Larry, There really is nothing much to this "modification." The Z3801A is already designed to easily work on either interface, but most units are configured for RS-422 as the default. It takes perhaps a half-hour to remove a few zero-ohm SMD resistors and solder in a header strip. The simple procedure is described and illustrated here: <www.ad6a.com/Z3801A.html>
73, Eric Lemmon WB6FLY -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Larry McDavid Sent: Friday, March 30, 2012 8:44 PM To: Timenuts Subject: [time-nuts] HP Z3801A Sale On 2/16/2012 Brad Stockdale announced here on Time-Nuts that he had a HP Z3801A GPSDO for sale. I corresponded with Brad several times and he reported that he sold one Z3801A to a list member and that this unit had been modified to provide RS-232 rather than RS-422. Brian subsequently sold me another Z3801A that was not modified to provide RS-232 communication; I have not yet received that Z3801A. I would like to correspond off-list with the buyer of the modified Z3801A; I will appreciate a contact to my email address used here. -- Best wishes, Larry McDavid W6FUB Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland) _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.