I used two Radio Shack audio isolation transformers in a small
project box that I inserted in the middle of a standard stereo
patch cable. Got rid of the hum that I saw on the RTTY screen.
I had seen a spike every 180 cycles. Now the display is clean.
73 Stan, N3HS
-----Original Message-----
From: writelog-bounces@contesting.com
[mailto:writelog-bounces@contesting.com] On Behalf Of Wayne
Alexander
Sent: Saturday, February 01, 2003 10:47 PM
To: writelog@contesting.com
Subject: [WriteLog] Hooking Isolation Transformer?
This maybe a stupid question but I have to ask.
Don't want to blow up anything here.
I see that the Black and White wire of the Transformer
goes to the RX audio out and the Yellow and Red wire
goes to the Sound card Line Input.
So the question is, I have a stereo plug which is 3 wires
so does the wires from the transformer go to the tip and ring
and nothing goes on the ground side? Do you use the ground
at all?
Sorry for the dumb question but want to solder one time not 3 or
4 times.
Thanks,
Wayne
N?EA
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