This question gives me cause to post my occasional RANT for the protection of your K2.
CAUTION! Be Aware - your K2 can be damaged by connecting some of the RS-232 signals. The K2 AUX IO port is NOT an RS232 port! Although the port has 3 pins that are compatible with RS-232 levels (RXD, TXD, and Signal Ground), there are other signals present on that connector which are for passing information to other Elecraft devices, and if these lines are subjected to the +/- 15 volt or greater voltages that may appear in an RS-232 interface, circuits inside the K2 may be damaged. Read the label on that K2 connector literally, it is properly labeled 'AUX IO', and that does not mean RS-232. It is unfortunate that the PC world uses these DE9 connectors for RS-232, and it is (was) a PC world implementation only, real RS-232 ports use the DB9 or the RJ45 connectors - these are defined in the RS-232 standard, the DE9 connector is not in the latest standard publication that I am aware of. 73, Don W3FPR > -----Original Message----- > > has anybody already connected a Bluetooth CTR Interface to the > serial port > of the K2? What are the voltage levels needed? RS232 or TTL? > FYI, the CTR Interface page is here: > http://www.lynovation.com/ > > 73! de Werner OE9FWV > > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
