The main birdies I am seeing are at 14.030 and
14.195/.198.
73s JOhn AA5JG
--- Kelly Johnson <n6kj.kelly@gmail.com> wrote:
> Can someone share with me the expected birdie
> frequencies for these
> routers? I use a Netgear wired router and a Netgear
> wireless router
> and I've never noticed any birdies from either of
> them. The only
> birdies I see on 20m are 60KHz apart and apparently
> coming from
> another house since I can DF them with my yagi and
> eliminate them by
> orienting my yagi in the appropriate direction.
> What typical
> residential devices would generate birdies at 60Khz
> intervals? It
> sounds like a typical switching power supply, but
> for what? A PC?
>
> On 1/9/08, Leigh L Klotz, Jr. <Leigh@wa5znu.org>
> wrote:
> > This has been my experience as well. I went one
> better and purchased 10
> > megabit fiber on eBay. The dober to 10baseT
> converters run off 5v
> > supplies and cost about $30 each. I got some PCI
> cards with fiber
> > instead of 10BaseT connectors for $10 each. The
> ST connector multi-mode
> > fiber is inexpensive and can often be scrounged
> from workplaces that
> > have moved to gigabit single-mode or to more
> modern connector styles.
> >
> > For the neighbors I still plan to give the gift of
> toroids, though.
> >
> > Leigh/WA5ZNU
> > On Wed, 9 Jan 2008 10:18 am, K4RO Kirk Pickering
> wrote:
> > > Hello John,
> > >
> > > I wonder what speed Ethernet you are running?
> > > I have tried 3 different brands and vinatges of
> > > wired hubs for my home 10-base-T network. Every
> > > device tried caused terrible RFI at 100MBPS. I
> finally
> > > reverted to using a 15-year old 10-base-T hub,
> which
> > > forces all the cards to run at 10 instead of
> 100MBPS.
> > > With this hub, I run three servers (Linux) and
> two desktops
> > > (one XP and one Mac) in the house with minimal
> RFI.
> > > I rarely notice the difference in speed except
> when
> > > moving really huge files across the network.
> > >
> > > 73
> > >
> > > -Kirk K4RO
> > >
> > >
> > > On Wed, Jan 09, 2008 at 09:16:34AM -0800, John
> Geiger wrote:
> > >> I have tried 3 different wireless
> routers(Linksys,
> > >> Netgear, and Ativa) and all 3 have put birdies
> on the
> > >> 20 meter band (maybe other places, but it is
> so bad on
> > >> 20m I gave up and didn't check other bands).
> I was
> > >> using them in a wired fashion, and all 3 put
> birdies
> > >> on the same frequencies, which makes me think
> that it
> > >> is something related to the workings of the
> router.
> > >> The ethernet wires I have run around the house
> are
> > >> radiating the birdies, as they disappear when
> I
> > >> disconnect the wires. However, I cannot
> afford to go
> > >> wireless right now with buying all of the
> wireless
> > >> equipment.
> > >>
> > >> Are wired routers using exactly the same
> circuitry
> > >> (meaning they cause the same birdies) or have
> people
> > >> found wired routers to be quieter RF wise. I
> will
> > >> probably break down and try one anyways, but
> thought I
> > >> would try to get some feedback first.
> > >>
> > >> I am back to using my ethernet hub which is
> quiet with
> > >> the ethernet wires running around the house,
> but the
> > >> ISP will only give me 2 IP addresses, so the
> computer
> > >> sitting next to the radio hasn't been
> connected to the
> > >> internet for a couple of weeks.
> > >>
> > >> 73s John AA5JG
> > > _______________________________________________
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> > > RFI@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/rfi
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> > RFI@contesting.com
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> >
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