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28-04-08, 12:43 PM
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#1 (permalink) |
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Senior Member
Join Date: Oct 2007
Location: Herefordshire
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Polarity
Normally to add a new TP polarity is either 'H' or 'V'. The other day I saw 'R' and 'L', what does this mean?
regards
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TM1500c+ 90cm motorised system, Slingbox Solo |
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28-04-08, 12:57 PM
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#2 (permalink) |
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Senior Member
Join Date: Apr 2008
Location: North East England
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Re: Polarity
quoted from an article
L = Left, R = right for circularly polarized DBS satellites. H = horizontal, V = vertical for linearly polarized satellites |
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28-04-08, 01:02 PM
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#3 (permalink) |
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Just very slightly mad
Join Date: May 2006
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Re: Polarity
It stands for Left and Right hand circular polarization and is more common on 'C' band. I don't believe you can receive these without the correct equipment, or some serious modification to a 'Ku' band setup.
Yorks 
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 They're coming to take me away haha TM1500CI, 53E to 61W  |
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28-04-08, 01:12 PM
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#4 (permalink) |
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Site Moderator
Join Date: Jan 2006
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Re: Polarity
There are a few L&R Ku band sats in the skies above Europe - mainly operating into Russia. I think Eutel W4 has L&R on it.
Youcan just about watch H/V signals on a circular polarity lnb, - Ive tried it  - but the losses are truly horrendous, and its only possible on very strong signals.
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29-04-08, 11:24 AM
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#5 (permalink) |
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Senior Member
Join Date: Oct 2007
Location: Herefordshire
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Re: Polarity
Thanks everyone, It was a fair bet that it would be left and right, interestig stuff.
Regards
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TM1500c+ 90cm motorised system, Slingbox Solo |
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