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Hi Darryl,
I've had computer/RFI problems in the shack for the past few years. =
Problems always appear when I use a pc case that has poor quality =
construction and no continuity fingers between the chassis and the =
cover. Make sure when you have your pc bolted together, there is metal =
to metal contact between the two halves. ANoher problem I had was with =
RF sneaking out of the PC through the AC cord. The pc powersupply is a =
switching type. I was able to pick up a neat AC line RFI filter from =
Moser in SanDiego. I had to open the pc's ps and remove the old male =
connector andinstall the new one...BINGO! 70% of the rfi was gone. I =
stopped plugging the monitor into the PC AC supply. BINGO! 10% of the =
noise gone. The balance of the hash came from the monitor, but I was =
able to knock my QRM from S9 to S2.
GL DE KR6NA
--joe
----- Original Message -----=20
From: Darryl Youngblood=20
To: rfi@contesting.com=20
Sent: Saturday, November 06, 1999 3:56 PM
Subject: [RFI] RFI?
Hello=20
I have a serious RF problem. I am trying to run a packet =
station. No big deal? Well I have a 50+ watt Kenwood 261 sitting on my =
desk, That is not very compatible with the 400 MHz home brew computer =
sitting on the floor a mear 5 feet away. The antenna is in the attic =
just above the shack. I do have a grounded ground plane. There is =
about an s-3 of noise on 144.390 is this normal? There appears to the =
same amount of noise all across the 2 meter band. =20
KE4HTS
><>><>><>><>><>><>><>><>><>><>><>><>><>><>><>><>
From Great Lakes, Illinois this is The Youngblood's:
Darryl (ke4hts), Kelly (kb0vfx),=20
Hannah (4), Rebekkah (1), and Baby (due mid-Dec)
Visit our WebPages at:
http://www.members.tripod.com/~ke4hts (Updated 9 AUG 99!!)
Kookin With Kelly:
http://www.members.tripod.com/~ke4hts/menu.html
Email us at:
Darryl: dyngbld@ameritech.net
Kelly: kyngbld@ameritech.net
God Bless!
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<DIV><FONT size=3D2>Hi Darryl,</FONT></DIV>
<DIV><FONT size=3D2>I've had computer/RFI problems in the shack for the =
past few=20
years. Problems always appear when I use a pc case that has poor quality =
construction and no continuity fingers between the chassis and the =
cover. Make=20
sure when you have your pc bolted together, there is metal to metal =
contact=20
between the two halves. ANoher problem I had was with RF sneaking out of =
the PC=20
through the AC cord. The pc powersupply is a switching type. I was able =
to pick=20
up a neat AC line RFI filter from Moser in SanDiego. I had to open the =
pc's ps=20
and remove the old male connector andinstall the new one...BINGO! 70% of =
the rfi=20
was gone. I stopped plugging the monitor into the PC AC supply. BINGO! =
10% of=20
the noise gone. The balance of the hash came from the monitor, but I was =
able to=20
knock my QRM from S9 to S2.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>GL DE KR6NA<BR>--joe</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A href=3D"mailto:dyngbld@ameritech.net"; =
title=3Ddyngbld@ameritech.net>Darryl=20
Youngblood</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
href=3D"mailto:rfi@contesting.com"=20
title=3Drfi@contesting.com>rfi@contesting.com</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, November 06, =
1999 3:56=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [RFI] RFI?</DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV> </DIV>
<DIV><FONT size=3D3>Hello </FONT></DIV>
<DIV> I have a serious RF problem. I am =
trying=20
to run a packet station. No big deal? Well I have a =
50+ watt=20
Kenwood 261 sitting on my desk, That is not very compatible with =
the 400=20
MHz home brew computer sitting on the floor a mear 5 feet away. =
The=20
antenna is in the attic just above the shack. I do have a =
grounded=20
ground plane. There is about an s-3 of noise on 144.390 is this=20
normal? There appears to the same amount of noise all across the =
2 meter=20
band. </DIV>
<DIV> </DIV>
<DIV>KE4HTS</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT=20
=
size=3D3>><>><>><>><>><>>=
<>><>><>><>><>><>>&=
lt;>><>><>><>><><BR>From=20
Great Lakes, Illinois this is The Youngblood's:<BR>Darryl (ke4hts), =
Kelly=20
(kb0vfx), <BR>Hannah (4), Rebekkah (1), and Baby (due =
mid-Dec)</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D3>Visit our WebPages at:<BR><A=20
=
href=3D"http://www.members.tripod.com/~ke4hts";>http://www.members.tripod.=
com/~ke4hts</A> =20
(Updated 9 AUG 99!!)<BR>Kookin With Kelly:<BR><A=20
=
href=3D"http://www.members.tripod.com/~ke4hts/menu.html";>http://www.membe=
rs.tripod.com/~ke4hts/menu.html</A></FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D3>Email us at:<BR>Darryl: <A=20
=
href=3D"mailto:dyngbld@ameritech.net";>dyngbld@ameritech.net</A><BR>Kelly:=
<A=20
=
href=3D"mailto:kyngbld@ameritech.net";>kyngbld@ameritech.net</A></FONT></D=
IV>
<DIV> </DIV>
<DIV><FONT size=3D3>God Bless!</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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