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<DIV><FONT size=2 face=Arial>is it rev related e.g. alternator revving up
and down or is it a constant freq ?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>could be cpu, could be fuel pump, could be fuel
injectors, could be oil sender. doing a quick Google pulled these WebPages ,
have a look.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial><A
href="http://www.amalgamate2000.com/radio-hobbies/radio/common_rail_diesel__interference.htm">http://www.amalgamate2000.com/radio-hobbies/radio/common_rail_diesel__interference.htm</A></FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>from chipboy on the overlander 4wd forum, <A
href="http://forums.overlander.com.au/viewtopic.php?t=41098&start=0&postdays=0&postorder=asc&highlight=&sid=e8ebef4009204a73da498a5f2a4f4802">http://forums.overlander.com.au/viewtopic.php?t=41098&start=0&postdays=0&postorder=asc&highlight=&sid=e8ebef4009204a73da498a5f2a4f4802</A> </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2
face=Arial>___________________________________________________________________________________________________________________________________________________________________________</FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN class=postbody><FONT size=3
face="Times New Roman">Rerun the oil sender wire using some thin coax and use
the centre wire for the sender, earth the outer at both ends and hey presto no
noise. <BR>Might try some suppressors on it too. Just an idea!
</FONT></SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN class=postbody><FONT size=3
face="Times New Roman"><BR>Matt <BR><BR></DIV></FONT></SPAN>
<DIV>
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<TD><SPAN class=genmed><B>geexel wrote:</B></SPAN></TD></TR>
<TR>
<TD class=quote>This is a fact. <BR><BR>It is caused by the oil pressure
sender to the guage in the instrument cluster on the dash. <BR>The remedy
is to run the wire through a switch on the dash and when you are on the
trot and want to use the HF, break the circuit through the switch on the
dash, ensuring that you turn it back on especially during those times when
the engine is working hard in rough
country.</TD></TR></TBODY></TABLE></DIV><SPAN class=postbody>
<DIV>____________________________________________________________________________________________________________________________________________________________________________</SPAN></FONT><FONT
size=2 face=Arial></FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
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<DIV><FONT size=2 face=Arial><FONT size=3
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<DIV><FONT size=2 face=Arial><FONT size=3
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<DIV><FONT size=2 face=Arial><FONT size=3 face="Times New Roman">Yours
sincerely<BR><BR><BR><BR>Michael Wain - VK3HAU<BR><BR><BR>EGARC Inc. Publicity
Officer.<BR><BR>Ph : 613 - 51411650<BR>Email - </FONT><A
href="mailto:vk3hau@vk3egc.org"></A><FONT size=3
face="Times New Roman">vk3hau@vk3egc.org<BR>Web - </FONT><A
href="http://www.vk3egc.org/"><FONT size=3
face="Times New Roman">http://www.vk3egc.org</FONT></A><FONT size=3
face="Times New Roman"> </FONT><BR><BR><IMG
src="cid:80AAD8CFDEF64E609169C96CE3C537CE@ASUS" a <><BR></DIV></FONT>
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style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=geoff@gatwards.org href="mailto:geoff@gatwards.org">Geoff</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=ozaprs@aprs.net.au
href="mailto:ozaprs@aprs.net.au">'Australian APRS Users'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, July 11, 2010 12:19
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [OZAPRS] Bad HF noises in
Landcruiser ??</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal>Guys,<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>A little OT, but perhaps you know the answer <SPAN
style="FONT-FAMILY: Wingdings">J</SPAN><o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Got my HF setup in the vehicle installed and operational
during the week – IC706 (Original Mk1) in a 100 Series Diesel Landcruiser (No
Turbo).<o:p></o:p></P>
<P class=MsoNormal>All working great, tunes up on all bands 80m through to 10m
with zero noise…… EXCEPT…..<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>When the engine is running I get an awful 1-2kHz squeal in
a few spots on 40m (thankfully most of the 7xx0 and 7xx5 freqs are free from
this problem and quite usable). The problem is also there on 30m and
20m, the noise takes out 10.147 and 14.116 – two freqs I’d like to be able to
access – but by far the worst is on 40m.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>I can probably live with it on 30 and 20m (call into the
travelers net whilst pulled over for a break, and APRS can get away with
degraded Rx), but it’s really annoying when tuning around on 40m whilst
mobile.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Anyone with a Diesel Landcruiser 100 had/solved this issue
??<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Cheers,<o:p></o:p></P>
<P class=MsoNormal>Geoff VK2XJG<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>OZAPRS mailing
list<BR>OZAPRS@aprs.net.au<BR>http://lists.aprs.net.au/mailman/listinfo/ozaprs<BR></BLOCKQUOTE>
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