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Introducing uBITX's Invalid Calibration Symptoms and Recovery Mode

Introducing uBITX's Invalid Calibration Symptoms and Recovery Mode
uBITX CEC Firmware supports recovery mode from version 1.075
Of course, we have been using uBITX Manager to back up uBITX's settings so far.
I think this is the best way.


But I have to consider users who can not use uBITX Manager. It is available on Windows and Linux, but it has not yet been verified on the MAC.

I also had to consider users using Stock Firmware. Even if you want to keep using Stock Firmware, upload CEC Firmware only once. Then upload the Stock Firmware again and use it. However, I highly recommend using the backup function of uBITX Manager.
I create various backup files and upload them as needed.
Finally, I have also considered users who use CEC Firmware but have not yet used the backup feature.


1.Introduction to Factory Recovery
uBITX does not have Factory Recovery mode.

uBITX has 0 to 1023 EEProm storage space. but uBITX Stock Firmware uses only addresses from 0 to 31, 32 to 1023 are not used.

…
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uBITX Firmware CEC Version 1.075 (Beta) Release

uBITX Firmware CEC Version 1.075 (Beta) Release
Version 1.07x is a test version for new attempts. Version 1.061 is a stable version with most features implemented.  There are also various versions based on Version 1.04 or Version 1.06 by other developers.

1.CEC Firmware Versions Please click on the link below for Version 1.061. http://www.hamskey.com/2018/03/cat-support-ubitx-firmware-cec-version_24.html

Features added in uBITX Firmware CE Version 1.07 Beta are listed below.
http://www.hamskey.com/2018/04/cat-support-ubitx-firmware-cec-version.html

Features added in uBITX Firmware CE Version 1.073 Beta are listed below.
http://www.hamskey.com/2018/04/ubitx-firmware-cec-version-1073-beta.html

Since version 1.073, there are five .HEX files distributed.
Upload the version for your LCD mounted on your uBITX.
UBITX_CEC_Vxxxxx_16P.hex  : It is the LCD equipped with uBITX. Default LCD, 16x02 Parallel LCD
UBITX_CEC_Vxxxxx_16I.hex  : 16x02 I2C LCD
UBITX_CEC_Vxxxxx_20P.hex  : 20x04 Parallel LCD
UBITX_CEC_…
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Creating a simple S-Meter Sensor for uBITX

Creating a simple S-Meter Sensor for uBITX
There are various ways to attach S.Meter to uBITX. You can find things on the Internet that are far superior to what I have created.

1.Parts list
1N4148 * 1 LM386  * 1 Capacitor (1nF ~ 40nF) * 1
  (Marked : 1nF : 102, 1.5nF : 152, 40nF:403)
  I Used : 1.5nF (152)

Resistor (4.7k ~ 20k ) * 1
  I Used : 4.7K

Capacitor 10uF * 1 : Option
  (I did not use it to use minimum parts, but if you have an extra 10uF, please use it.)

Capacitor and Resistor have different display type of S.Meter depending on values.
The larger the capacity of the capacitor, the slower the S.Meter moves from High to Low. I used 1.5nF (152) because I need to move quickly for testing.


2.SChematic
It is the simplest model of the LM386.



The reason for choosing the LM386 is because it is cheap and the operation is reliable.
You will be able to buy at an internet shopping mall for less than $ 0.2.

Maybe you can find some of them around you. I was able to find some around after order…
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Setting S.Meter to uBITX with CEC Firmware Version 1.074 Beta

Setting S.Meter to uBITX with CEC Firmware Version 1.074 Beta Version 1.074 will be distributed with uBITX Manager 1.05 within 2 days
This document consists of uBITX's S.Meter setting method, examples displayed on the screen, video and so on. At the bottom of this article is example from Ham radio deluxe.
CEC firmware is based on pure uBITX without hardware modifications. Other types of LCD, S.Meter, etc., can be attached as an option when you want.
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How to Calibration uBITX

How to Calibration uBITX
This document will be incrementally added or changed as needed.
I have received many questions about Calibration. Let me write about the experience that people and people around me have done so far. The calibration method of CEC Firmeare is the same as the original firmware. Most of the following are my experiences. I thought uBITX failed after calibration failed. After analyzing the source, I noticed that the calibration was quite difficult to succeed.

Below are my uBITX settings.
Since I did not perform any calibration after receiving uBITX, I think it is the factory default for my uBITX.



A.Must Read Before Calibration
The calibration method of CEC Firmeare is the same as the original firmware.
Therefore, the following precautions apply to both the original firmware user and the CEC firmware user.

1. do not calibration
If your uBITX does not have a big problem with transmitting or receiving, do not calibrate. Perhaps your Calibration results will be terrible.
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Raspberry Pi GqrxSDR with uBITX (Examples of using RTL-SDR in uBITX #4)

Raspberry Pi GqrxSDR with uBITX (Examples of using RTL-SDR in uBITX #4)

CAT Support uBITX Firmware CEC Version supports SDR connections from Version 1.07.
http://www.hamskey.com/2018/04/how-to-connect-sdr-rtl-sdr-to-ubitx-and.html




1.Install RTL-SDR Driver
sudo apt-get update


sudo apt-get install rtl-sdr



sudo reboot

test rtl-sdr driver

rtl_test -t



2.Install Gqrx SDR
Download Gqrx SDR
http://gqrx.dk/download/gqrx-sdr-for-the-raspberry-pi

wget https://github.com/csete/gqrx/releases/download/v2.11.4/gqrx-sdr-2.11.4-linux-rpi3.tar.xz


ls -al gqrx*

tar xf gqrx-sdr-2.11.4-linux-rpi3.tar.xz
cd gqrx*rpi3



cat readme.txt
sudo apt install gnuradio libvolk1-bin libusb-1.0-0 gr-iqbal



sudo apt install qt5-default libqt5svg5 libportaudio2
sudo cp udev/*.rules /etc/udev/rules.d/

3.Configuration Gqrx the setting method is different according to the user's want.
In uBITX, various frequency control methods can be selected for SDR support.
Even if SDR Software does not support IF-Out or CAT communication, …
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