This explanation is for Debian Kali Linux users with Gnome Desktop, Java installed & using Hamsphere 3.0 Java version who get Error Code: 2206 master gain not supported the selected audio device does not support the audio format hamsphere uses.

ERROR 2206

To the best of my limited knowledge of Hamsphere, which was 3 days at the time of this writing, this error occurs in Debian because the default "Mixer cmd" in the Hamsphere 3.0 settings that are preconfigured isn't installed in Debian Kali Linux. To fix the issue you simply need to install a compatible audio mixer such as alsactl and configure Hamsphere to use it. Simply put, it's a no-brainer fix compatibility issue.


The following manual links have been provided for users who require more in depth troubleshooting, although hopefully you will not require them.

Hamsphere 3.0 Documentation -
Kali Linux Documentation -
Debian Linux Documentation -
Gnome Desktop Documentation -
Ubuntu Documentation -
ALSA Documentation -


On Debian Kali Linux, and may be necessary for other Linux versions with aptitude installed such as Ubuntu, do the following in a terminal as root;

apt-get install alsa-base alsa-utils alsa-oss

Once you have pressed "ENTER" on the keyboard and everything installs as expected, you are finished in the terminal.


If using Gnome desktop, locate the "speaker icon" on the top toolbar, right click the "speaker icon" and select the option "Sound Preferences".

Alternatively go to "Applications", then go to "System Tools", then go to "Preferences", then click "System Settings". Once the "System Settings" menu window opens, locate and double click the "Sound" icon.

Once the "Sound Preferences" menu window opens, on the tab menu multiple options should be available, they will probably be;

1) Output
2) Input
3) Hardware
4) Sound Effects
5) Applications

Select the "Input" tab. Once in the "Input" tab you should see an "Input volume" label, scroll your eyes over to the right hand side where a button should be available with two options, either "ON" or "OFF".

Make sure the button is switched to "ON", to verify the mic is "ON" verify the button is blue in color and not grey.

Below the "Input volume" label you should see an "Input level" label, scroll your eyes over to the right where you should see an input volume gauge.

If the mic is "ON" when you speak you should see the input level gauge indicators turn blue. If the input level gauge indicators are all blue when you speak into the mic you may need to turn the input volume down.

If the mic is "ON" and the input volume is set to "Unamplified" or above and input level gauge indicators all remain grey then you need to consult your operating system manual and/or forums for further troubleshooting because you have an issue with your microphone.


Once you are happy your mic is operating as it should open up Hamsphere 3.0 by double clicking the "hamsphere_3.0.3.2.jar" file or right clicking the "hamsphere_3.0.3.2.jar" file and selecting "Open With OpenJDK Java 6 Runtime" or whatever Java version you have installed.

Once Hamsphere 3.0 opens, if you have registered for an account fill in the "Callsign" input box and the "Password" input box, then hit the "Login" button. If you are not registered then register for an account at and repeat this step.

If Hamsphere 3.0 kicks out an Error code: 2206 as posted by the post creator, press the "Settings" button.

Once the "Audio Settings" menu opens, you will be required to edit three settings, they are the "Mixer cmd", "Mic device" and the "Speaker device".

Locate the "Mixer cmd" label, in the input box to the right of the label highlight whatever is filled in and type in "alsactl".

To the right of the "Mixer cmd" input box you should see a "Mic device" label, to the right of the label you should see a "Mic device" input box, set the input box value to 0.

To the right of the "Mic device" input box you should see the "Speaker device" label and to its right the "Speaker device" input box, set the input box value to 1.

Once you have completed STEP 3 press the "Apply" button which should be below the "Mixer cmd" label.

Now restart Hamsphere 3.0.

Once Hamsphere 3.0 opens fill in the "Callsign" input box and the "Password" input box, then hit the "Login" button.

If everything worked as expected you should now be logged in to Hamsphere 3.0 and you should hear white noise.

If you still get the error message go back through STEP 3, try changing the "Mic device" to 1 and "Speaker device" to 0.

If this still doesn't work try changing the "Mic device" to 0 and "Speaker device" to 0 or "Mic device" to 1 and "Speaker device" to 1.

If you still get the error message, leave a message and someone will help you as soon as they become available, otherwise continue.


The Echo - Microphone Testing Hamsphere 3.0 manual can be found at which is recommended reading.

On the right hand side and at the top of the Hamsphere 3.0 radio simulator locate and select the "160m" button.

Now locate and select the "F ENT" button, you should now see the LCD display read out panel change from having a set frequency to;


On your computers keypad type in the number 0182345 and press enter, this is the frequency 1.823.45 MHz used for an "Echo Test".

An "Echo Test" simply records what you say and then plays it back.

On the right hand side and at the bottom of the Hamsphere 3.0 radio simulator locate the "PTT" button, where PTT stands for Push To Talk.

Once you feel comfortable press the "PTT" button with your left mouse button keeping it pressed in while you talk, the message will only record for 10 seconds.

Once your message has recorded you should hear your own voice with the message you recorded.

A test message may be something along the lines of "Mic check, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10" or anything else you wish to say.

If the mic playback is too low then you may need to move closer to the mic, if the mic playback is too high then you may need to move away from the mic.

If this doesn't work then you may need to adjust the "MIC LEVEL" knob to the right in order to increase the mic input volume.

If the mic is too high then you may need to move the "MIC LEVEL" knob to the left in order to reduce the mic input volume.

Play about with the "MIC LEVEL" knob until you are happy with the playback volume.


If all is well you should be up and running, if not, it is way beyond the scope of this post, seek help for your specific issue using operating system manuals, troubleshooting forums, or post a comment with your specific issue providing as much about your problem as possible in order than others can help you as quickly as possible.

Such information people will find useful includes but does not restrict to;

1) Your sound card make
2) Your sound card model
3) The full error message you receive
4) Any security software you have running
5) The mic you are using & its operating status
6) The speakers you are using & their operating status
7) The operating system you are using
8) Your operating system flavour & version
9) Your Java version installed
10) Your Hamsphere version & subscription status
11) How many versions of Hamsphere are you running simultaneously
12) What sound mixer are you using
13) If you are using other software that uses VOIP & requires mic access
14) Your port status of ports 5000 & 5001 on your firewall
15) UPNP Firewall status

Although you might see what is going on at your end, your words are other peoples eyes. Whatever your outcome, please leave a message to let me know how you got on. If you have any suggestions of how I can improve this article then feel free to let me know, the purpose of this article is to help other Kali users get on Hamsphere.

On closing I thought I would point you in the direction of one or two other bits of information I am finding useful in my learning journey on Hamsphere;

The HamSphere Code of conduct -
The Electronic Code of Federal Regulations -
The HamSphere Technical Manuals -
Radio Codes and Alphabets -
Ham radio cheat sheet -

Hope that helped someone, Godspeed 73 OC 26HS8638 QRT 30 over...
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