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Hello Harold,
The 4th harmonic at 14.317 is 10 dB below the S9 value of -73 dBm when I point my beam due South. That is a strong interference. I can also hear the first, second and third harmonics much weaker. The signal is present 24/7. I just finished talking to the Mediacom Cable TV Co. Tech Service and they are going to send a technician with some detection gear. They want to get it fixed because of FCC requirements and also to satisfy the customer. Defective cables is a common problem that the Cable TV and Wideband Internet Companies are interested in. Mediacom Co. here has been a pretty good company to deal with. My Wideband Cable Internet connection has also been very good. Bill W0IYH "Harold E. Johnson" wrote in message news:jOt7e.16798$8Z6.10348@attbi_s21... Is anyone else hearing the harmonics of 3.5795 ? Bill W0IYH Bill, I have a little TV set on a different desk in the shack here, maybe 10-12 feet from the radio. With it on, I still can't hear the 4th harmonic above an "S-0" with the rig on the yagi. If I go to the inverted L, (L matching network tuned to 40 meters) it comes up a little bit to perhaps a "S-1". That represents a level of somewhere around -120 dBm. Maybe less than that remembering the bandwidth I'm using. Apparently my neighbor is still asleep, I do NOT hear the signal to the NorthEast that I had yesterday. It BTW, was no stronger than this one in the shack today. My homebrew Txcvr is a hamband only, so I can't listen to the other harmonics, but even the fundamental at 3579 is only an S-3 on the inverted L (Voltage fed 1/2 wave on 160) with the matching network on 80 meters. That must be some TV set you're listening to. I remember your article on your antenna, but don't remember, are you by any chance using open wire line? Regards W4ZCB |