Dongguan Antentech Industrial Ltd. is the world's leading designer and
manufacturer of antenna, management solutions for the
telecommunications, data-communications, general electronics, network
equipment, automotive and medical equipment industries. Main products
is car antenna, interphone antenna, TV+FM+DMB car antenna, spring
antenna, GPS+GSM+WIFI car antenna, decorating antenna, flexible
antenna, coaxial cables, connector and accessories. To obtain optimum
performance from these products, specific solutions are worked out in
close cooperation with our customer to accommodate his special needs,
including design of function and appearance and OEM according customer
drawing.
Dongguan Antentech Industrial Ltd.
Address: fifth building Prosperity plaza, lianhu industry district,
tangxia town...

W4NNG wrote:

W4NNG wrote:

==============================
You might wish to consider a wireless router ,with detachable antenna
instead ,either with a standard antenna ,all in a wx-proof enclosure or
with an external high gain antenna.
The advantage of using a router is using a ethernet (cat5) cable of any
length. You obviously have to strap a 12V-DC power cable to the cat5
cable for 'feeding' the router.
The router produces enough heat to keep itself dry in its wx proof ...

Hello fellow HRO's

I've got a 50ft tower w/ rotor. Been thinking mounting a 2.4 Ghz WiFi
antenna on the rotor to see what it picks up in way of WAP / WLAN's

To get around cable loss problem was going to put a USB adapter at antenna
then run USB cable up tower. Have tested USB at ~ 5X it's spec'd range but
suspect the 60 - 70' run will be way too long.

Anyone know of a way to 'remodulate' so to speak to 802.11 wirelessly link
the output from the antenna mounted adapter back to computer?

Thanks for any thoughts

Bob

W4NNG

If you regularly have need to calculate field strength / power / path loss
according to Friis transmission formula, you may find a little calculator I
have written to be handy.

The calculator is called FSC (for field strength calculator) and is a
Windows application, more specifically it requires the .NET Framework V2
which is installed on most recent computers, or can be downloaded from
Microsoft at no charge.

The calculator is described at http://www.vk1od.net/fsc and can be
downloaded and used at no charge.

Owen

Right now I am looking at modifying a unit that receives 850, 900
frequencies.
What I am curious about is the concept of small antennas only in
reverse.
A small antenna might be a autombile antenna used for AM reception.

So, taking the unit to receive 850, 900 MHz freuquences, how well
would it receive 2.4 GHZ frequences?
It would seem that it would receive 2.4 GHZ well due to the concept of
effective length but I am not sure.

Any comments?

Thanks, Dave