Paul, Anytime I have seen strange problems with serial cables they've been caused by homebrew cables. Please see if you have an OEM straight through cable (not a null modem cable) and see if that helps. Also make sure the jack screws are well secured to the K3 to maintain a good solid connection.
------------------------- 73, Greg - AB7R Whidbey Island WA NA-065 K3#0009 and 0319 On Thu Mar 20 2:39 , M1PAF sent: > >Hi list, > >Bit of a strange issue here with serial comms between the PC and the K3. >First a bit of description about my set up: I use an external noise sense >antenna in addition to the main station antenna to cancel out some nasty >local electrical noise with a Timewave ANC-4 noise phasing unit. This is >connected to the RX out / RX in jacks on the transverter interface (this is >a great feature). > >The issue I have is this: when I use a USB serial adapter I get no >additional noise issues when the computer is polling the rig. However, my >computer has a serial port which I would rather use. I made up a cable with >pins 2, 3, 4, 5, and 6 straight through and the cable shield soldered to the >shell of the d-type that connects to the K3. When I use this cable the radio >picks up bursts of noise from the noise sense antenna (which is not good if >I'm using it to null out other local noise). > >This is obviously radiation from the serial cable but I'm at a loss as to >why (incidentally also tried some ferrites on the cable and they made no >difference). > >Any suggestions? > >Thanks Paul M1PAF > >-- >View this message in context: >http://www.nabble.com/K3-serial-cable-shielding--- noise-question-tp16175101p16175101.html >Sent from the Elecraft mailing list archive at Nabble.com. > >_______________________________________________ >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 _______________________________________________ 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
