UR5FFR

Русский военный корабль, иди нахуй!
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PostPosted: 17 Jul 2019, 20:21 
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Joined: 21 Apr 2012, 22:00
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Location: Odessa
Позывной: UR5FFR
Вот человек собрал и все перемерял у себя в хозяйстве (много фото) http://www.diygoodies.org.ua/?p=1907


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PostPosted: 26 Sep 2020, 21:36 
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Joined: 21 Apr 2012, 22:00
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Location: Odessa
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Печатка под SMD https://easyeda.com/IgrikXD/Antenna-analyzer-SMD


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PostPosted: 16 Mar 2021, 11:41 
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Позывной: SQ1GU
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Hello. I have built this swr mouse and it works very well on the pc. I added the e-ink display control to the code, but I do not know how to calibrate the SWR value. The first measurement with an open port, the second with a 100 ohm resistor, how to correctly calculate the SWR from these values. Can you give me a hint? Can you put a mathematical formula for this calculation, or a piece of code?


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PostPosted: 16 Mar 2021, 13:25 
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Joined: 21 Apr 2012, 22:00
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Hi
You can find algorithm description and code sample here viewtopic.php?p=1213#p1213


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PostPosted: 18 Mar 2021, 19:07 
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Joined: 16 Mar 2021, 10:13
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Thank You for Link.
After 2 days of thinking, I understand something, but I can't understand how to convert Vadc to gamma to use the formulas you provided.


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PostPosted: 18 Mar 2021, 20:05 
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Joined: 21 Apr 2012, 22:00
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Location: Odessa
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SWR measured without and with extra 50oHm and used in algorithm for calculate Z.
SWR = (1+Gamma) / (1-Gamma)
Gamma = 10 ^ (ReturnLoss / 20)
ReturnLoss in db = (ADC - ZeroLevel)*Slope

In circuit AD8307 out to ADC return loss value. ZeroLevel and Slope - calibration constant. ZeroLevel depended from frequency. I'm store it for each 1MHz freq change. ZeroLevel measured as ADC value without RF load.
Slope measured on single frequency 1MHz. Connect 100Ohm resistor to RF port and measure
Slope = 9.542 * (ZeroLevel[1MHz] - ADC)


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PostPosted: 24 Jun 2021, 11:55 
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Joined: 24 Jun 2021, 11:44
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Позывной: UT3UKC
Добрый день, к сожалению, после обновления телефона swr mouse больше не запускается, сообщает, что приложение разработано для устаревшей версии андроид. Не планируется ли обновление приложения?


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PostPosted: 24 Jun 2021, 13:19 
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На какую версию андроида обновились?


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PostPosted: 24 Jun 2021, 14:08 
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Joined: 24 Jun 2021, 11:44
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Позывной: UT3UKC
На 11 версию


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PostPosted: 02 Oct 2022, 17:29 
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Joined: 24 Sep 2021, 10:52
Posts: 2
Позывной: uw5ehc
Android 12.
така сама історія ( При першій спробі запуску, видає повідомлення, що додаток створено для старших версій і т.д., потім запускається далі, але не працює. Один раз вдалось зайти в меню калібрування, але далі не пішло, як без рук тепер, було дуже зручно (((


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