[WriteLog] Ground loop isolator

[Randy Thompson, K5ZD]

Those of you who connect your sound card to the radio for AFSK or SSB have
probably run into hum or ground loop problems.  I had solved this problem
using a little homebrew box consisting of some connectors and audio
isolation transformers.

For those of you who are electrically challenged, Radio Shack has a product
that does exactly what you need.  Called a Ground Loop Isolator (Cat. No.
270-054), it can be found in the car audio section of the store.  It has two
audio connections terminated with RCA plugs on each end.  Cost was about
$15.

With two connections, you can use it for isolation to two radios.  Or use
one for transmit audio and one for receive.

Randy, K5ZD



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