[RFI] Further data on my weird RFI problem

[K9MA]

OK, that probably rules out switching power suppies and there kin.

73,
Scott K9MA


On 5/6/2021 8:53 PM, N4ZR wrote:
>
> Hi Scott - I should have mentioned that.  As far as I can tell, each 
> of the frequencies is very stable.  When I finally find it, this is 
> going to be a weird one!
>
> 73, Pete N4ZR
> Check out the new Reverse Beacon Network
> web server at<http://beta.reversebeacon.net>.
> For spots, please use your favorite
> "retail" DX cluster.
> On 5/6/2021 5:24 PM, K9MA wrote:
>> Hi Pete,
>>
>> Is the frequency stable, or does it drift around?
>>
>> 73,
>> Scott K9MA
>>
>> ----------
>>
>> Scott Ellington
>>
>>   --- via iPad
>>
>>> On May 6, 2021, at 9:11 AM, N4ZR<n4zr at comcast.net>  wrote:
>>>
>>> While I wait for the preamp needed to use my WD8DSB portable flag to pin it down, I thought RFI readers might be interested in some more data.
>>>
>>> The signal is present every 50 KHz from approximately 5000 KHz to about 7800 KHz, strongest at around 6450 KHz.  On each of these frequencies it consists of a relatively strong central signal and multiple symmetrical "sidebands" spaced 60 Hz apart.  At the strongest frequency, it is clear that the every-120-Hz sidebands are stronger than those at 60-Hz intervals, and that their strength tapers fairly rapidly as you tune further from the center
>>>
>>> The other thing I have discovered is that it is quite local.  No DF capability yet on HF, but If I go a mile or so away from my QTH, it is not audible on a decent portable SW receiver.  Tried yesterday to quasi-DF it, walking the neighborhood using signal strength, but with inconclusive results. It begins every morning at 0900:02 local time, and continues well after sunset, both of which tend to suggest it is on some sort of timer.
>>>
>>> Do these rather unusual characteristics suggest what kind of an emitter I might be looking for, or must I just wait for the DF hardware?
>>>
>>> -- 
>>> 73, Pete N4ZR
>>> Check out the new Reverse Beacon Network
>>> web server at<http://beta.reversebeacon.net>.
>>> For spots, please use your favorite
>>> "retail" DX cluster.
>>>
>>> _______________________________________________
>>> RFI mailing list
>>> RFI at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/rfi


-- 
Scott  K9MA

k9ma at sdellington.us