[TowerTalk] Snow and rain attenuation/Charts

[Pat Barthelow]

>From: "Robert Chudek" <k0rc at pclink.com>
(snip)
>But that aside, is there a frequency where rain and snow have a significant 
>attenuation due to its presence in the path?
>
>73 de Bob - K0RC
...................................
A google Image search using       "Attenuation    +Rain" provided a lot of 
information about path attenuation vs rate of rainfall, vs frequency...eg:

http://sina.sharif.ac.ir/~barkeshli/antennas/review/9510_032.htm

73, DX, de Pat Barthelow AA6EG aa6eg at hotmail.com

>Date: Mon, 31 Oct 2005 11:12:08 -0800 (GMT-08:00)
>From: Bill Jackson <k9rz at radiks.net>
>Subject: Re: [TowerTalk] Snow and rain attenuation
>To: Dan Hearn <dhearn at wwnw.net>, "Towertalk at Contesting.Com"
><towertalk at contesting.com>

>Dan,
>
>I work with 6 GHz point to point microwave systems at the railroad.  We do 
>not use heated antennas or radomes.  However, I would recommend you install 
>a dish antenna that includes a fiberglass radome.  This will keep ice and 
>snow from forming on the feedhorn and reflective surface of the dish and 
>will actually lower the amount of wind loading from the antenna.
>
>At 6 GHz, the amount of additional path attenuation due to falling 
>rain/snow in the air at 6 GHz is negligible and should not be a concern.
>
>73 de Bill, K9RZ