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" <[EMAIL PROTECTED]>
To: <elecraft@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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