Setup guide

Click on the Audio tab first. Set the USB Voice CODEC as the Default device for BOTH playback and
Recording, and click Apply, then OK out. Now click the Sounds tab.
Normally, the Sound scheme will be identified as Windows Default, but if you leave it alone, the
Windows sounds (like the File not found "clunk", for example) may wind up in your recordings or even
go out over the air. To prevent that, you need to create a new scheme. Starting from the Windows
default scheme you select each sound in turn from the Program events list, and assign "None" to it.
Then save the resulting scheme under the No Sounds title. Apply it and OK out.
Now go back into the Router, and make sure that the Audio Switching tab has CmCmCm set for
Voice, and that the left channel is selected for radio 1.
That's all there is to it. Now when you record DVK messages on the fly (by pressing Ctrl+Shift+Fx),
your microphone audio will reach the Voice CODEC, and playback will work normally as well.
Probably the best place to monitor your voice level is on the Audio Mixer tab of Router, in the
left−hand bargraph. It has much more "resolution" than the simple indicator provided in the Info
window of N1MM Logger. Enjoy!
73, Pete N4ZR
1.10.2 Ok I have the realtek problem
Depending on the software you are using to record the mic audio, Wave In ID <> Wave Out ID can be
a real problem. You have set the default recording device to the microHAM CODEC and the default
playback device to something else. The Mixer is still somewhereelse and most amateur software can
not handle that condition.
1.10.3 Ok I have more than 3 mixers
The Windows XP mixer (SoundRec32.exe) only accepts mixers 0−3 on the command line (the way
Router calls the TX or RX mixer). When you have at least four soundcards (five Mixers) in your
system and microHAM CODEC is the fourth or fifth mixer, it can not becalled directly with the TX
Mixer or RX Mixer button.
13−2−2009 1 General information (setting up microHAM and N1MM logger) 9