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

Graham Shirville g.shirville at btinternet.com
Wed May 7 06:28:24 PDT 2008

Hi Jeff,

Same problem here...does anyone use shielded twisted pair CAT 5 cables? Does 
this help at all/a bit/not at all?


Graham G3VZV
----- Original Message ----- 
From: "jeff" <kb2m at comcast.net>
To: <amsat-bb at 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 at UNITED.NET>
> To: <amsat-bb at 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
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