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

[Ronald Nutter]

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 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
>>> WA4SCA
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