[WriteLog] Sound board bad audio

[Eric Pearson]

WA9ALS - John wrote:

> What's everyone else doing with their Heils?  Is everyone using a boost of
> some kind, or do most not have this problem?  I note it works FB with the
> PROII without the preamp - I guess maybe I need it for the soundcard?  tnx

Most sound card expect to see an electret mic which has a higher
output than a dynamic mic like the Heil.  Tomi Engdahl designed
a simple amplifier that gets its bias from the sound card:

http://www.epanorama.net/circuits/dynamic_to_electretinput.html

It works well with my HC-4.

73,
Eric - K6EP