Snow and VHF

Discussion in 'VHF/UHF - 50Mhz and Beyond' started by KC3AZG, Feb 15, 2015.

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  1. KC3AZG

    KC3AZG Ham Member QRZ Page

    I have noticed this winter I seem to be able to make it a little further when we have good snow cover with my 2 meter rig. I have saw a number of different reasons and such online but have a hard time trusting it. Has anyone else had this happen or is it just in my head?
     
  2. KL7AJ

    KL7AJ XML Subscriber QRZ Page

    You are absolutely correct. Snow has a high dielectric constant and is great for refracting signals before they penetrate to lossy earth. What you observe is real.
     
  3. KC3AZG

    KC3AZG Ham Member QRZ Page

    Thank you.
     
  4. WB2WIK

    WB2WIK Platinum Subscriber Platinum Subscriber QRZ Page

    Related tip: Don't eat yellow snow.:eek:
     
  5. K8ERV

    K8ERV Ham Member QRZ Page

    PURE water has a dielectric constant of 80 as I recall, and is a very good insulator.

    But it dissolves stuff so easily it seldom stays very pure.

    TOM K8ERV Montrose Colo
     
  6. K8ERV

    K8ERV Ham Member QRZ Page

    I do, it has a lot more flavor than the white kind.

    TOM K8ERV Montrose Colo
     
  7. W9JEF

    W9JEF Platinum Subscriber Platinum Subscriber QRZ Page

    Can you write your name in snow?
     
  8. K8ERV

    K8ERV Ham Member QRZ Page

    Sure. G L E N.

    TOM K8ERV Montrose Colo
     
  9. KC3AZG

    KC3AZG Ham Member QRZ Page

    Thanks for the good information everyone.
     
  10. KK4YWN

    KK4YWN Ham Member QRZ Page

    i suspect it makes very little difference with a horizontal antenna. with a vertical, an insulative layer on the earth would help mitigate the absorption of the wave front as it strikes earth. since horizontal wave fronts are not easily absorb by earth the effect is probably less noticeable.

    since we have a layer of snow/ice on the ground here now, i should be able to test this. but my antenna has enough ice on it to render it useless. if the sun would just pop out for a while i'd be set... i painted my antenna flat black when i built it because i expected it to be problematic in in-climate weather.
     
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