Let me know if this 1940 spur still exists. If yes, I’ll make some inquiries by other routes…
— Eric > On Apr 20, 2023, at 14:57, A J <[email protected]> wrote: > > I contacted them last year, after all the help from people on here that > confirmed where it was coming from. > > Called a few times and tried to get to the station engineer; never happened. > I did explain to them what was happening etc. I do not recall who I had > talked too. > > Left it at that a period of time and it was gone, then it came back. I gave > up. > > Have not been on that frequency since it came back. Did not want to get the > Government involved. > > Hope you have better progress than I did. > > Eric has some great info that I did not have. > > > > Cheers AJ___ VE3HJ > > > On 4/20/23 14:14, James V Redding PE via Topband wrote: >> Call the owner/operator at >> >> https://mrbi.net/ >> >> or more directly with a free cell phone call to: >> >> *MRBI Headquarters* >> >> 40 Exchange Place, Suite 1010 >> >> New York, NY 10005 >> Tel: 212-966-1059 >> Fax: 212-625-2894 >> and let them know of your concerns. It is not a small business. . . They >> own 39 stations. >> >> Curious! You did not mention that the program content was in Mandarin or >> Spanish. >> >> CUL, >> >> Jim/VEZ >> >> On Wed, Apr 19, 2023 at 10:35 PM Eric Scace K3NA <[email protected]> >> <mailto:[email protected]> wrote: >> >>> Hi Frank, everyone — >>> >>> One does not need another person to be harmed by the intermod on 1940 >>> kHz >>> >>> AM broadcast regulations include a very strict bandwidth mask for any >>> form of radiated spurious signal more than ±75 kHz from the carrier >>> frequency. At these power levels, such spurs must be less than -80 dB below >>> the carrier (measured at a point about 10 wavelengths from the center of a >>> directional array, usually in the main beam). >>> >>> There are very specific measurement procedures to be followed for >>> compliance. Every AM station is required to measure — and retain a report >>> of compliance in their station transmitter logs — annually (no more than 14 >>> months between measurements). The measurement procedures require some care, >>> a very good spectrum analyzer, and a calibrated antenna. >>> >>> If the station is out of compliance, it has 10 days to return to >>> compliance before notifying the FCC. If the problem cannot be repaired >>> within 28 days, the station must obtain an STA to continue operations. >>> >>> === >>> >>> Now, as to the identity of the stations. The FCC’s AM Query < >>> https://www.fcc.gov/media/radio/am-query> >>> <https://www.fcc.gov/media/radio/am-query> webpage is invaluable for >>> researching issues like this. >>> >>> Rick identified one audible program as from WWRU. WWRU operates 10 kW >>> daytime with a 2-tower directional array at 40° 49' 13.36" N 74° 04' >>> 02.51” W. The tower registration numbers are 1040103 and 1242403. At night >>> it runs 10 kW into a 4-tower array >>> >>> A search of AM stations within 3 km reveals, as reported by others, >>> WKDM on 1380 kHz. [Note: Be careful using AM Query’s “radius around a >>> lat-long” search tool, as the input must be in NAD-27, not NAD-83 >>> coördinates.] >>> >>> WKDM uses a 3-tower directional array (daytime) at the same >>> coördinates, and a 4-tower directional pattern at night. Tower #1040103 is >>> shared by both stations. That means a diplexer is employed to combine the >>> signals into this tower — and would be the first place to look for >>> generation of a mixing product. >>> >>> === >>> >>> What to do? >>> >>> Both stations run 10 kW or more. On that basis alone, the chief >>> engineer of each station is required to be an employee of the station — not >>> a contract engineer. (The same requirement applies to any AM station >>> running a directional pattern.) That means the chief engineers will be easy >>> to contact — just call the station’s main phone number. WKDM’s website is >>> here <https://www.am1660.com/> <https://www.am1660.com/>, and >>> [email protected] <mailto:[email protected]> <mailto: >>> [email protected]> <mailto:[email protected]> is the general email address. >>> +1-718-352-1660 is the >>> phone number at their headquarters location. >>> >>> If this is unsuccessful, one can escalate to the points of contact >>> registered with the station license. In this case, a search of the FCC LMS >>> database reveals both stations are owned by the same company and have the >>> same points of contact: >>> [email protected] <mailto:[email protected]> <mailto:[email protected]> >>> <mailto:[email protected]> … and the legal representative is >>> Mark Lipp at [email protected] <mailto:[email protected]> >>> <mailto:[email protected]> <mailto:[email protected]> >>> >>> If no satisfaction has been obtained, anyone can file a complaint with >>> the FCC Enforcement Bureau explaining that these two stations are operating >>> out of apparent compliance, with the support data and information about how >>> the station management has been unresponsive. The Enforcement staff >>> maintain contact numbers for each station to use in cases of emergency, and >>> will follow up (as I have personally witnessed). >>> >>> I hope this helps. >>> >>> — Eric K3NA >>> >>> >>> >>> >>>> On Jan 6, 2023, at 18:03, Frank W3LPL <[email protected]> >>>> <mailto:[email protected]> wrote: >>>> >>>> Hi Fred, >>>> >>>> We've figured out the mystery, now we need to determine if anyone is >>>> being harmed by the weak, intermittent intermod on 1940 kHz >>>> >>>> 73 >>>> Frank >>>> W3LPL >>> _________________ >>> Searchable Archives: http://www.contesting.com/_topband - Topband >>> Reflector >>> >> _________________ >> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector > -- > Knowledge is Power and Power is Knowledge.___AJ___1967 Tell me and I will > forget. Teach me and I may learn. Involve me and I shall understand. ___AJ___ _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
