Re: [amsat-bb] AO-40, 802.11 Wireless Ethernet Test

[Art Goldman <aegoldm@xxxxxxxxxxxx>]

I can tell you that a Siemens 2.4Ghz digital wireless phone
I recently got, absolutely wipes out AO-40 reception for me.
I have to unplug the base whenever I work AO-40.

It shows up as a series of audio pulses -- about a 2 per
second rate.

Art, N3OY


Reinhard Richter wrote:
> 
> Hello Don,
> 
> Wednesday, November 14, 2001, 2:58:23 PM, you wrote:
> 
> DD> Thanks to all who responded to my request for information concerning the 2.4
> DD> gHz 802.11 wireless Ethernet. I installed my Linksys Wireless Access Point
> DD> (WAP) and several D-Link Wireless Network Interface Cards last night.
> 
> DD> I tested the system with AO-40. My receive setup consists of a SSB
> DD> Downconverter and a Conifer 24 dBi mag grid. The WAP was set to the default
> DD> of Channel 6. I aimed the antenna directly at the WAP (6 meters distant),
> DD> swept the entire passband several times and could not detect ANY
> DD> interference. I did create interference for the WAP with my UHF
> DD> transmissions. Each transmission would "lock up" the WAP (located very close
> DD> to my transmitter). I guess I will need to relocate it or turn it off when
> DD> transmitting.
> 
> in the recent AMSAT-DL Journal is an article by DL6NDI who has
> performed just this test as a task in his job. He was not only testing
> wirelass Lan but also Bluetoth which operates also on 2.4 GHz. He
> found out that the transmit power is rather low and so the signals are
> covering only a small area in average of 50 meters. Blutooth even covers
> less. Frequencies of WAP starts at 2.407 GHz center frequency. But
> DL6DNI has not tried out to transmit and observing if WAP or bluetoth
> are influenced.
> 
> 73,
>  Reinhard
>  DJ1KM
> 
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