I just went through some USB-Bluetooth blues at work. Co-worker is left
-handed and so, mouse is on left side of his monitor where the bluetooth
dongle sticks out from the left side of his Dell LCD monitor. Mouse
works fine.
I'm right-handed, so move the mouse over to the right side of the
keyboard on the desk. Mouse barely works at all. That's barely 3 feet
left to right of re-orientation and what a difference.
His USB dongle is one of those little stubby ones that only stick out
about 3/8" from the USB socket. There might have been interference from
the LCD face being in between dongle and mouse and mouse no longer being
line-of-sight to the dongle.
It's real-world experiences like this that make me wary of using Class 2
bluetooth for my project and it's why I'm asking for others to share
their bluetooth experiences. On paper, bluetooth looks like a great
technology, but I need verification by third party users.
maccrawj wrote:
That makes more sense! Well maybe ones with antenna work better or
something because like I said mine does not even cover 40 linear feet
from one end of house to the other.
Oh, and Never trust store house brands with electronics!
nobozoz wrote:
My bad. Rounded to 2 significant digits:
Class 1 is 100 m (~330 ft).
Class 2 is 10 m (33 ft).
maccrawj wrote:
Interesting!
Well I have an Anycom USB250 which is their re-branded BCM2045 that
I use for VOIP and it does way less than 400Ft/120M/Class 1 it's
spec'd for in practice could be my Motorola HT820 headset nevermind
wifi interference.
Had not realized there were 300M Class 1 transceivers out, what
chipset does it take to get that? Sure would like to replace my
dongle if it meant I could get more than 30Ft in the house. ;)
nobozoz wrote:
I'm interested in the Bluetooth v2.1 spec (higher data rates and
less power dissipation) and Class 1 (300m) range. I'm looking for
low-power, high data rate wireless data technologies with enough
range that they be battery powered for days or weeks at a stretch.
They would be riding up and down on the bell part of a 600 liter
bell prover (a primary gas flow standard).
The Belkin F8T016 (same specs, but Class 2, 10m range) might work
in a pinch, but the short range could be a show-stopper.
Maybe Rocketfish dongle would work as well (Class 2), but never
heard of them.
Broadcom BCM2046 is a Bluetooth 2.1 +EDR Class1 HCI chip in 130nm.
I also saw BCM2070 (65nm) on Broadcom's product list which may be
bumping the BCM2046 - who knows?
maccrawj wrote:
As usual Belkin is less than detailed with the spec sheet! Can't
tell if it's Broadcomm's 2046 or what so I'd be suspect over other
dongles.
What's drawing you to them?
