Phil, You don't say what type of dummy load you are using, but all of the cantenna type have about the same SWR curve you witnessed. You will need a precision DL to get a flat response across a large range. I have two DECIBEL DB4304B 100 watt loads here that are flat up through 2m. I don't think they are made any more and if they were they would be very expensive. The two I have were bought at a ham hamfest for $50 each. They are bout 6" x 4" x 4" Most of which is cooling fins.
Be careful when you buy dummy loads like this at a Hamfest. Take a good ohm-meter with you. I bought a couple of really well made heavy duty DL's that were rated at 300w for $100 once and when I measured them at home they were 75 ohm loads, so watch out! Happy holidays, 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member "If somebody has a bad heart, they can plug this jack in at night as they go to bed and it will monitor their heart throughout the night. And the next morning, when they wake up dead, there'll be a record." --Mark S. Fowler, FCC Chairman, 1981 - 1987 On Thu, 22 Dec 2011 08:37:37 -0800, Phil Hystad <[email protected]> wrote: >Is this normal or can someone explain? I was looking at the R+iX values >reported by the LP100A with my K3 feeding a dummy load. The SWR reported was >always small but never super close to 1:1. Most of the SWR in this setup was >1.1:1 up to 1.5:1. The R values ranged from 34 ohms to up to 59 ohms and X >was ranging over a number of smallish values < 20 for all the bands. > >Is this what most of you would call normal? > >Does the K3 output R+iX vary from band to band (I assume so) and is that what >I am seeing? > >I had thought my dummy load was mostly frequency independent so I am not sure >if I am seeing mostly the K3 here or maybe the K3 plus the 6 feet of coax >(RG8X) + dummy load. > >73, phil, K7PEH > ______________________________________________________________ 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
