On 8 Jan 2010, at 21:09, Grant wrote:
...
I'm extremely sceptical of these cheap external aerials. If it were
an
expensive one from a specialist supplier then I might have higher
expectations, but I'm pretty sure a customer of mine used one
similar to
yours, and they used to use a book to balance it at an angle to try
& get
reception. This was between offices on adjacent floors, almost one
right
above the other (surely less than 20' sideways).
...
Can you recommend a specialist supplier, especially in the US?
I had to google for recommendations to pass on to you, but found:
I've had great results mesh networking with 15dbi omnis
available from http://www.wlanparts.com. With line of
sight I can connect to these from over 1/2 mile a way with
my laptop. Watch your transmit power as with high gain
antennas its easy to venture in to illegal power levels.
See: http://www.rflinx.com/help/calculations/ Remember high
transmit powers only increase range if both ends increase
their power. In most cases increasing power does little
good at just one end of the link.
<https://forum.openwrt.org/viewtopic.php?pid=35766#p35766>
Indeed wlanparts.com would appear to be the kind of folks I had in
mind (they look to me like the kind of people you could email for
advice - if you were to email them the question you originally posted
to this list, maybe they could suggest a replacement?) but it might
also be worth searching openwrt.org & it's forum for aerial or antenna
and take a look at few more of the results there (i.e google "aerial
or antenna site:openwrt.org" will include the forums).
Stroller.
