Horrible 10 over interference on all bands
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N1EXA
FT8 Huntin Mudd Duck on the deep end of the pond !
Inside antenna outside antenna?
legnth of the antenna and is there a tuner on it.
Horizonatal or Vetical antenna and Feed line.
Lots of factors play in on this one.
The link does not work every time so I pasted it to a new Browser window.
Pete N1EXA
legnth of the antenna and is there a tuner on it.
Horizonatal or Vetical antenna and Feed line.
Lots of factors play in on this one.
The link does not work every time so I pasted it to a new Browser window.
Pete N1EXA
Only thing I can think of is to beg, borrow, or steal a handheld HF receiver. Walk around (or drive around) the neighborhood with it and see if you can locate the source that way..
For what it's worth, the ARRL has an article on finding RF interference, but it's somewhat elaborate. Probably more than the average person would be willing to take on. https://www.arrl.org/files/file/RFI/Thompson Noise.pdf
For what it's worth, the ARRL has an article on finding RF interference, but it's somewhat elaborate. Probably more than the average person would be willing to take on. https://www.arrl.org/files/file/RFI/Thompson Noise.pdf
N1EXA
FT8 Huntin Mudd Duck on the deep end of the pond !
Ive experimented with horizontal then vertical and made one with a 9:1 balun and went up 8 feet then went horiontal and with a tuner
could get WRMI in Miami on 5.950 in the evening - It came down to trying everything - just tossing out 50 feet of wire did not work.
I agree move the radio or get some portable and walk around the house.
I have some awful noise during the day around here below 40 meters say 7-4 Mhz.
Pete N1EXA
could get WRMI in Miami on 5.950 in the evening - It came down to trying everything - just tossing out 50 feet of wire did not work.
I agree move the radio or get some portable and walk around the house.
I have some awful noise during the day around here below 40 meters say 7-4 Mhz.
Pete N1EXA
wtp
Member
street light, oh, that was the other guy.
power line connection ?
there guys here just finished banging the poles with large hammers, after a hurricane.
you could try that after getting the handheld radio.
power line connection ?
there guys here just finished banging the poles with large hammers, after a hurricane.
you could try that after getting the handheld radio.
What frequency? What time of day? What day? We recently had auroral conditions that messed up SW and LW, at least here where I live in WA state. This was about 2-3 days ago (the night of the 5th or 6th). I heard static like that all across the 31 meter band. WWV was absent. The 49 meter band was the same way. Just static. Even Cuba, which generally is a perennial here, was nothing but static.
So, although you might have legit RFI, some of it -- depending on your time of reception -- could have been abysmal SW conditions.
So, although you might have legit RFI, some of it -- depending on your time of reception -- could have been abysmal SW conditions.
Does the noise occur 24/7? I suspect power line noise. A change of antennas or antenna location might be the solution. I use a vertical which is prone to noise but a loop worked better when I had one 'cause you could null out most of the RFI.
I have your radio's big brother, the CRF-230. Mine is prone to RFI as generated by my PC, shack TV and other appliances in home as well as some of the neighbors. Can you put some batteries in it and take it to a local park (I know, its heavy) and see what occurs?
tvengr
Well Known Member
If you have a portable radio, walk around the neighborhood to see if you can track down the source. If in a rowhome, walk around your home to see if you can locate a hotspot. An AM broadcast receiver or CB radio should do the trick. It could very well be in a neighbor's home. USB power supplies are notorious for wideband interference.
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NC1
Member
I guess since we haven't heard anything back for days from him, either the issue is resolved or the radio has gone to a landfill.
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No, I don't check here often enough! 🤣 Still here. My Sony? In a landfill? 😳 Nooooo....
It's not the radio-they all do it.
N1EXA hit it... between 7-14 mhz. Always there but worse during the day.
I thought of walking around the neighborhood with a portable with lousy sensitivity or a collapsed antenna. (if it ever stops raining)
It's bad with the whip or the outside long wire. I don't get complicated, it's a simple 50 foot with a wire leadin, it's what I've used forever. My Tecsun PL-PL-680 is the only radio that overloads out of dozens.
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First thing to try is to unplug all wall warts, aquarium heaters, and all CFL and LED lights. If it is still there, then start looking at the neighborhood with a portable.
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That's next. I had already shut the whole house off.
tvengr
Well Known Member
A portable scanner with CB radio and aircraft AM frequencies would be easy to carry.
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Oh, I've certainly got enough portables! 😁
I have similar noise and it is power line noise. Try driving through your neighborhood with the car radio set to an empty AM frequency and listen for the noise level. Try direction finding with a portable AM radio - again tuned to an empty frequency. Try an localize the noise. My power line noise goes from AM all the way up into the SW bands. Another possibility, see if the noise goes away after a rain storm. If so, it is definitely power line noise.
It still sounds to me like regular SW background noise, especially that which one can hear on a poor conditions, SW DX night. I've heard much, much worse. AC powerline hash, which in the 1980s I used to deal with almost on a continual basis, is a lot louder and more irritating than what I'm hearing in the vid clip.
It it's indeed been going on for months, it might be RFI. But stronger stations should still break through that level of RFI. We probably need more info to accurately determine what the noise might be.
It it's indeed been going on for months, it might be RFI. But stronger stations should still break through that level of RFI. We probably need more info to accurately determine what the noise might be.
Have a relative who consistently has s9-s10 rfi on all bands. He's shut the whole house off and used a battery powered radio and it was still there. He's put in a call to the local power company who sent their specialist out. The specialists drove around the neighborhood and found a couple issues. Repair crews came out fixed issues but the rfi was still there so the specialists came out again and determined it was not the powerlines in the neighborhood causing the issue, they also said the high tension lines aren't causing it either. His neighborhood had a power outage do to someone hitting a utility pole and I had him power up his battery powered radio and the noise was still there. I'm wondering if its coming from one of the stores on the main road but we haven't been able to figure out where its coming from yet. If you end up finding the cause please update us.
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