My thanks to everybody. It is rather overwhelming for just a Sunday afternoon of portable operation in remote counties powered by the car. I will really want to keep simple in those terms.
Reading through all this several times. Thanks to all who contributed. On Mon, Aug 24, 2020 at 11:26 AM Jim Brown <j...@audiosystemsgroup.com> wrote: > Of course it applies. Mother nature does not pay attention to what we > CALL things. It is quite common for DC and mains power to carry AF and > RF currents. That's how most noise is radiated -- as a common mode > signal on cables connected to equipment that includes noise sources. > > BTW -- as Vice-Chair of AES Standards Committee for 20 years, I HAVE > studied this stuff extensively, along with colleagues around the world > with excellent engineering chops. > > 73, Jim K9YC > > On 8/24/2020 8:47 AM, Rich NE1EE wrote: > > Well...this reply covers a lot of ground. We are addressing power lines > running DC, not signal lines with high freq signals? Even audio moves the > question from DC to audio frequencies. I have seen coupling of AC to very > long DC signal wires (current loop or voltage sensors, such as RTD), but I > am addressing hundreds of meters. I have not looked at the effect for > shorter wires running essentially DC, in an environment where there are > high freq signals to couple. But then, I included the inline filter from > the start, so I don't know if it did any good or not. For $30 (I think?), > it was not worth thinking about. I'm familiar with twisting, crosstalk, > etc, for signals, but not sure that it translates to DC power supplies of > short length. > > ______________________________________________________________ > 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 > Message delivered to w3tb....@gmail.com > -- 73 de Ted Edwards, W3TB and GØPWW and thinking about operating CW: "Do today what others won't, so you can do tomorrow what others can't." ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
