If all you are looking for is basic RS-232 control, almost any quality USB to RS-232 adapter should work as long as it has drivers for your operating system and you make a cable that connects ONLY pins 2,3 and 5 between the USB/RS232 adapter and the K2 CAT jack. DO NOT connect any other pins as their use is not standard and you could damage the adapter or the K2.
The key is to find a USB-RS232 adapter that uses a MAX232 for the TTL to RS-232 conversion and not one that uses one of the newer CMOS converters. The MAX232 will provide +/- 10 volts on the RS-232 interface where many of the newer CMOS converters provide only +/- 5 volts and may not be reliable with older line driver/receiver circuits. The FTDI based USB adapters by VScom in Germany (sold in the US and Canada by Byterunner - www.byterunner.com) seem to work reliably with the majority of RS-232 devices. If you have a need to CW/PTT/FSK and RS-232 (control) the USB-2COM (http://www.byterunner.com/byterunner/product_name=USB-2COM) is a convenient package. 73, ... Joe Subich, W4TV microHAM America http://www.microHAM-USA.com http://groups.yahoo.com/group/microHAM [EMAIL PROTECTED] > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Derek Brown > Sent: Monday, August 06, 2007 11:16 AM > To: Elecraft Reflector (post) > Subject: [Elecraft] USB Adapter for K2? > > > I'm new to this list. Are there any plans to introduce a USB > adapter / option for the K2? I know that there is already an > "outboard" interface available from microHAM. > > > Derek, WF4I > _______________________________________________ Elecraft mailing list Post to: [email protected] 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
