Toby Thanks for your thoughts and experience with the subject at hand.
Wayne is on vacation and will take up the matter upon return. I will keep you message as a reference once we take it up again 73, John, W1QS On Jun 28, 2009, dj7...@muenchen-mail.de wrote: Hi John and the List, > What I've discovered and reported to factory tech support is a very > noticable hash noise while in the receive mode with any bandwidth > centered around 28.000 MHz to 28.050 MHz. And, it is also present > while tuning RIT. I noticed something like this after adding the secondary receiver to my K3 many months ago. At least in my case, the actual physical layout (routing) of the cables to and from the synthesizers, the reference and the receivers turned out to be critical and rather touchy. After a fair amount of fiddling I managed to reduce the hash to a point where it was below the noise level from the antenna on a quite, inactive band. Apparently something was coupling into and then elsewhere out of the shields of the coax wiring around the synthesizers. If I remember correctly, the smallish knob for the secondary RX was worse than the big main knob, and when the two receivers were tracking the hash was much stronger then when they weren't Because I do not do 5MHz or 50MHz, I can't really comment about these bands. vy 73 de toby -- DD5FZ (ex 4n6fz, dj7mgq, dg5mgq, dd5fz) K2 #885, K2/100 #3248, K3/100 #67 DOK C12, BCC, DL-QRP-AG ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
