I am not very familiar with a Carolina Windom but I believe it is just a horizonal wire fed off center. These types of antennas can have significant common mode current on the feedline. Perhaps there is more current on 40m than on 80m so it works on 80m.
A resonant dipole with a choke may solve this HI CUR issue. John KK9a Pete Smith N4ZR wrote: I send a few characters of CW into my Carolina Windom on 40M and after a delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR warning, and the audio gain is reduced significantly. Touch the AF gain control and it instantly returns the gain to normal, but frequently the HI CURR warning returns over and over, without any additional transmissions. This sequence does not happen, even with 1500 watts, into my dummy load, nor does it happen on the same antenna on 80M, or on 20 meters on my tribander. I've read the HI CUR warning discussion on page 65 of the manual, but it doesn't seem relevant, because I don't have external speakers. The fact that it only happens when feeding an actual antenna on one band suggests RFI, but the fact that the HI CUR warning and gain reduction recur again and again long after any RF has me puzzled. Any suggestions gratefully accepted! -- 73, Pete N4ZR ______________________________________________________________ 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
