Re: PSK31 with J720

On Mon, 12 Nov 2007, Jonathan wrote:

> The biggest problem for me is not the physical constraints of implementing a female jack, or even bare leads coming from the JXXX.
> Details of the 'level attenuator' and 'DC blocking capacitor' are needed here at the shack of 7J1AWL.
> Could you be more detailed?

A "level attenuator" is just a resistor divider, do that you can lower the
audio output from your rig (probably something around 300mV), to whatever
the jornada ADC expects (probably something around 10mV). For a DC
blocking cap probably 1uF would be sufficient.

If you aren't sure about the electronics, don't attempt this - as you
mentioned, try glueing an small headphone to the mic instead.

vy 73

Jacek SQ5BPF