I think I have a roll of 12 Ohm 2w resistors at home. If you use 9 in series and 8 in series, then connect those two stacks in parallel, you will get 50.8 ohms, and I think about 20w of power handling...not sure on the power...if someone wants to run that through the Cray and get the exact number, I'd be thrilled to know it.
I will give away a set of 17 resistors to anyone that mails me a postage paid, 4 by 6 inch, padded envelope. I think two stamps will do it...maybe three if you are having doubts. I have used these in homebrew dummy loads and crammed it in a Altoids tin....you need to supply a connector and the Altoids tin. My address is good on QRZ... BUT WAIT UNTIL I GET HOME TONIGHT TO MAKE SURE I STILL HAVE THEM. The spool had about 400 on it...so I hope I have it. I'll post again tonight. 73 de KB9BVN Brian Murrey On Thu, Mar 26, 2015 at 2:26 PM, Richard Solomon <w1...@earthlink.net> wrote: > You can often find Dummy loads at your local Ham Flea. I found two 50 Watt > Birds > for $10 each at the last one. > > 73, Dick, W1KSZ > > > On 3/26/2015 11:15 AM, Fred Jensen wrote: > >> Mine works fine at 220, VSWR on 440 is about 1.3:1 and rising fast. On >> the QRP one I made, I left about 1" leads on the resistors, I had a small >> brass tube to connect the center conductor down to the bottom plate and I >> didn't want to cut it. VSWR on 6 meters is 1.6:1. >> >> 73, >> >> Fred K6DGW >> - Northern California Contest Club >> - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 >> - www.cqp.org >> >> On 3/25/2015 8:13 PM, Charlie T, K3ICH wrote: >> >>> Yes, but the inductances are all in parallel. I built a decent dummy >>> load out of 24, 1200 Ohm, 10 watt wire wound resistors all in parallel >>> between two squares of fiberglass PC board. The SWR was only about >>> 1.2:1 on 15 Meters and about 1.5:1 on 10 meters. Admittedly, not a >>> perfect load, but certainly adequate for the low bands just to soak up >>> some RF. >>> >>> 73, Charlie k3ICH >>> >>>> >>>> If you're going to use the paralleled metal film resistor construction >>>> method, be sure to keep the resistor leads short and spaced them from >>>> each other. Lead inductance will start to become a factor on 6 m and >>>> up. I built mine with 40 2K 2W resistors and it works find at 100W if >>>> used intermittently. It's air cooled. Don't know how much putting it >>>> in oil would improve the dissipation. >>>> >>> >> ______________________________________________________________ >> 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 w1...@earthlink.net >> >> > ______________________________________________________________ > 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 kb9...@gmail.com > -- 73 de KB9BVN Brian Murrey ______________________________________________________________ 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
