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- Newsgroups: rec.video.satellite
- Path: sparky!uunet!spool.mu.edu!uwm.edu!ux1.cso.uiuc.edu!news.cs.indiana.edu!lynx!triton.unm.edu!roberts
- From: roberts@triton.unm.edu (Robert Smathers)
- Subject: Snow on the dish -- does it make it track incorrectly?
- Message-ID: <ywnr62q@lynx.unm.edu>
- Date: Tue, 29 Dec 92 01:26:49 GMT
- Organization: University of New Mexico, Albuquerque
- References: <9212280612.aa22558@cbda7.apgea.army.mil> <1992Dec28.200005.664323@sue.cc.uregina.ca>
- Lines: 23
-
- In article <1992Dec28.200005.664323@sue.cc.uregina.ca> cazabon@hercules.cs.uregina.ca (Charles Cazabon (186-003-526)) writes:
- >
- >To add a little satellite-related topic here, does anyone know the effects
- >of snow on a mesh dish? I realize a light crusting won't impair my
- >reception, but what if a ten foot dish is packed full of the stuff? The
- >weight alone could damage the dish, but will it affect my reception?
-
-
- I don't think snow makes much difference in the tracking of a dish (I
- own a solid fiberglass 10 footer and snow doesn't affect the tracking
- of my dish). Considering mesh dishes are somewhat weaker than
- solid dishes, snow might affect tracking slightly.
-
- The problem I find is the snow piles up and drastically changes the
- focal point of the microwaves. What is the focal point on a no-snow-filled
- dish is perfect for the way I have my feedhorn set up. When snow comes,
- the focal point shifts and the feedhorn only works a fraction as well as it
- does when there is no snow in my dish. When the focal point is changed
- so much that it affects my reception, I brush the snow out of it.
-
- Robert
- roberts@triton.unm.edu
-
-