RadioBanter - View Single Post

March 29th 06, 06:21 PM posted to rec.radio.amateur.homebrew

On 28 Mar 2006 20:10:08 -0800, wrote:

Thanks for the Schematic link.

The D104 is connected to the Oscope and terminated into a 100K
resistor. It is not connected to the radio so RF is out.

The Oscope shows clipping on the negative peaks, the postive peaks are
OK.

I tried removing the battery and powering off a power supply where I
could vary the voltage to see if the distortion disappeared with
voltage, it did not. The affect was a lower audio output.

the best thing to do is to replace the two NPN and see what happens.

de KJ4UO

First bypass the amp and see what it does. It may be a bad element.
They will sometimes give funny distortion when they go bad.

73
Gary K4FMX