"Mrs. Lynnette Annabel Smith" writes:
> it's also worth pointing out that you can configure the band/channel that 
> the TC uses.

        That helps even more so if you can keep the wireless
keyboard from using the channels that the TC uses.

        I've got a pair of bluetooth headphones, however, that
do not have any way to adjust the communications parameters. 

        It's hard to tell for sure, but I think that other 2.4
GHZ  devices in our house and maybe neighboring houses reduce
the range a little. I can stand perfectly still at some point
near the end of the range and the headphones will cut in and out.

        I have a device that converts 2.4 GHZ signals down to a
range I can receive on a tunable UHF radio and it is interesting
to listen for a bit in that frequency range. I could hear the bluetooth
transmitter and receiver in the headphones chattering back and
forth plus neighboring WiFi traffic. It all sounds like pops and
blips of varying magnitude. I think I could also hear somebody's
microwave oven as I could hear a faint but raucous buzz mixed in
with all those spread-spectrum transmitters hopping around.

        I was just standing there in the room, holding the
converter over my head so all that chatter I was hearing was
systems that were probably no more than a house or two away.
That band is getting really crowded.

        If I remember correctly, there are 16 channels in the
United States for 2.4 GHZ devices and all of them are shared by
WiFi, bluetooth and even analog audio and video.

        Here, they are called ISM which stands for Industrial
Scientific and Medical frequencies and they are totally
unlicensed so it's the wild West for sure.

Martin

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