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CODAR
I received this email reply to my letter regarding intererence from CODAR in
New Jersey: Michael, I apologize about the interference. What frequencies encompass the 60 meter band? We (Rutgers University) operate several sites along the New Jersey coast. There are many other groups, most academics, who run other sites all over the world. There are many users of the data outside the academic community, including the Coast Guard, NOAA, and K-12 education All the systems operate at low power (~ 40 watts). Since there are many sites around the world, the operators are making efforts to get primary bands for the system. I have already spoken with several SW listeners and asked what frequencies we should try and avoid. I was told to try and stay below 4.7 MHz. We are trying to do this. Unfortunately, the FCC is restricting the frequencies we can use and has asked that we move some of our sites to 4.8 MHz. The primary bands will allow us to stay at the lower frequencies without having the FCC ask us to move. I am not sure if our sites are causing your particular interference , but please be aware that the CODAR community is taking steps to get primary bands that will not interfere with others. It is difficult, as you know, because of all the different users that occupy these bands. Please do not hesitate to ask any questions that you may have. I hope that this information has helped. Regards, Josh http://marine.rutgers.edu/mrs/codar.html He replied very promptly and was very polite as well as you can see. I think they would be responsive to polite letters explaining our concerns as shortwave listeners within the constraints of the FCC. |
"If you try to fail and succeed, which have you done?" "Maximus" wrote in message ink.net... I received this email reply to my letter regarding intererence from CODAR in New Jersey: Michael, I apologize about the interference. What frequencies encompass the 60 meter band? We (Rutgers University) operate several sites along the New Jersey coast. There are many other groups, most academics, who run other sites all over the world. There are many users of the data outside the academic community, including the Coast Guard, NOAA, and K-12 education All the systems operate at low power (~ 40 watts). Since there are many sites around the world, the operators are making efforts to get primary bands for the system. I have already spoken with several SW listeners and asked what frequencies we should try and avoid. I was told to try and stay below 4.7 MHz. We are trying to do this. Unfortunately, the FCC is restricting the frequencies we can use and has asked that we move some of our sites to 4.8 MHz. The primary bands will allow us to stay at the lower frequencies without having the FCC ask us to move. I am not sure if our sites are causing your particular interference , but please be aware that the CODAR community is taking steps to get primary bands that will not interfere with others. It is difficult, as you know, because of all the different users that occupy these bands. Please do not hesitate to ask any questions that you may have. I hope that this information has helped. Regards, Josh http://marine.rutgers.edu/mrs/codar.html He replied very promptly and was very polite as well as you can see. I think they would be responsive to polite letters explaining our concerns as shortwave listeners within the constraints of the FCC. I received a similar letter. I am sorry that you are experiencing this interference. Rutgers University operates 6 of these sites along the New Jersey coast. Two are at 24.7 MHz and the other 4 are at 4.55 MHz. I do not think that they are responsible for your interference. (Your email mentioned that the interference was in the 4.775 khz to 4.805khz band. I assume that you meant mhz.) There are other sites operating closer to Maine. I know there are systems on Block Island, RI; Nantucket MA; Nauset MA, Race Point, MA; Green Island, ME; and Yarmouth, CAN. The HF Radar sites operate at very low power (40 W) and are used to measure the ocean surface currents. This information is used by the Coast Guard for Search and Rescue, fisheries research, pollution spill response and scientific research to name a few. The operators of these sites have made efforts to work with the shortwave listening community. I spent quite a bit of time speaking with several shortwave listeners to select frequencies that would be less obtrusive. In fact, the sites on Block Island, Nantucket and Nauset were originally set to operate at 4.45 MHz as per the request of the SW community to try and keep our frequencies below 4.7 MHz. These sites operated at 4.45 MHz for 6 months before the FCC requested that we move to 4.8 MHz. Unfortunately we cannot control the wishes of the FCC. Since we all have secondary licenses we are subject to the discretion of the FCC. I hope that this response has answered some of your concerns. If you have any more questions please do not hesitate to ask. Regards, Josh -- 73's Rick Drake R8 R8B ICOM R75 Yaesu 7700 Hammarlund SP-600-JX-17 |
Rick KB1KIL wrote:
"If you try to fail and succeed, which have you done?" "Maximus" wrote in message ink.net... I received this email reply to my letter regarding intererence from CODAR in New Jersey: Michael, I apologize about the interference. What frequencies encompass the 60 meter band? We (Rutgers University) operate several sites along the New Jersey coast. There are many other groups, most academics, who run other sites all over the world. There are many users of the data outside the academic community, including the Coast Guard, NOAA, and K-12 education All the systems operate at low power (~ 40 watts). Since there are many sites around the world, the operators are making efforts to get primary bands for the system. I have already spoken with several SW listeners and asked what frequencies we should try and avoid. I was told to try and stay below 4.7 MHz. We are trying to do this. Unfortunately, the FCC is restricting the frequencies we can use and has asked that we move some of our sites to 4.8 MHz. The primary bands will allow us to stay at the lower frequencies without having the FCC ask us to move. I am not sure if our sites are causing your particular interference , but please be aware that the CODAR community is taking steps to get primary bands that will not interfere with others. It is difficult, as you know, because of all the different users that occupy these bands. Please do not hesitate to ask any questions that you may have. I hope that this information has helped. Regards, Josh http://marine.rutgers.edu/mrs/codar.html He replied very promptly and was very polite as well as you can see. I think they would be responsive to polite letters explaining our concerns as shortwave listeners within the constraints of the FCC. I received a similar letter. I am sorry that you are experiencing this interference. Rutgers University operates 6 of these sites along the New Jersey coast. Two are at 24.7 MHz and the other 4 are at 4.55 MHz. I do not think that they are responsible for your interference. (Your email mentioned that the interference was in the 4.775 khz to 4.805khz band. I assume that you meant mhz.) There are other sites operating closer to Maine. I know there are systems on Block Island, RI; Nantucket MA; Nauset MA, Race Point, MA; Green Island, ME; and Yarmouth, CAN. The HF Radar sites operate at very low power (40 W) and are used to measure the ocean surface currents. This information is used by the Coast Guard for Search and Rescue, fisheries research, pollution spill response and scientific research to name a few. The operators of these sites have made efforts to work with the shortwave listening community. I spent quite a bit of time speaking with several shortwave listeners to select frequencies that would be less obtrusive. In fact, the sites on Block Island, Nantucket and Nauset were originally set to operate at 4.45 MHz as per the request of the SW community to try and keep our frequencies below 4.7 MHz. These sites operated at 4.45 MHz for 6 months before the FCC requested that we move to 4.8 MHz. Unfortunately we cannot control the wishes of the FCC. Since we all have secondary licenses we are subject to the discretion of the FCC. I hope that this response has answered some of your concerns. If you have any more questions please do not hesitate to ask. Regards, Josh -- 73's Rick Interesting that the FCC doesn't care if US based CODAR interferes with international broadcasters in the 60-m band. Apparently the FCC needs to get some emails about this subject too. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
If they are in New Jersey or anyplace on the east coast and only using 40
watts or less, they are getting out phenomenally well LOL. I think they must be using more than that. Why does it have to run 24/7 ? I always thought radar operated at much higher frequencies. "starman" wrote in message ... Rick KB1KIL wrote: "If you try to fail and succeed, which have you done?" "Maximus" wrote in message ink.net... I received this email reply to my letter regarding intererence from CODAR in New Jersey: Michael, I apologize about the interference. What frequencies encompass the 60 meter band? We (Rutgers University) operate several sites along the New Jersey coast. There are many other groups, most academics, who run other sites all over the world. There are many users of the data outside the academic community, including the Coast Guard, NOAA, and K-12 education All the systems operate at low power (~ 40 watts). Since there are many sites around the world, the operators are making efforts to get primary bands for the system. I have already spoken with several SW listeners and asked what frequencies we should try and avoid. I was told to try and stay below 4.7 MHz. We are trying to do this. Unfortunately, the FCC is restricting the frequencies we can use and has asked that we move some of our sites to 4.8 MHz. The primary bands will allow us to stay at the lower frequencies without having the FCC ask us to move. I am not sure if our sites are causing your particular interference , but please be aware that the CODAR community is taking steps to get primary bands that will not interfere with others. It is difficult, as you know, because of all the different users that occupy these bands. Please do not hesitate to ask any questions that you may have. I hope that this information has helped. Regards, Josh http://marine.rutgers.edu/mrs/codar.html He replied very promptly and was very polite as well as you can see. I think they would be responsive to polite letters explaining our concerns as shortwave listeners within the constraints of the FCC. I received a similar letter. I am sorry that you are experiencing this interference. Rutgers University operates 6 of these sites along the New Jersey coast. Two are at 24.7 MHz and the other 4 are at 4.55 MHz. I do not think that they are responsible for your interference. (Your email mentioned that the interference was in the 4.775 khz to 4.805khz band. I assume that you meant mhz.) There are other sites operating closer to Maine. I know there are systems on Block Island, RI; Nantucket MA; Nauset MA, Race Point, MA; Green Island, ME; and Yarmouth, CAN. The HF Radar sites operate at very low power (40 W) and are used to measure the ocean surface currents. This information is used by the Coast Guard for Search and Rescue, fisheries research, pollution spill response and scientific research to name a few. The operators of these sites have made efforts to work with the shortwave listening community. I spent quite a bit of time speaking with several shortwave listeners to select frequencies that would be less obtrusive. In fact, the sites on Block Island, Nantucket and Nauset were originally set to operate at 4.45 MHz as per the request of the SW community to try and keep our frequencies below 4.7 MHz. These sites operated at 4.45 MHz for 6 months before the FCC requested that we move to 4.8 MHz. Unfortunately we cannot control the wishes of the FCC. Since we all have secondary licenses we are subject to the discretion of the FCC. I hope that this response has answered some of your concerns. If you have any more questions please do not hesitate to ask. Regards, Josh -- 73's Rick Interesting that the FCC doesn't care if US based CODAR interferes with international broadcasters in the 60-m band. Apparently the FCC needs to get some emails about this subject too. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
In message .net,
Maximus writes If they are in New Jersey or anyplace on the east coast and only using 40 watts or less, they are getting out phenomenally well LOL. I think they must be using more than that. Why does it have to run 24/7 ? I always thought radar operated at much higher frequencies. Perhaps he was quoting 'average power', in which case the peak power could be well over a kilowatt. Mike -- M.J.Powell |
"M. J. Powell" wrote in message ... In message .net, Maximus writes If they are in New Jersey or anyplace on the east coast and only using 40 watts or less, they are getting out phenomenally well LOL. I think they must be using more than that. Why does it have to run 24/7 ? I always thought radar operated at much higher frequencies. Perhaps he was quoting 'average power', in which case the peak power could be well over a kilowatt. Mike -- M.J.Powell I live in Maine and the frequency that I get the most interferance from is 4.8. So I guess the interferance I'm getting is from Green Island, Maine or maybe Yarmouth Nova Scotia. The really sickening thing about it, I can hear it 24/7, it never goes away. -- 73's Rick Drake R8 R8B ICOM R75 Yaesu 7700 Hammarlund SP-600-JX-17 "If you try to fail and succeed, which have you done?" |
Given the power they use, I wonder if NOAA or someone else is using it hear
on this side of the country ? "Rick KB1KIL" wrote in message ... "M. J. Powell" wrote in message ... In message .net, Maximus writes If they are in New Jersey or anyplace on the east coast and only using 40 watts or less, they are getting out phenomenally well LOL. I think they must be using more than that. Why does it have to run 24/7 ? I always thought radar operated at much higher frequencies. Perhaps he was quoting 'average power', in which case the peak power could be well over a kilowatt. Mike -- M.J.Powell I live in Maine and the frequency that I get the most interferance from is 4.8. So I guess the interferance I'm getting is from Green Island, Maine or maybe Yarmouth Nova Scotia. The really sickening thing about it, I can hear it 24/7, it never goes away. -- 73's Rick Drake R8 R8B ICOM R75 Yaesu 7700 Hammarlund SP-600-JX-17 "If you try to fail and succeed, which have you done?" |
Rick KB1KIL wrote:
"M. J. Powell" wrote in message ... In message .net, Maximus writes If they are in New Jersey or anyplace on the east coast and only using 40 watts or less, they are getting out phenomenally well LOL. I think they must be using more than that. Why does it have to run 24/7 ? I always thought radar operated at much higher frequencies. Perhaps he was quoting 'average power', in which case the peak power could be well over a kilowatt. Mike -- M.J.Powell I live in Maine and the frequency that I get the most interferance from is 4.8. So I guess the interferance I'm getting is from Green Island, Maine or maybe Yarmouth Nova Scotia. The really sickening thing about it, I can hear it 24/7, it never goes away. You must be just the right distance from the transmitter for 24/7 reception. If you can pinpoint the exact frequency range better, you might be able to ID which CODAR station you're hearing. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
"M. J. Powell" wrote:
In message .net, Maximus writes If they are in New Jersey or anyplace on the east coast and only using 40 watts or less, they are getting out phenomenally well LOL. I think they must be using more than that. Why does it have to run 24/7 ? I always thought radar operated at much higher frequencies. Perhaps he was quoting 'average power', in which case the peak power could be well over a kilowatt. Mike -- M.J.Powell When propagation conditions are favorable, 40-Watts is plenty of power for good reception on HF. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
SNIP
I live in Maine and the frequency that I get the most interferance from is 4.8. So I guess the interferance I'm getting is from Green Island, Maine or maybe Yarmouth Nova Scotia. The really sickening thing about it, I can hear it 24/7, it never goes away. You must be just the right distance from the transmitter for 24/7 reception. If you can pinpoint the exact frequency range better, you might be able to ID which CODAR station you're hearing. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- If I could pinpoint the transmitter I would love to disable the darn thing. It's the most annoying crap I've ever heard except for some of those WACKO SW Broadcasters that buy air time. :) Does anyone remember what wwv used to sound like back in the 60's? That was annoying. -- 73's Rick Drake R8 R8B ICOM R75 Yaesu 7700 Hammarlund SP-600-JX-17 "If you try to fail and succeed, which have you done?" |
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