When I built an interface using one of the $5 sound USB dongles,
I had to insert a pad to avoid overdriving the microphone input
of the dongle. I have 1K across the input to the dongle and 47K
in series with the input.
See Fred Cady's (NE7X RIP) KX3 book pages 119-120 for details.
Note that he uses different values of resistors. I think many
ratios and values will work.
73 Bill AE6JV
On 5/22/19 at 12:36 PM, r...@wc3t.us (rich hurd WC3T) wrote:
I didn't throw the other sound dongles away; maybe I'll try again. I'll
be sure to bring the SL with me just in case, however.
---------------------------------------------------------------------------
Bill Frantz |"We used to quip that "password" is the most common
408-356-8506 | password. Now it's 'password1.' Who said
users haven't
www.pwpconsult.com | learned anything about security?" -- Bruce Schneier
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