[bars] WRKO RFI on 14.280 MHz

[Craig Davidson]

 Hi Jim,
I think If it's actually a spur from the station then a filter wont help.
This morning, I am able to see the 680 KHz station at 21.280 MHz using *NO* antenna, but just a short two foot piece of coax connected to the rig. I see it on both of my receivers.


>From Art - NF1A

"I could not hear it at my home station on 14280 tried 4 antennas various polarizations including hex beam at 40 ft pointed south. I live just north of the Billerica Country Club golf course.  Let me know if it still persists.  I may throw my Grundig G6 in the car and drive around and monitor the next time I run errands in Burlington.

 

Art
NF1A"
Thanks for your report Art.
Since I have the signal with a terrible antenna (short piece of coax), and it responds like a normal signal to attenuation, can I assume my digital front-ends are not overloaded? Is it more likely I'm seeing the 21'st harmonic spur from a station a few miles away? Also - this just started a few days ago - no real change to my setup.
-Craig, K1CWD




    On Saturday, February 11, 2023 at 10:32:06 AM EST, n1hts at comcast.net <n1hts at comcast.net> wrote:  
 
   If AM stations are bleeding in, buy a filter. 
   
   Morgan Filters (kf7p.com)   
   jim  
  On 02/10/2023 7:19 PM Christopher Lennon <kwaj.speedo at gmail.com> wrote:   
   
   I live in Bedford.  I hear 680kHz loud and clear, but that is WBEZ.  
   I only have an SDR receiver with a simple wire antenna set up at the moment.  I didn't hear anything on 14.280.   
   Chris W2BPL   
   On Fri, Feb 10, 2023, 12:32 PM ARTHUR PIZER <apizer at comcast.net> wrote: 
  
    Hi all I’ve been sending these replies from my iPhone voice to text feature from my cafeteria during lunch at work so I apologize for any typographical errors or that is to say transcription errors when I get home I will give a listen for my shack tonight 73 Art  
  On 02/10/2023 12:27 PM Craig Davidson via bars <bars at w1hh.org> wrote:   
   
    
   Thanks for all the replies from everyone. I'm not sure if everyone sees the replies through the reflector, but wanted to add some additional info:   
   I have two rigs, an ANAN 7000 and an IC-7300. Both rigs see the AM signal at 14.280.   
   I can tell it's WRKO because I switch to the AM band and hear the same dialog on their station. Of course, their station is booming because I'm only a few miles away.   
   There is no overload condition on the front-ends of either receiver that I can tell. I can reduce the input attenuation and the signal is still there, although reduced somewhat with the attenuation, which is to be expected I think if it's actually interference being picked up by the antenna, as opposed to an RFI path after the front-end.   
   I have two wire antennas with two separate feedlines, and have the interference on both antenna's.    
   This just started recently, and can't correlate it to any change I made in my station.   
   Thanks,   
   Craig   
   
      On Friday, February 10, 2023 at 11:32:10 AM EST, Craig Davidson via bars <bars at w1hh.org> wrote:   
   
       Good Morning,   
   Has anybody else noticed interference at 14.280 from the WRKO station broadcasting at 680 KHz?   
   This seems to have started a few days ago.   
   I'm pretty sure it's not receiver overload on my end, but actual out-of-band stuff generated by the station (granted that my QTH is very close to the transmitter in Burlington).   
   I tried calling the station numbers I had available but just get voicemail.   
   Anybody deal with this before, or have good contact info for the station engineer?   
   Thanks,   
   Craig, K1CWD    _______________________________________________ 
bars mailing list 
bars at w1hh.org 
http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org 
   _______________________________________________ 
bars mailing list 
bars at w1hh.org 
http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org 
 
 _______________________________________________ 
bars mailing list 
bars at w1hh.org 
http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org 
 
 _______________________________________________ 
bars mailing list 
bars at w1hh.org 
http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org 
 
 _______________________________________________
bars mailing list
bars at w1hh.org
http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.w1hh.org/pipermail/bars_w1hh.org/attachments/20230211/e12dcd53/attachment.htm>