"Dave" wrote in message
...
Bill Kearney wrote:
"DaveC" wrote in message
obal.net...
Looking for outdoor omni "whip" antenna for 2.4 GHz.

Whip antenna? What is this, for a vehicle? For a stationary location it
seems like it'd be an extremely bad idea to use an antenna that 'whipped'
around.

Is there any reason to not go for the greatest gain antenna, given that
cost
is not too important (within reason)?

Alligator effect. Wide mouth receiving everything. If you don't need to
pickup everything then why bother? It just makes it harder for your WiFi
router to cut through all the noise of distant stations it doesn't
communicate with. Get the right antenna suited for your installation, no
more, no less.

Which leads to the constant request, when you ask a question POST WHAT
GEAR YOU'RE USING.

In your case it would also help to define what sort of connection you're
trying to make. Point to point, metropolitan, etc.

-Bill Kearney
Short Pringle's can, 1/4 wave probe, 1/2 wave from closed end, soldered to
female TNC.
-
I have need of a directional antenna for a 30 foot path within the house.
(the microwave oven wipes out the signal).

Do you have any better details on construction?

I have need of a directional antenna for a 30 foot path within the house.
(the microwave oven wipes out the signal).

Do you have any better details on construction?
================================================== ====
If your WiFi device is near the microwave oven , you indeed have a problem.
In my situation the oven is away (approx 7 - 8 metres) from the Wifi
system ,both router and laptop ,and I no longer had interference when
setting the WiFI System to the highest frequency (channel) with the
microwave oven freq at about 2390MHz.

Frank KN6WH

Guys! I've been selling these Biquads for a long time now and
everyone absolutely
loves them.
Check em out here... http://www.biquadantenna.com
Sold 30 just this month alone, and get emails all the time from
clients
on how good their performance is.
If it doesn't work, you get your money back! (minus shipping of
course)

Thanks for looking!
Pete




On Nov 22, 2:42*pm, highlandham wrote:
I have need of a directional antenna for a 30 foot path within the house.
(the microwave oven wipes out the signal).

Do you have any better details on construction?

================================================== ====
If *your WiFi device is near the microwave oven , you indeed have a problem.
In my situation the oven is away (approx 7 - 8 *metres) from the Wifi
system ,both router and laptop ,and I no longer had interference when
setting the WiFI System to the highest frequency (channel) with the
microwave oven freq at about 2390MHz.

Frank * KN6WH

Knight wrote:
Guys! I've been selling these Biquads for a long time now and
everyone absolutely
loves them.
Check em out here... http://www.biquadantenna.com
Sold 30 just this month alone, and get emails all the time from
clients
on how good their performance is.
If it doesn't work, you get your money back! (minus shipping of
course)

Thanks for looking!
Pete

Which picture depicts the omnidirectional one?

Regards,
JS

-
I have need of a directional antenna for a 30 foot path within the house.
(the microwave oven wipes out the signal).

Yikes! I have never seen that. I would be concerned about leakage.
Sometimes I have torn into things and found stupid stuff like paint over
grounding surfaces or rust in the compartment. There is a critical ground
around the probe entrance.

My microwave oven is in the far corner of the house and I run 100 watts on
VHF and 600 on HF at times and never had trouble. I never tried the laptop
in the kitchen for fear of spillage. The Linksys is essentially on the
floor to keep people in the park next door from ripping up my bandwidth.
(although sometimes I would prefer geeks hanging out there to chase the rest
out) No coverage problems at all. I do have an HT that gets "some"
interference when I set it on top of the oven.

"JB" wrote in message
...
-
I have need of a directional antenna for a 30 foot path within the house.
(the microwave oven wipes out the signal).

Yikes! I have never seen that. I would be concerned about leakage.
Sometimes I have torn into things and found stupid stuff like paint over
grounding surfaces or rust in the compartment. There is a critical ground
around the probe entrance.


The laptop computer is downstairs about 10 feet from the microwave, and the
wireless router is upstairs about 30 feet away with a desktop(and the path
goes through three walls and the floor. The microwave doesn't wipe out the
laptop, but slows things down a bit. A directional antenna would solve the
problem. I'm not trying to increase range at all.

Wayne wrote:

...
The laptop computer is downstairs about 10 feet from the microwave, and the
wireless router is upstairs about 30 feet away with a desktop(and the path
goes through three walls and the floor. The microwave doesn't wipe out the
laptop, but slows things down a bit. A directional antenna would solve the
problem. I'm not trying to increase range at all.



I had a cheap samsung (I think that was it) microwave, it did slow
internet ...

I now have a 1.2 KW GE ... it does not ...

However, a leakage meter did show leakage from the samsung, and barely
reads on GE I have now, and I mean I touch the microwaves case to get
that reading!

So, what is the point? Buyer beware, with lack of consumer protection,
I would check the microwave myself rather than trust others to safeguard
me ...

Regards
JS

"Wayne" wrote in message
...

"JB" wrote in message
...
-
I have need of a directional antenna for a 30 foot path within the
house.
(the microwave oven wipes out the signal).

Yikes! I have never seen that. I would be concerned about leakage.
Sometimes I have torn into things and found stupid stuff like paint over
grounding surfaces or rust in the compartment. There is a critical
ground
around the probe entrance.


The laptop computer is downstairs about 10 feet from the microwave, and
the
wireless router is upstairs about 30 feet away with a desktop(and the path
goes through three walls and the floor. The microwave doesn't wipe out
the
laptop, but slows things down a bit. A directional antenna would solve
the
problem. I'm not trying to increase range at all.

It would certainly be best to remove the interference. If you have 4 bars
now, 5 bars might not do away with the problem. Moving the microwave just
5' more might be enough. You may have to bite the bullet and put in some
wiring to move the router.

Some of these guys are prone to take a practical problem like yours and turn
it into a full-blown engineering problem or a swap meet for their break
through technology or even an opportunity to throw mud. One engineering
problem we faced was how to contain UHF security and housekeeping repeaters
to a high rise building and it's underground structure. The final result
was 99% coverage in the building and the parking structure, but when
security went off the property, the radios went away. Visits to other
buildings showed no coverage there either. We had to do that for both
security and so we could get co-ordinated for licensing in an urban area.
But it was a multi-million dollar system. This is free.

Placing one of those in an upstairs room is an invitation to the neighbors.
I run a combination of wired and wireless. Wired to the desktop and to a
port replicator for the laptop and wireless to a print server with several
printers in a shop area, and the AP is off unless I want to roam around or
do print jobs. There are times I have printed from the laptop, wireless in
the shop to baby-sit print jobs, but it keeps the office clear and quiet.
One of these days I will have to run a cat5 out to the shop. It is simply
faster and more secure. The end result is my router, 1 foot off the floor
with the power set to 50% to do all I need to do.