Don't forget to multiply by two, current makes the round trip. Sent from my iPhone ...nr4c. bill
> On Dec 21, 2016, at 9:19 PM, John Kaufmann <[email protected]> wrote: > > I use a 6-foot run of 10 gauge cable between my power supply (the Astron > RS-35M) and my K3S. With my Fluke DVM, I measured the voltage difference > between the power supply output terminals and the Power Pole terminals > inside the radio. The difference is only .03 or .04 volts under maximum > current draw when transmitting at full power. In other words, the voltage > drop across the entire length of the 10 gauge cable is negligible. There is > no benefit to using a large gauge wire unless you are using a really long > (>> 6 feet) cable. > > > > 73, John W1FV > > > > ----------------------------- > > Date: Tue, 20 Dec 2016 17:34:59 -0500 > > From: "Gary Smith" <[email protected]> > > To: [email protected] > > Cc: [email protected] > > Subject: Re: [Elecraft] K3s - 80W on 160 - Resolved > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset=US-ASCII > > > > Hi Jim & the others who replied, > > > > This is a follow-up for someone in the > > future who looks for the same solution. > > > > Yeah, the small amount of difference in > > the wattage is insignificant but > > considering all the radios I've owned, the > > low end of the bands were always the > > highest output. 10M was usually the lowest > > output & with the K3/K3s, 6M was always as > > good as the other bands watt wise and 160 > > was full output. This not being the case, > > I was concerned. > > > > I had done the calibration and raised the > > output to 87W but that was it. As was > > suggested, I raised the voltage from the > > PS to give me 13.8V on transmit which > > required 14.6V resting. I'm using the > > cable Elecraft supplies and I'm suspecting > > it could be just a tad lower gauge/thicker > > copper to reduce the resistance but on > > 160M, I am now getting a 115W reading on > > the P3 and 113W on the LP-100A. > > > > So the increased voltage was the > > difference in my case. A thicker wire > > would certainly require less voltage than > > 14.6 and that's what I am going to look > > into. With the power Pole connector, I'll > > have to look a little deeper into what > > will work best. I have no crimping tool > > for Power Pole so that makes it more of a > > challenge. > > > > Anyway, thanks Jim & all who suggested the > > higher voltage, it was the answer in this > > instance. > > > > 73, > > > > Gary > > KA1J > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
