Need help with some troubleshooting...here is the background: After being gone for a month I returned to find that my iMac would not boot up, the LP100 display had noticeably dimmed and my Steppir 3 ele beam had super high SWR on 20m only. Although I had disconnected p/s and antennas, we had an unusual amount of t-storm activity while gone. I assumed that static discharges had somehow placed gremlins into my shack. The local Apple guy was able to get the iMac running with no loss of data and Larry kindly helped with getting the latest display chips installed but that left the Steppir...why it worked great on 17-6m and it was a mystery on 20m with infinite swr across the band, even after doing the calibrate procedure. Yesterday I decided to upgrade the software of my Orion II and then later the K3. After the O II upgrade I connected the Steppir and was surprised to see that the swr was normal across the 20m band; I then tried it on the K3, infinite swr...I then tried a dummy load on the k3 and yes, infinite swr but only on 20m. I then moved the dummy load to Ant 2 and all was fine. I then hooked the Steppir to Ant 2 and everything is working great. So, here is the question. If the SO239 was bad at Ant1, why does it work on all bands except 20m? Unfortunately, this was a factory built unit, #250, so my knowledge of the insides is very sketchy. What do I need to look for? Tnx Tom CX7TT aka CW7T in CQ WW cw...
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