The major problem with the digital modes (amplitude pulse modes) occured during the initial protocol between the cell & phone. This is a max power mode and occurs prior to phone ringing. The peak powers were as high as 10 watts. Also, during power save modes of TDMA, the packet rate can be as low as 2 Hz. Any rectification in the front end of the pacemakers would see this as a heart rate of 120 beats per minute. This could then inhibit the pacemaker pulses. Fewer than 10% of pacemaker patients are fully dependent for 100% pacing. Therefore brief periods of inhibition would not be noticed by most patients. All observed forms of interference were temporary and never caused microcode corruption or any mode or parameter changes.
All of this was solved by using miniature feedthrough capacitors and became standard industry practice about 20 years ago. Problems solved between cell phones and pacemaker interference. Ed, W9EJB -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-RFI-question-tp6404176p6409226.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
