.7357

3.7 -> 6.0440

4.0 -> 6.4930

4.5 -> 7.2414


To better measure the frequency offset, I used a generator and I had even more questions. The main frequency and its harmonics were displayed on the screen exactly where they were needed, for example 1 GHz: 2, 3, 4, 5, and so on. At the same time, mobile phone signals are duplicated as before with an offset of about 2 GHz.
?
Please advise what could be causing this behavior and in what direction should I move on.
So far I have tried to calibrate the device and update the firmware to the latest version. I have also studied the settings menu.

ezgif-4-935c6e35e8.gif

Re: 5.8GHz wideband video signal measurements

 

On Fri, Sep 20, 2024 at 02:12 PM, Hugen wrote:
It is possible that Aliexpress cannot ship to your country, we will distribute to dealers in different countries after more testing of the LNA.
In my case I never had a problem with the shipment to Italy of the dozens of items that I bought on Aliexpress.
?
Also consider that I bought the TinySA Ultra from Zeenko store on Aliexpress in May 2023 without any problem during the order process ...
?
The problem I described above appeared a few days after Hugen's post 17933, before that I could see the LNA page ...
?
?

?

?
Re: Continuously logging to CSV file using python

 

开云体育

Its not my code, I just found it.? I can't answer the questions.

On 9/22/24 10:37 PM, hai.truong.csnott via groups.io wrote:

Hi Rich, thanks for your suggestion. I tried your code to output values from 5GHz to 6GHz. While the screen of my tinySA device shows values from -80 dbm to -65 dbm, but your code output values from -30 to -20 for the above spectrum. May I know the reasons for this difference?
?
And what are the differences between your code and the one shown in since you do some conversion from the raw_data to dBm power.
Re: updating the firmware using a bin file and dfu-util in Win10

 

Hi Chin-Leong,
?
You may have already seen my post a few minutes ago that the latest version of the document is soon to be released by Kurt Poulsen and me once Kurt does a review of my updates and makes any additions of his own.? It will bring this document up to Firmware Version 1.4-177 of the TinySA Ultra.??
?
73, David Massey, WD4OWA
Re: updating the firmware using a bin file and dfu-util in Win10

 

Kurt Poulsen and I have been jointly updating the menu documentation for the TinySA Ultra but I'm unaware of who is doing a similar Menu Chart document for the TinySA.? BTW, there will be a new release of the TinySA Ultra Menu Chart document hopefully before October 1st.? Kurt is looking over my updates and adding anything that might be needed.
?
73, David Massey, WD4OWA
Re: Continuously logging to CSV file using python

 

Hi Rich, thanks for your suggestion. I tried your code to output values from 5GHz to 6GHz. While the screen of my tinySA device shows values from -80 dbm to -65 dbm, but your code output values from -30 to -20 for the above spectrum. May I know the reasons for this difference?
?
And what are the differences between your code and the one shown in since you do some conversion from the raw_data to dBm power.
Re: updating the firmware using a bin file and dfu-util in Win10

 

Hi David,
?
At a cursory glance, it looks up-to-date; i.e. PAUSE is the topmost tab in the primary menu. Thanks for updating the document.
?
73, Chin-Leong Lim, 9W2LC
?
?
Re: updating the firmware using a bin file and dfu-util in Win10

 

That TinySaUltra ?document ?is excellent!

?Is there an updated ?version for the TinySa at the latest available FW (version 1.4-175)? ?What I currently have is dated March 2021.
?
--
73, Bernie, VE3FWF
(most typos in this message were generated by highly sophisticated auto-correction AI software)
Re: Max input signal at 10GHz.

 

John, simple rule.
Subtract the EXT GAIN value from the max rated input power and keep the tinySA measured power below that value
This works for both attenuators and amplifiers.
With ext gain of -30 dB your max rated power at the input of the external attenuator goes 30 dB up
With 20 dB external gain the max level at the input of the external amp goes 20 dB down
--
Designer of the tinySA
For more info go to

Re: Max input signal at 10GHz.

 

Thank you Eric,
?
This answers the question. I just wanted to make sure since it is an easy trap to fall into especially using pre amplifiers.? A reading of 0dbm after an amplifier offset of 20db is dangerous to the TinySA.
?
Something to keep in mind buying the amplifiers at Zeenco and using them in front of the ZinySA.
?
John
1701 - 1720 of 19546