Network Products Question

The project I am working is trying to make and outdoor voice/data collection
video point. I have found and am planning on using Toshiba IK-WB11ads
outdoor 802.11B cameras. Their voice ranges sucks. So I end up with zoomed
video and no audio. The pod will have power. The top will have 3 cameras.
I need to find booster mics for the cameras and if possible small shotgun
mics. The thing will have power so I need something to collect the shotgun
mics and send it back wireless.

I have been looking all over - I can't find things to collect the audio only
to send it out.
Any Ideas

"Michael Henry" <(E-Mail Removed)> wrote:
>I have been looking all over - I can't find things to collect the audio only

You might look at the Axis Webcams and accessories, but I suspect that
you'll need external microphones no matte what you do. I'm having
great fun with my 211 Webcam, and they make an audio version of it
with builtin mic and external mic jack...

On Tue, 12 Jul 2005 23:52:18 -0500, "Michael Henry" <(E-Mail Removed)>
wrote:

>The project I am working is trying to make and outdoor voice/data collection
>video point. I have found and am planning on using Toshiba IK-WB11ads
>outdoor 802.11B cameras. Their voice ranges sucks.

http://www.camerawebpage.com/IK-WB11A.pdf

What do you mean by "voice range"? Is that the wireless range from
the camera, frequency response of the modulator, or the audio
microphone pickup range from the microphone? The camea does have an
external microphone input, so it's probably the frequency response of
the modulator. That should be just fine for voice, but not for hi-fi.
What type of "voice range" were you expecting? It's also possible
that you have a marginal wireless link that's inducing considerable
jitter. With 3 radios, you're almost sure to have some RF garbage.
You won't notice any frame slip or image slow down because of the
frame buffering. However, the real time audio will be jerkey. Try
slowing down the frame rate and do NOT use demand feed (which always
uses the maximum frame thruput). Do whatever it takes to reduce the
error rate.

One trick I've used to reduce errors is to crank up the sensitivity by
slowing down the link. Instead of having the wireless access point
run in "auto" speed, slow it down to the slowest OFDM rates of 6 or
12Mbits/sec. That will improve the response time slightly because the
access point won't be juggling speeds all the time. Also, you might
want to try an experiment by isolating *ONE* of the cameras in an
indoor and fairly interference free environment. In other words,
ideal conditions. If the microphone "audio range" is acceptable, then
the problem is fixing the operating conditions, not butchering the
camera.

>So I end up with zoomed
>video and no audio. The pod will have power. The top will have 3 cameras.
>I need to find booster mics for the cameras and if possible small shotgun
>mics. The thing will have power so I need something to collect the shotgun
>mics and send it back wireless.
>
>I have been looking all over - I can't find things to collect the audio only
>to send it out.

Normally, audio is not sent seperately over 2.4Ghz. However, there's
no necessity in using 2.4GHz for audio. If you're looking for a
seperate box for the audio link, look into 49MHz, 170MHz, 460MHz, and
900MHz wireless microphones.


--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 AE6KS 831-336-2558