[MLB-WIRELESS] Success with GHO

[Peter Berrett]

Hi again

I just finished have a stumble around on my roof with my new high gain 
antenna.

1. GHO = -70db (able to connect very well)
2. No sign of IKM
3. Plenty of Aps picked up in all directions
4. Picked up Ivile-pwns-boronia at -90 to -95db (horizontal)

Strangely at one point I picked up a second Ivile signal which seemed 
stronger (-70db) but disappeared.Maybe I was wrong - not sure?

Regards Peter



Brenton D. wrote:
> ah okay cool, yeah my link to gho is down atm, as its still running in 
> ap mode to see if you can get a signal.
>
>
> ----- Original Message ----- From: "Peter Berrett" 
> <berrettp at optusnet.com.au>
> Cc: <melbwireless at wireless.org.au>
> Sent: Sunday, September 30, 2007 3:27 PM
> Subject: [MLB-WIRELESS] Success with GHO
>
>
>> Hi all
>>
>> I have modified the 24db Galaxy dish I purchased off Peter B. and
>> created a new dipole to drive the antenna. I compared it to my cantenna
>> (estimated gain 12 db) and there is definently an improvement of 8-10 db
>> over the cantenna.
>>
>> One interesting discovery was the polarisation of the feed.  The
>> reflector is like a series of copper pieces each about 1.5 cm wide with
>> a similarly sized gap between each. These gaps are quite long (>10 cm).
>> Initially I polarised the feed perpendicular to the copper strips  but
>> the results were disappointing. When however I polarised the feed
>> parrallel to the strips the results were significantly improved. Thsi
>> seems counter-intuitive to me.  I suspect that if I was to put some
>> aluminium fly screen over the gaps berween the strips I would get even
>> more gain. Because the gaps exceed 1/10 of a wavelength it probably is
>> not a perfect faraday cage.
>>
>> I had no problem logging in to GHO although I noted that several nodes I
>> had bookmarked on my laptop were unavailable.  This may be due to the
>> cloud that has been hanging around Mt Dandenong affecting some of the
>> links?
>>
>> I shall try and see if I can get through to FUT today with the Galaxy
>> Antenna from my location (JXG) . It would be tempting to go up to Mr
>> Dandenong and see what kind of range one can get with an antenna like 
>> this.
>>
>> cheers Peter
>> _______________________________________________
>> Melbwireless mailing list
>> Melbwireless at wireless.org.au
>> http://wireless.org.au/mailman/listinfo/melbwireless
>>
>>
>> -- 
>> No virus found in this incoming message.
>> Checked by AVG.
>> Version: 7.5.476 / Virus Database: 269.13.33/1037 - Release Date: 
>> 9/29/2007 1:32 PM
>>
>>
>
>
>