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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, …

Introducing SDR Dongle with uBITX

Introduction to SDR dongle connected to uBITX
The question I hear frequently now is, "What SDR do uBITX connect to?" is.
This is my obvious mistake. I'm missing an introduction to My SDR.

The SDR I recommend is the cheapest.

There is also the question "My SDR can not be received below 25Mhz."
It does not matter. uBITX converts the SDR to a frequency that your SDR can hear.
You do not need to modify the SDR.

I have HackRF One and RTL-SDR ($ 7).
I can not find two differences when connecting to uBITX.

You do not need any modifications. Just connect SDR's antenna cable to uBITX.

Please note that all of the videos I have uploaded in recent days use the following products.


Perhaps searching for "RTL-SDR" on Ebay or Aliexpress is one of the cheapest.
I receive the FT-8 with the above product and pass it to Wsjt-x through Virtual Audio Cable.

https://www.ebay.com/sch/sis.html?_itemId=null&_nkw=USB+R820T+DVB+T+RTL+SDR+Realtek+RTL2832U+Digital+HDTV+Tuner+R…

Changed extension switch setting in CEC Firmware Version1.073

Changed extension key setting in CEC Firmware Version1.073

uBITX Firmware CEC Version supported extended key support from Version 1.072.
Version 1.072 was for internal testing and released version 1.073 beta for users
http://www.hamskey.com/2018/04/ubitx-firmware-cec-version-1073-beta.html

I posted an article that sets the extension key as shown below.
http://www.hamskey.com/2018/04/add-extended-switchs-to-ubitx-with.html


Before publishing Version 1.073, I received an offer from the beta testers to make the extended key a bit more flexible.

So I changed the function corresponding to the extended key to be able to select by user. The setting method is the same as the above link.
(http://www.hamskey.com/2018/04/add-extended-switchs-to-ubitx-with.html)

Change :
  1. Extended key has been increased from 4 to 6.
  2. User must set the feature for Extended Key.

Please see the video below.


Description of changes
In uBITX Manager V1.04, up to 6 expansion keys can be set as follows.


You need to …

uBITX Firmware CEC Version 1.073 (Beta) Release

uBITX Firmware CEC Version 1.073 (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.

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



Since version 1.073, there are five .HEX files distributed.
Upload the version for your LCD mounted on your uBITX.

It does not matter if you make a mistake. But the screen just does not come out.
If you make a mistake, just upload another hex file.

To upgrade to a .HEX file, see the link below.
http://www.hamskey.com/2018/01/how-to-upgrade-ubitx-firmware.html


The following video was taken to help understand the firmware installation.
I installed several LCDs in my uBITX…

Add extended switchs to uBITX with Firmware CEC Version 1.073

Add extended switchs to uBITX with Firmware CEC Version 1.073
This document will be published for use as a manual for the uBITX Firmware CEC Version 1.073 Beta release. Version 1.073 will be released within a day or two as testing ends. (You can download it from github and use it, but it can be modified.)


Since uBITX Firmware CEC Version 1.073 Beta, it supports 4 extended switchs.
For the time being, the firmware that supports the expansion switchs will be distributed separately for stability. Extension switchs Function If the firmware is stabilized, all firmware will have an expand switchs function. Whether to use the extension switchs can be set in uBITX Manager.


1.Preparations for adding function switchs
 You need 4 switchs and 4 different types of resistors.
 resistors does not matter anything around you.
 However, the difference between the four resistor values is better.

The recommended resistance value is more than 100k ohms.
This is because you can add more switchs later.
I foun…