[MLB-WIRELESS] Antenna Orientation

evilbunny evilbunny at sydneywireless.com
Fri Dec 27 13:38:09 EST 2002


Hello Matt,

MP> Just a quick question about antenna's for those of you in the know.  I
MP> realise that antenna's normally are polarised horizontaly or vertically, so
MP> in saying that if more people with PTP links using directonal antenna's
MP> turned them 90degree's would this mean you could effectively run 2 cards on
MP> the same channel right next to each other but on differently polarized
MP> antenna's because they would not interfere with each other ??  Would this
MP> also work for tipping the antenna onto a 45degree angle ??

Turning the antenna 45 degrees = 3dBm loss, turning 90 degrees = 20dBm
loss, so you can *IF* you have enough physical separation between them
on the mast... or 2 directionals looking the other way etc etc etc,
physical separation is the key though...

-- 
Best regards,
 evilbunny                            mailto:evilbunny at sydneywireless.com

The best kind of cat toy has a person on one end.

http://www.cacert.org - Free Security Certificates
http://www.nodedb.com - Think globally, network locally
http://www.sydneywireless.com - Telecommunications Freedom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 1966 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://lists.wireless.org.au/pipermail/melbwireless/attachments/20021227/62a3a2ac/attachment.p7s>


More information about the Melbwireless mailing list