[Elecraft] KX1 low audio fix?
[email protected]
[email protected]
Thu Dec 4 12:47:01 2003
I did some testing on my KX1 and the audio level could be improved with =
more gain between the RF input and the audio output. But, the LM386 is =
already set to a gain of 200. I haven't tried this yet and perhaps one =
of you can try it before I have time to do it. The gain can be further =
increased by connecting a series R and C from pin 1 to ground. A =
starting place is 15 ohms at pin 1 connected to a 100uF cap to ground. =
The negative terminal of the cap connects to ground. This should up the =
gain to 2000 (and maybe make is oscillate nicely).
Alternatively, the 10 uF cap from pin 1 to 8 can be removed before =
trying the mod.
Dave WX7G