Re: [IRCA] EMI problem solved!

[John Hunter <jshunter@xxxxxxxxxxx>]

Hi Charles,
A ground loop isolator is, from I can tell, a 1:1 transformer that passes 
audio but not DC. I was getting DC along with the computer noise into my 
radios every time I plugged an audio cable from my computer sound card 
"MIC" jack to the radios audio output jack. Before I installed it the LW 
band and pretty much all of MW was obscured with noise from the computer. 
The audio isolator (radio shack part #270-054) was $16.99 but I also bought 
an RCA to 1/8 mono "Y" cord adapter to plug into the ICOM R-75. If you own 
an NRD 545 like I do it will just plug right into the RCA audio outputs on 
the back of the radio! Digging through my junk box I found an audio A\B 
switch that I am going to plug in so I can switch between both radios 
without constantly plugging and unplugging cables. Hope this makes sense as 
I'm on some strong cold meds and I am probably rambling on :)
Best Regards,
John Hunter
Rossville GA


At 03:25 PM 12/5/2005, you wrote:
>What is this ground loop isolator?
>
>Charles
>
>
>
>
>At 09:20 PM 12/4/2005, you wrote:
>>Thanks to Curt , Craig, and a few others my emi problems are solved. The
>>Radio Shack Ground Loop Isolator worked perfectly.. No more
>>computer-monitor hash!
>>Thanks for the help,
>>Best regards,
>>John Hunter
>>Rossville GA
>>
>>
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>
>             -----------
>Charles A & Leonor L Taylor
>  Greenville, North Carolina
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