[ICOM] HF Nosie on 756PROIII

[Larry Gauthier (K8UT)]

Like W6OMF says, sounds like an ethernet router. I have tried several here, 
and found LinkSys (Cisco) to be the worst at generating RFI birdies; NetGear 
to be the best.

There are a couple ways to reduce (but won't eliminate) the RFI: re-routing 
the cable runs to be farthest from your rig; installing toroids on the power 
and ethernet cables, stick the router (AND its switching power supply) in a 
metal box. None of these methods are completely successful. More drastic 
approaches that yield better results: throw out the LinkSys router; go to 
wireless cards in your rig PC computer (and any other PCs nearby).

-larry
K8UT
----- Original Message ----- 
From: "CWO" <dabigchief at elp.rr.com>
To: <icom at mailman.qth.net>
Sent: Saturday, December 27, 2008 08:45
Subject: [ICOM] HF Nosie on 756PROIII


Hi, I have recently noticed some static type noise on all bands which is 
rather strong.  On the 30m band I noticed that the noise spikes are spaced 
61 KHz apart.  On other bands the noise spikes are more tightly spaced.  I 
have turned off all other electrical devices with no luck.  I placed the 
radio on battery power and still have the same results.  I tried a couple of 
antennas, one vertical and a yagi, same result.  Signal does not increase or 
decrease when I changed the direction of the antenna.  I made two short 
video recordings, mpg format, 3.5mb each, if anyone would like to see and 
listen to the noise, just contact me directly.

Any assistance is much appreciated.

73,
Roland
K5CW
"Become A Ham...Come Join Us On The Airwaves"
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