[Elecraft] Low Power RTTY Output

[Lyle Johnson]

The LINE IN has a hardware attenuator so that soundcard outputs won't be 
set to very low levels. This is to help protect against noise pickup on 
LINE IN.

If the DXP-38 can't drive the K3 LINE INPUT, then you either need to 
boost the signal or use a mic input with proper precautions for ground 
loop isolation, etc. The DXP-38 may have an option via internal jumper 
to increase its output level.  My DXP-38 and its manual are outside my 
lab at the moment so I can't easily check this.

73,

Lyle KK7P