[reaperducer]

Hmmm... I'm able to use my BT headset, Apple trackpad, third-party keyboard, and an old SonyEricsson mc600 all on the same MacBook Air with zero problems, other than the appallingly short battery life in the (now retired) trackpad. This is immediately next to an iMac with Apple BT keyboard and Apple BT mouse, again with zero problems.

Is it possible there's something else in your environment interfering with the BT signal? Perhaps an office with lots of other BT connections?

[wolfgke]

> Is it possible there's something else in your environment interfering with the BT signal? Perhaps an office with lots of other BT connections?

Bluetooth uses the frequency range between 2,402 GHz and 2,480 GHz. This is in the ISM band that is also used by Wi-Fi. Indeed according to the German Wikipedia article on Bluetooth (I could not find such a remark in the article in the English wikipedia)

> https://de.wikipedia.org/w/index.php?title=Bluetooth&oldid=1...

Bluetooth can be disrupted by Wi-Fi, microwave ovens and cordless phones (but not by cordless phones using the DECT standard as is common in Germany).