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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>There’s no variation with engine revs, (not like an
altenator whine) – there is a very low level (barely audible) ticking
that does seem to speed up slightly with the rpm. This one’s not a
common-rail engine… on reading about common-rail issues the problem
there is a high noise level across the board.. in my situation I have no noise
at all – beautiful conditions everywhere except on these annoying spot-frequencies
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The Oil sender issue looks interesting – I’ll take a
look where that cabling goes and see about shielding it… see what
that does (saw another post there about replacing the sender cable with a coax
and earthing the shield).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Geoff<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
ozaprs-bounces@aprs.net.au [mailto:ozaprs-bounces@aprs.net.au] <b>On Behalf Of </b>Michael
Wain<br>
<b>Sent:</b> Sunday, 11 July 2010 1:57 PM<br>
<b>To:</b> Australian APRS Users<br>
<b>Subject:</b> Re: [OZAPRS] Bad HF noises in Landcruiser ??<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>is
it rev related e.g. alternator revving up and down or is it a constant
freq ?</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>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.</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><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></span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>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> </span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>___________________________________________________________________________________________________________________________________________________________________________</span><o:p></o:p></p>
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<div>
<p class=MsoNormal><span class=postbody>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. </span><br>
<span class=postbody>Might try some suppressors on it too. Just an idea! </span><o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
<span class=postbody>Matt </span><span class=postbody><o:p></o:p></span></p>
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<p class=MsoNormal><span class=genmed><b>geexel wrote:</b></span><o:p></o:p></p>
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<p class=MsoNormal>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.<o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>____________________________________________________________________________________________________________________________________________________________________________</span><o:p></o:p></p>
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<p class=MsoNormal>Yours sincerely<br>
<br>
<br>
<br>
Michael Wain - VK3HAU<br>
<br>
<br>
EGARC Inc. Publicity Officer.<br>
<br>
Ph : 613 - 51411650<br>
Email - vk3hau@vk3egc.org<br>
Web - <span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="http://www.vk3egc.org/"><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>http://www.vk3egc.org</span></a></span>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
<br>
<img border=0 width=413 height=192 id="_x0000_i1025"
src="cid:image001.jpg@01CB2105.31CC3250"><><o:p></o:p></span></p>
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<blockquote style='border:none;border-left:solid black 1.5pt;padding:0cm 0cm 0cm 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message ----- <o:p></o:p></span></p>
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<div>
<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'> <a href="mailto:geoff@gatwards.org"
title="geoff@gatwards.org">Geoff</a> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:ozaprs@aprs.net.au" title="ozaprs@aprs.net.au">'Australian APRS
Users'</a> <o:p></o:p></span></p>
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<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Sunday, July 11,
2010 12:19 PM<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> [OZAPRS] Bad HF
noises in Landcruiser ??<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Guys,<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>A
little OT, but perhaps you know the answer <span style='font-family:Wingdings'>J</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>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 style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>All
working great, tunes up on all bands 80m through to 10m with zero
noise…… EXCEPT…..<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>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 style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>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 style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Anyone
with a Diesel Landcruiser 100 had/solved this issue ??<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Cheers,<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Geoff
VK2XJG<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
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<p class=MsoNormal>_______________________________________________<br>
OZAPRS mailing list<br>
OZAPRS@aprs.net.au<br>
http://lists.aprs.net.au/mailman/listinfo/ozaprs<o:p></o:p></p>
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