[Elecraft] Birdies

[Trev - K6ESE]

Randy,

Did you try using shielded twisted pair CAT5E or CAT6 cable? This solved it 
for me. Just an idea...

73 Trev - K6ESE
----- Original Message ----- 
From: "Randy Johnson" <randyj at loan-wolf.com>
To: <elecraft at mailman.qth.net>
Sent: Friday, July 15, 2005 3:03 PM
Subject: [Elecraft] Birdies


>I have had trouble with annoying “birdies,” notably at 14014 and 14029.  I 
>hope my experience in chasing these down helps someone else with a similar 
>problem.
>
>
>
> I finally traced this to an interaction between the cable modem for my 
> high speed cable Internet access and the network card on my computer. 
> When I cut power to the modem, the birdie would stop.  When I unplugged 
> the CAT 5 cable at the computer, the birdie stopped.  When plugged in and 
> when I cut power to the computer, it was still there because when a 
> computer is “off,” not all circuits are off, and whatever the reason the 
> birdies were still there. I tried switching to DSL as provided by the 
> local phone company but the problem was still there.
>
>
>
> It may well be that there are more expensive network cards that would not 
> have this interaction but I did not want to fool around with them. I had 
> noted that I did not have birdies while using a laptop in the shack.  So I 
> tried a cheap wireless card, similar in function to the ones used with 
> laptops except that you plug it in to one of the slots on your PC.  The 
> birdies went away but the thing was incredibly slow, worse than a 56K 
> modem. So I bought a more expensive Linksys wireless card with a “speed 
> accelerator.”  No more birdies and the Internet speed is consistent with 
> high speed access. I should point out that the literature provided with 
> this card says that the accelerator works only with machines running 
> Windows XP.
>
>
>
> Randy W6SJ.
>
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