A method is provided for alleviating congestion in a computer network. In one embodiment, a system includes an electrode array having an implantable support member configured to be implanted into the patient and a plurality of therapy electrodes carried by the support member. A second sensor generates a second signal produced by the flicker of the flame. This current causes a radio frequency signal, which can be detected by a high temperature antenna as the blade passes the antenna. The raised portion may include a bullseye pattern or raised concentric rings, which may have one or more truncated sides interrupting at least the outermost concentric ring.