On 2 Sep 2008 at 19:16, i8cvs wrote:
----- Original Message ----- From: "Graham Shirville" [email protected] To: [email protected] Sent: Tuesday, September 02, 2008 6:35 PM Subject: [amsat-bb] How best to park your satellite antennas
Hi all,
I cannot remember this question being discussed before!
If you have a nice array of VHF and UHF antennas - 2 stacked X 8 foot
long yagis one ach band plus a 2 foot S band dish, is it best from wind loading and other reasons to park it:
vertically pointing straight up (the dish has a hole at the bottom) pointing to the horizon towards the prevailing wind somewhere else?
I know that at SSTL in Guildford they are usually parked pointing straight
up but I have never been able to find anyone with a really good explanation for doing so.
If you look at 193.51.07.114 you can see the sort of array that I am
talking about!
Many thanks
Graham G3VZV
Hi Graham, G3VZV
Pointing straight up with the main supporting boom in direction of the dominant wind is the best because the dish will offer the minimum surface to the wind while both yagi's are aligned in a way to be seen by the wind as about a single antenna.
The above is my experience with less damages into the windy gulf of Naples
73" de
i8CVS Domenico
Hi Domenico and Graham
Under your latitude it's probably the best way to park a dish but if you lived at an higher latitude things can be quite different...
Look at the first 3 pictures on my web page www.qsl.net/ve2dwe
You will understand why radome are built for. and a bit pricey for an amateur stand point.
This event happens in December first 2006 one of numerous mother nature bad effect but we don't have hurricane here and no palm trees...
"-"
Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE