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#1
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Thanks Harold. What you hear is probably something different. I appreciate
your input. There is some local speculation about a Central or South American source, but I am uncertain about that. Bill W0IYH "Harold E. Johnson" wrote in message newsZb7e.15176$8Z6.14849@attbi_s21... In Cedar Rapids Iowa I hear a constant warbly signal on 14.3175 upper sideband, 24/7. I am not sure if it is local or long distance. It peaks from the South on my rotary beam. A friend in Cedar Rapids 5 miles away hears it also. Does anyone else out there hear it also? Bill, is that it's zero beat frequency? I hear something warbly at 50 Hz bandwidth and with a 5-600 Hz note at 14.318. Mine seems to peak to the NorthEast but VERY weak here in NC. Doesn't move my "S" meter a bit. Can't even hear it in the noise bandwidth when opened up. Regards W4ZCB |
#2
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William E. Sabin wrote: Thanks Harold. What you hear is probably something different. I appreciate your input. There is some local speculation about a Central or South American source, but I am uncertain about that. Bill W0IYH "Harold E. Johnson" wrote in message newsZb7e.15176$8Z6.14849@attbi_s21... In Cedar Rapids Iowa I hear a constant warbly signal on 14.3175 upper sideband, 24/7. I am not sure if it is local or long distance. It peaks from the South on my rotary beam. A friend in Cedar Rapids 5 miles away hears it also. Does anyone else out there hear it also? Bill, is that it's zero beat frequency? I hear something warbly at 50 Hz bandwidth and with a 5-600 Hz note at 14.318. Mine seems to peak to the NorthEast but VERY weak here in NC. Doesn't move my "S" meter a bit. Can't even hear it in the noise bandwidth when opened up. Regards W4ZCB Sounds like the fourth harmonic of the TV Color burst frequency. 73, John |
#3
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Sounds like the fourth harmonic of the TV Color burst frequency. 73, John Certainly does but my wife was gone for the day and naturally, no TV sets on in the house. BUT now that you mention it, my beam did peak towards the neighbors house maybe 400 feet away and they were home. Regards W4ZCB |
#4
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That is an interesting suggestion, 3,579.38 kHz.
Does that sound right? Bill W0IYH "Harold E. Johnson" wrote in message news:Yhi7e.12269$GJ.2287@attbi_s71... Sounds like the fourth harmonic of the TV Color burst frequency. 73, John Certainly does but my wife was gone for the day and naturally, no TV sets on in the house. BUT now that you mention it, my beam did peak towards the neighbors house maybe 400 feet away and they were home. Regards W4ZCB |
#5
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That would be 3,579.38
Does that sound right? Thsnks for the suggestion. Bill W0IYH "John" wrote in message ... William E. Sabin wrote: Thanks Harold. What you hear is probably something different. I appreciate your input. There is some local speculation about a Central or South American source, but I am uncertain about that. Bill W0IYH "Harold E. Johnson" wrote in message newsZb7e.15176$8Z6.14849@attbi_s21... In Cedar Rapids Iowa I hear a constant warbly signal on 14.3175 upper sideband, 24/7. I am not sure if it is local or long distance. It peaks from the South on my rotary beam. A friend in Cedar Rapids 5 miles away hears it also. Does anyone else out there hear it also? Bill, is that it's zero beat frequency? I hear something warbly at 50 Hz bandwidth and with a 5-600 Hz note at 14.318. Mine seems to peak to the NorthEast but VERY weak here in NC. Doesn't move my "S" meter a bit. Can't even hear it in the noise bandwidth when opened up. Regards W4ZCB Sounds like the fourth harmonic of the TV Color burst frequency. 73, John |
#6
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William E. Sabin wrote:
That would be 3,579.38 Does that sound right? 3,579.545 -- Doug Smith W9WI Pleasant View (Nashville), TN EM66 http://www.w9wi.com |
#7
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Quite right. Thanks. I can hear the fundamental, second and third harmonics
as well as 14.317. That last one is S7 on my receiver with my beam pointed South, so it is local in my neighborhood. Is anyone else hearing the harmonics of 3.5795 ? Bill W0IYH "Doug Smith W9WI" wrote in message ... William E. Sabin wrote: That would be 3,579.38 Does that sound right? 3,579.545 -- Doug Smith W9WI Pleasant View (Nashville), TN EM66 http://www.w9wi.com |
#8
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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 |
#9
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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 |
#10
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"William E. Sabin" wrote in message news:cAs7e.16678$8Z6.1255@attbi_s21... Quite right. Thanks. I can hear the fundamental, second and third harmonics as well as 14.317. That last one is S7 on my receiver with my beam pointed South, so it is local in my neighborhood. Is anyone else hearing the harmonics of 3.5795 ? Bill W0IYH Well, that explains why I couldn't hear it. Ours is 4.43361875MHz. Brad VK2QQ |