[WriteLog] Sound board bad audio

2001年11月14日 06:32:45 -0000

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