Topband: 1940 kHz Intruder

[Rick Lapp]

I’m fairly confident that I’ve identified the signal to be coming from 1660 kHz, WWRU in Jersey City NJ. There is considerable fading but I confirmed the source by listening to the programming, switching back and forth between two VFOs on the TS890. 

I’m located in Eastern Long Island, NY about 50 miles east of NYC. The 1660 signal is well over S9 and the 1940 is S4-5 max. At times, the signal changes abruptly in amplitude. 

Rick, KC2FD


> On Jan 5, 2023, at 10:23 PM, FRED BELGHAUS <fbelghaus at gmail.com> wrote:
> 
> If we mix 1280 and 1660 we get these 2 stations:
> 
> 1280 WADO 50 kW Day / 7200 W Night (Licensed to NYC) but transmitter in
> Carlstadt, NJ
> 1660 WWRU 10 kW Day & Night Jersey City, NJ
> 
> (Info via): http://mesamike.org/radio/cdbs/amdb.mvc
> 
> These stations are about 12 miles apart.
> 
> Fred W2AAB
> 
> On Thu, Jan 5, 2023 at 12:21 PM Joe Subich, W4TV <lists at subich.com> wrote:
> 
>> On 2023-01-05 11:26 AM, A J wrote:
>> 
>>> It sounds like two station are there possibly more.
>> 
>> Intermodulaton (mixing) ...
>> 
>>> I heard a frequency 1610khz  said.
>> 
>> You have two frequencies, solve for the third.
>>     1940 = 2 * x - 1610 = 1775 (out of band)
>> or  1940 = 2 * 1610 - x = 1280
>> 
>> I would start looking at the allocations for a community
>> where you have a 1610 and 280 close together (preferably
>> co-located).
>> 
>> 73,
>> 
>>    ... Joe, W4TV
>> 
>> On 2023-01-05 11:26 AM, A J wrote:
>>> Hi All
>>> 
>>> It sounds like two station are there possibly more.
>>> 
>>> I heard a frequency 1610khz  said.
>>> 
>>> No directional antenna to the south east. Just North and NE nothing
>>> heard on those. It is heard on the inverted V at varying levels.
>>> 
>>> The info draws a picture. See link below.
>>> 
>>> https://www.contesting.com/data/profile/ve3hj/photo.jpeg
>>> 
>>> 
>>> AJ___ VE3HJ
>>> 
>>> 
>>> 
>>> On 1/5/23 00:09, Frank W3LPL wrote:
>>>> Hi Jim,
>>>> 
>>>> No one has yet reported a strong enough signal to be sure if its a
>> mixing
>>>> product or a harmonic.  Because everyone -- so far -- is reporting a
>> weak
>>>> signal I suspect its a mixing product.  Two reporters said that the
>> audio
>>>> is badly distorted and appears to carrying two programs.
>>>> 
>>>> The signal it too weak here for me to analyze.
>>>> 
>>>> It appears to radiate from the vicinity on northern NJ, NY City or
>>>> southern NY
>>>> 
>>>> Perhaps a Topbander is that vicinity will report a stronger signal
>>>> 
>>>> 73
>>>> Frank
>>>> W3LPL
>>>> 
>>>> ----- Original Message -----
>>>> From: "K9YC" <jim at audiosystemsgroup.com>
>>>> To: "topband" <topband at contesting.com>
>>>> Sent: Thursday, January 5, 2023 4:48:50 AM
>>>> Subject: Re: Topband: 1940 kHz Intruder
>>>> 
>>>> I'm much too far away to hear anything, but the obvious question is, "is
>>>> it a harmonic or a mix?"  So is anyone hearing it loud enough to tell if
>>>> there are two programs or only one?
>>>> 
>>>> 73, Jim K9YC
>>>> 
>>>> On 1/4/2023 7:04 PM, samjos at epix.net wrote:
>>>>>> From NE PA FN11VF bearing is roughly NNE. Too distorted to make out.
>>>>> 
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