BLIND-HAMS Archives

For blind ham radio operators

BLIND-HAMS@LISTSERV.ICORS.ORG
Options: Use Forum View

Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
Re: LOW LEVEL HUM!!!
From:
Lou Kline <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sun, 2 Sep 2007 22:07:46 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (84 lines) 
Hi.

I think I like the suggestion of using an isolation transformer.  If it is 
any kind of grounding hum, that should knock it out.

73, de Lou K2LKK



At 05:44 PM 9/2/2007 -0400, you wrote:
>Not very close at all.
>
>
>----- Original Message -----
>From: "Lou Kline" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Sunday, September 02, 2007 2:00 PM
>Subject: Re: LOW LEVEL HUM!!!
>
>
> > How close does your cabling pass to your monitor.  I'm thinking some type
> > of magnetic induction is occurring, probably either from a CRT or one of
> > the power supplies associated with your  computer system.  The small DC
> > power supplies such as the ones used on speakers, DSL modems, cable
> > modems,
> > printers, etc. are suspect.
> >
> > 73, de Lou K2LKK
> >
> >
> >
> > At 07:28 PM 8/30/2007 -0400, you wrote:
> >>Hi Everyone;
> >>
> >>I am attempting to play my computer through my system.
> >>
> >>I am getting a low level hum.
> >>
> >>That's when I play it using the digital jack on the sound card.
> >>
> >>When I play it through one of the speaker jacks the hum is still there
> >>but,
> >>it's not as noticeable because the audio level is higher.
> >>
> >>When I turn the computer off, the hum disappears.
> >>
> >>When I boot up the computer, the hum is there even before windows comes
> >>up.
> >>
> >>Any ideas?
> >>
> >>73 De Anthony W2AJV
> >>[log in to unmask]
> >>ECHOLINK NODE NUMBER: 74389
> >>
> >>
> >>
> >>--
> >>No virus found in this incoming message.
> >>Checked by AVG Free Edition.
> >>Version: 7.5.484 / Virus Database: 269.13.2/985 - Release Date: 9/2/2007
> >>4:32 PM
> >
> > Louis Kim Kline
> > A.R.S. K2LKK
> > Home e-mail:  [log in to unmask]
> > Work e-mail:  [log in to unmask]
> > Work Telephone:  (585) 697-5740
> >
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Free Edition.
>Version: 7.5.484 / Virus Database: 269.13.2/985 - Release Date: 9/2/2007 
>4:32 PM

Louis Kim Kline
A.R.S. K2LKK
Home e-mail:  [log in to unmask]
Work e-mail:  [log in to unmask]
Work Telephone:  (585) 697-5740

ATOM RSS1 RSS2