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15269Re: [wuhu_software_group] Re: Lacrosse cables and sensors

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  • lratcliff lratcliff
    Oct 5, 2009
      OK, I think I understand now.  I assume I can make one run to the rain and wind sensor, using a different pair for each, and split them out to go to the sensors, and the temp sensor on the other end.  Ok to leave the unused pairs open?
       
      Lee
      KC4ART


       
      On 10/5/09, Rob Reab <robreab@...> wrote:


      If you’re rewiring to reduce RF interference, I would suggest shielded twisted pair cable. Conventional cat5 is not shielded. Can’t help you on the ‘balance’ issues.

       

      From: wuhu_software_group@yahoogroups.com [mailto:wuhu_software_group@yahoogroups.com] On Behalf Of lratcliff lratcliff
      Sent: Monday, October 05, 2009 10:34 AM
      To: wuhu_software_group@yahoogroups.com
      Subject: Re: [wuhu_software_group] Re: Lacrosse cables and sensors

       

       

      Ok, I am not familure with the CAT5 cable, other than knowing what it


      is. How would I wire it up as ballanced. I understand what that
      means as far as RF feed lines, but not sure how to make it work in
      this application.

      Lee
      KC4ART

      On 10/5/09, Jerry Flanders <jeflanders@...> wrote:
      > I should have also mentioned that I actually intended to wire up my
      > Lacrosse 2315 with a run of cat-5 from the sensors to the console,
      > but decided to keep it totally wireless after realizing what a nice
      > conductor that cat-5 would provide for lightning, and the value of
      > the electronics in the shack also hooked up to the wx computer. I
      > will put up with changing those batteries, or maybe plug in a wall
      > wart outside to substitute for the batteries.
      >
      > Jerry W4UK
      >
      > At 10:29 AM 10/5/2009, you wrote:
      > >Look up the specs on common cat-5 cable. I would expect high RFI
      > >immunity if you used it balanced as intended. I actually use a 80
      > >foot length of it to carry the HDTV signals from my DISH satellite
      > >receiver to my bedroom TV, and a second run for the stereo audio.
      > >Works well. Common RCA plugs at each end, and no apparent problem
      > >with the balanced-to-unbalanced transitions at each end.
      > >
      > >Common shielded wire may not be as good as properly connected cat-5
      > >in this regard - common shielded wire usually offers less than 100% shielding.
      > >
      > >Jerry W4UK
      > >
      > >At 08:30 AM 10/5/2009, you wrote:
      > > >Has anyone tried changing out the cables on the sencors on the
      > > >Lacrosse gear with something a little more imune to RF? I was
      > > >thinking of something like a shielded twin conductor wire like is used
      > > >in commercial audio mic cable.
      > > >
      > > >Lee
      > > >KC4ART
      > >
      > >
      > >
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