[amsat-bb] Re: "Birdies" from Linksys Wireless router

7 May 2008

      Graham:
With the Linksys device being plastic, I dont know how effective 
shielded cables would be.  Not to mention they are usually more 
expensive than the non-shielded ones.  Have you tried putting toroids on 
the network cables ?  That might knock down the birdies a little bit. 
Might not be a bad idea to put a toroids on the power cable to the 
Linksys as well.  Shouldnt need to but I am looking at possibilities.
Ron
KA4KYI
Graham Shirville wrote:
...
Hi Jeff,
Same problem here...does anyone use shielded twisted pair CAT 5 cables? Does 
this help at all/a bit/not at all?
thanks
Graham G3VZV
----- Original Message ----- 
From: "jeff" kb2m@comcast.net
To: amsat-bb@AMSAT.Org
Sent: Wednesday, May 07, 2008 12:49 PM
Subject: [amsat-bb] Re: "Birdies" from Linksys Wireless router
...
On the other hand  I had a problem with a wired Netgear hub. If I remember
correctly the birdie was S9, and around 145.800 or right on the ISS Mir 
d/l.
I had to unplug the wall wart from the hub to power it off, to work that
frequency. It was the hub, not the power supply, or Ethernet cat5 cable.
When I switched over to a hybrid (wired and 2.4 gig RF) Linksys router I 
was
able to eliminate the wired hub that was causing the problem. I work AO51
L/S no problem. I still run wire to my main computer and also downstairs 
in
my house as it is much faster than the Wireless G. How much faster?
According to Speakeasy speed test, wired 28212/2696 kbps, best rf (6 feet
away)10094/2646 kbps. BitTorrent notices a big difference!
I also tried several different hubs, from different manufactures, all
three of them had the same birdie, the problem went away when I went
wireless. Go figure...
73 Jeff kb2m
----- Original Message ----- 
From: "Alan P. Biddle" APBIDDLE@UNITED.NET
To: amsat-bb@amsat.org
Sent: Tuesday, May 06, 2008 7:31 PM
Subject: [amsat-bb] Re: "Birdies" from Linksys Wireless router
...
Mark,
If they ever get around to using it, there is also a nice birdie on
145.870!
My solution is to use ferrites on both the power and Ethernet cables from
the router, and also use the mast mounted preamp.  That is far enough 
away
that the downlink swamps the birdie.  Since most of the noise goes away
when
you unplug the Ethernet cable to the desktop, I have been considering
switching that to RF as well, as I have an unused PCI card handy.
Alan
WA4SCA

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[amsat-bb] Re: "Birdies" from Linksys Wireless router

Ronald Nutter