[MLB-WIRELESS] More antenna ideas (Was: Mobile phone antennas)

[Will Lotto]

I couldn't find anything on sydneywireless, but google is your friendT
http://www.clearsat.com/product.htm

Were you referring to the "special umbrella dish covers" ... Pretty
funny, but I don't know how we'd justify having an outdoor table and
umbrella on the roof of a house :)

Will.
> -----Original Message-----
> From: evilbunny [mailto:evilbunny at sydneywireless.com] 
> Sent: Monday, 24 June 2002 1:31 PM
> To: Will Lotto
> Cc: melbwireless at wireless.org.au
> Subject: Re[2]: [MLB-WIRELESS] More antenna ideas (Was: 
> Mobile phone antennas)
> 
> 
> Hello Will,
> 
> Have you seen the umbrella satellite dish?
> 
> link somewhere in the ones on sydneywireless.com form memory...
> 
> -- 
> Best regards,
>  evilbunny                            
> mailto:evilbunny at sydneywireless.com
> 
> http://www.SydneyWireless.com - Exercise your communications 
> freedom to make it do what you never thought possible... 
> 
> Monday, June 24, 2002, 1:14:03 PM, you wrote:
> 
> WL> No, you are entirely correct.
> 
> WL> The only reason galexy et al. dishes are a mesh rather 
> than a dish 
> WL> is because of wind loading.
> 
> WL> The amount of braces needed to hold a 2M satallite dish 
> steady in a 
> WL> strong wind is huge compared to that needed to hold a wire dish.
> 
> WL> Technically a plastic/flywire dish would be perfect for 
> 802.11b, all 
> WL> you need to do is put a standard galexy collector 
> (designes will be 
> WL> somewhere on the net) at the focal point of the parabolic 
> dish and 
> WL> you're set. ... Now all you've gotta do is hold the thing steady.
> 
> WL> I would recommend lard, but I don't know how well it 
> WL> reflects/absorbs/is transparent to 2.4ghz radio signals. I'm not 
> WL> sure if many studies have been conducted in this area either. 
> WL> MelbWireless could lead the world on 2.4ghz lard studies. .. You 
> WL> never know :)
> 
> 
> WL> Will.
> 
> >> -----Original Message-----
> >> From: owner-melbwireless at wireless.org.au
> >> [mailto:owner-melbwireless at wireless.org.au] On Behalf Of 
> >> fenn_b at smktech.com.au
> >> Sent: Monday, 24 June 2002 11:47 AM
> >> To: melbwireless at wireless.org.au
> >> Subject: RE: [MLB-WIRELESS] More antenna ideas (Was: Mobile 
> >> phone antennas)
> >> 
> >> 
> >> > this might be fun to try some time...  mind you, my 
> antenae theory 
> >> > is non-existant, so this might just be a
> >> pipe dream...
> >> >
> >> 
> >> On the theme of antenna ideas, pipe dreams and a complete lack of 
> >> antenna theory: ;)
> >> 
> >> I have been having a think about this - I have access to suitable 
> >> machinery to manufacture a perfect parabolic dish template (in 
> >> whatever: metal, wood, plastic, lard). I was thinking - Would it be
> >> possible/worthwhile with such a template to use something like
> >> fiberglass matting + some sort of metal core (flywire?) laid 
> >> over it to
> >> form a very cheap, very light, high-gain parabolic dish 
> >> suitable for our
> >> purposes?
> >> 
> >> If it's useful, we could have an group antenna-day and churn
> >> out a whole
> >> heap of them to replace the lack of easy-to-obtain galaxies.
> >> 
> >> Am I just waaaaaaaaaaaaay of base here or maybe onto 
> something that 
> >> could be construed as slightly more than completely useless? ;)
> >> 
> >>       Fenn.
> >> 
> >> 
> >> To unsubscribe: send mail to majordomo at wireless.org.au
> >> with "unsubscribe melbwireless" in the body of the message
> >> 
> 
> 
> WL> To unsubscribe: send mail to majordomo at wireless.org.au
> WL> with "unsubscribe melbwireless" in the body of the message
> 


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