[Elecraft] K3 Tx audio ramp up with DATA-A mode

[Bob Cunnings]

If you are using Windows, there *is* a way to adjust the emu0202 output
in software. It's not by using the EM-U control panel app but by using the
Windows Volume Control applet instead.

I'm using an emu0202 with Windows XP.

Either access the Windows Volume Control from the task bar

or

Navigate to Control Panel->Sounds and Audio Devices. Select
the Audio tab (not the Volume tab where the controls are grayed
out) and you should see the emu0202 as the "sound playback"
device. Click on the Volume... button to open the Speaker dialog,
where you can adjust the output level. With mine set to the 2nd tick mark
from the bottom, the mic level control is set to 16 or 17 to drive
the K3 to 4-5 bars input in DATA A mode.

If you are running Windows 7 things may be a bit different.

No, the emu0202 instructions don't mention how to do this.

Bob NW8L

>Just providing some information that may help others that have
>experienced RF slow ramp up to full power when driving Tx audio from
>a soundcard (typ DATA-A application).  I
>
>I had comments back at the time I asked for solutions to check for
>low audio level.  But it was the opposite, in fact!
>
>I am using an external emu0202 soundcard (I/F to computer vis USB2.0)
>which has plenty of level controls for a sound input but none for
>output via the stereo phone jacks.  Going into the operating sw for
>the soundcard reveals no adjustment of the output audio (usually
>called playback).  I found reference to making adjustments as part of
>installation of the sw - but none after installation - huh?
>
>Well not wanting to go thru all the process of un-installing then
>re-installinng I looked for an alternative.  There was one starring
>me in the face on the front panel.  There is a headphone jack with
>level control (volume) as part of the on-off control.  I unplugged my
>Tx audio line from the jack at the rear and into the headphone jack
>and adjusted the TX audio to 4-bar with 5th flickering.
>
>I could not accomplish this using the mic level control on the K3
>(which doubles as line-in level).  Setting the mic=0 results in no
>audio; setting the mic=1 and it was overloading the K3.  The
>soundcard output was just too hot.  Using the headphone jack with
>headphone level control lets me set it just right.
>
>Result.  First time I sent test tones form the sw the K3 went thru
>the gradual RF ramp up.  Next time I tried it K3 immediately went to
>full power with no ramp up...problem solved!
>
>
>73, Ed - KL7UW, WD2XSH/45