To listen to an archive show would be wonderful xxx

Dam dude, CPU running at 71c, i hope that's not idle. 🥵

Hi Jonathan. Did you ever opened the DXpatrol unit to see what is inside? Last month I came back from a project in Kuala Lumpur, <alaysia, where I set up a QO-100 system for my friend there, 9M2FRI, who bought (Friedrichtshafen) the separate boxes on the DXpatrol stand there, like the upconverter box, the downconverter box, the poweraplifier and the GPSDO gps 10 Mhz oscillator, and of course the antenna-cone (a bit flimsy). I think that the same PCB are in that stand-alonebox that you have. Would be great to get some info from you on the inside of your unit (piccies!) Cheers, de Robbert TA2/PA3Bkl in Istanbul

Many thanks for your inforcmation. If you don't mind, coruld you just let me know how can I connect cable of back panel of Ground station 2.0.

Krasawec

I am looking at trying this mode of coms and wonder in the UK where is the best company to get the DX Patrol up converter? Plus the LNB

Try and do a video and show people how to set this up

Had about the same problem here and track it down to a power over Ethernet camera on my garage close to my antennas. Shut off the camera when I want to due ham radio. Emailed the company in China and they tried to help but to no avail.

Interesting

My noise started years go on 30m, then for the last six years affected h.f. from 160m to 20m with the exception of 60m which I could use. VDSL stops about 17 MHz with narrow quiet spots on a few frequencies, guard bands. 5.2 MHz being one guard band which is why I could use 5.262 MHz. The RSGB has data on this. Ofcom said it was my telephone line which had probably become unbalanced due to corrosion and radiating, S8 noise 160m to 20m. I already thought it was my line as I had put a short aerial up to it after walking round with it to locate the noise. B.T. said they would would charge me to take down their offending line. You get a standard letter from a secretary who knows nothing. I don't use B.T. I was doing very little radio and considered giving up. This year it all cleared up when we went to fibre. I've got my hobby back. Good luck with it. G4GHB.

I had this. turned out to be a cannabis farm.

Check for RFI BEFORE you move people! 1Battery chargers for hand tools .2 Touch lamps. 3 LED LIGHTS.4 mains routers. GOOD LUCK

I restore old vacuum tube radios as a hobby. When I was listening to SW channels I was also getting noise across the whole band. Found it was being radiated by the house mains wiring which I had tried to use, to extend my router access over wifi link plug-in units. The wifi extention worked great but the noise from the wiring was too much. They got canned. In the UK I think every third house uses the same phase off the grid (to prevent 415V being available to adjacent properties - unless using 3 phase). These plug-in wifi units can send the signal 200m. So if more than one neighbour is using them or the grounding in the utilities ducting is HR you could be getting the noise off the mains. I didn't check with an analyzer but it sounded similar. Good luck getting a quiet life in a modern world.

Same issue here in Berkshire, it's not always but most evenings. Being in a build up area it's difficult to track it down

I have exactly what you show on 10m. It peaks every 30KHz from about 15m up to 2m. I don't have the mass noise you have on lower bands. I have recently direction hunted it using a 2m HT with a small loop antenna. Noise is definitely coming from my neighbours house and almost 100% sure it is coming from their security cameras which are linked up by cat5 Ethernet cable. I have kind of got used to it over past couple of years as the frequencies are mostly clear and useable in between the spikes, and the spikes themselves can almost be eliminated using my FT-991As DNF and notch filter. I might approach the neighbours at some point, when I think of the best way of going about it.

I had a terrible noise problem. Much static and even a chicken squawking sound! I used a cheap am radio sniffer to track down the area mine was coming from. The city came out and looked at the underground electrical service but found nothing. Finally I was out of town and when came back was told the power was off for a day all down the street. Apparently the underground electric blew up. After that repair the noise went away.

I had a similar problem. Checked online SDRs to see if the problem was local (it was) then set up the radio with a battery and a short wire antenna and went on a walkabout. Turned out the problem was noise radiating from the burglar alarm. House is now insecure but QRM is gone 😄

Get a map then two more friends then walk the area so as the noise is found..trangulat and sickem😊😊

I guess that this is QRN but not QRM.

If all of the below did not help much, take a walk around your area up to 3klm from your qth, log on a map where you find 5G antennas, long range wifi , hi capacity led lights on athletic fields/roads etc. solar panels, etc. once you have collected your data and with a handheld frq. counter and sdr rcvr. you can start finding the trouble. Near my qth 80 & 40m heavy qrm have been noticed by mysterious black boxes on almost every power poles in every neighborhood 100m apart which i have been told is a soon to be active 5g network via the local power provider which literally means qrm everywhere and a concern for electromagnetic safety......... also in your neck of the woods its common to have hidden ant farms as I have seen so take good care to do a good area recon. by the way a T2FD setup will help with the lower HF portion of the trouble. I hope you don't have such troubles where you will have to do serious rf shielding to your home. pls note that all the below comments are correct, but you have to do some searching if it is not from your equipment or neighbors.

Any chance it is an electric fence?

Solar panels nearby? The control unit causes horrendous noise. I now run my radios from a car battery away from the house.

Just get a directed antenna and find out where the noise comes from. Usually neighbours have spent a lot of money and installed electronic garbage. In Germany and Switzerland you can inform the autorities, they will come to find the source and make sure they will stop distributing noise.

Every led mains bulb plus every phone charger for a start

This is why I live on a boat. Perfect earth and no QRM!

Solar panels in your own home, around few block? One operator chased his noise few blocks away to get into a house with solar panels by using direction finding.

Turn off the breakers on your main panel, one at a time, until you determine electronics inside your home is not an issue. Twice, I’ve had an issue with small switching power supplies, one for surveillance and the other for a computer. Similar to old radios, the capacitors may become hot inside their little enclosure and eventually fail. Failure is typical when not using an original power supply that does not supply sufficient current. If you conclude the inside of your home is not a problem, you can use an old AM transistor radio to detect noise sources in your neighborhood. 73

I'm tempted to say that if the grid changed to DC (yeah, I know, not practical), life would be easier... EVERYTHING now runs on PWM switching of coils. And we all know that sharp/fast switching edges on current control to coils generate huge amounts of noise... I can't see it improving. Ever. Shame.

Stating the obvious H.F. bands here in the U.K. are gone at the moment , only Q.R.N. on Broadcast and ham bands received here today 21/072024 . Not even Radio China . The last station heard on H.F. was Channel 292 from Germany on the 5th 07 , 9670 K.h..z. 5/5 . Since then nothing much worthy of mention just Q.R.N. It's not you , it's |H.F. conditions at the moment . 73's DE G4MXC

Normally are mobile phone chargers cheap quality or iPhone manufacturers

QRN Dirty Electrical Components

Agree that you are possibly experiencing two separate interference sources. I have seen the noise you are experiencing on the lower portions of HF as being from a plasma TV. The birdies on 10 meters may be from a nearby switching power supply. Lastly, have you tried switching off your a/c power mains on your house to see if either issue disappears?

two types of interference there.The tone you hear ever xx khz (depends on router clock frequency) on the higher bands (it may be on the lower bands also but being masked by the broadband noise you have there ) is more likely from a router (usually from the gear connected to lan port it is not from wifi) common right up into the vhf spectrum it gets worse with increased data download/upload .The broad band hash noise across the bands could be any thing, but one way to lower it is to use dc ground antennas (the radiator is grounded at dc to earth) if using a vertical and cmc chokes for all antennas ..time for you to take that radio and a short whip and fox hunt the source of the noise out ..be proactive..cmc choke on everything you have will help but finding the actual source of the issue helps more

same here in the midlle of Brazil. caused by cheap chinese LED lamps

having the same even the lines in the display... its there since my neighbours have solarpanels on the roof.. its horrible and they cant change anything they say

grow u boomer

I have had issues with interference on the bands in the past. The solution was very easy…call OFCOM. On two occasions, OFCOM have investigated the interference and found the source. In my case, both were cheap switching power supplies owned by neighbours, and the neighbours were quite happy to bin their power supplies (phone chargers) when Mr OFCOM told them they were interfering. They have the kit and the people to deal with this, and they will happily do so. Make sure you power down your house, run a radio off a battery to ensure you're not causing this first.

Is it constant. Might be worth monitoring it over a few days. Also a magnetic loop receive antenna really cuts this type of noise down.

I have the same, 20 & 40m is unusable, and I've noticed that it only happens when the neighbour that backs onto my place has his garage door open. He's in there with something switched on like LED lights, battery chargers or something like that.

Same problem here at my qth in SA , the source of my problem is cheep Chinese solar installations around me ,more specific the inverters and charge controllers ,also ,cheep switchmode power supplies , they feed back in to the grid and the grid becomes a huge "antenna" network for the noise.80 and 40 is totally useless to me now because of it , sad .

Same shape of noise is visible on websdrs above 21 mhz at least, it is not your local qrm. It is either some result of some solar activity or some global player like HAARP

Some very large US satellites have been launched recently. Boys have to play with their military toys. Just sayin.

Clearly this doesn't come from your house and this isn't QRM originating from the mains since you've experienced it at the park (I am assuming you were using another receiver than the 7300)... I would recommend a couple of videos by ianxfs where he successfully resolved a similar issue using a cheap home build portable loop antenna and radio. Are there other hams very close to your location (grid search in QRZ) ? Perhaps they would be affected too and someone may already have pinpointed the source ?

Okay, let me put on my logical troubleshooter hat, and give this a go. There are two main avenues of approach here, let me explain: There are two possible sources generally, which we can call "internal" and "external". Internal would be anything related to your equipment, your home, your computer equipment including wifi, phones, laptops, and any other appliances in the home. Local wideband noise can some from something as simple as a somewhat loose wire that is sparking away, although this looks a little better organized. External is all the stuff outside of your control. Power lines, phone lines, sun spots, local nuclear plant (kidding), of tons of other things. So first off, eliminate your immediate equipment. Try the same with a different radio, different antenna, etc - making sure to completely power down everything you were using previously including power supplies, power bars, etc. if you still have the same interference, you can basically "clean" your rig as a suspect. Then take either your cleared rig or other cleared equipment, and leave home. Don't just walk across the street, go miles away... preferably away from all sources of obvious noise like power lines, phone lines, transmitter towers, and so on. Go stand on a hill 10 miles away in a farmer's field. If you still have the same sort of noise there, then it is something much larger. If that returns a negative, then start heading back to home, and every mile closer stop and recheck. If you start to hear the noise again, then you know it's something in your area. After that, it's just going around looking for where the noise is strongest and weakest, and making yourself a map. The source location will become clear pretty quickly. Head to that location, and you will find your sources. I am betting very soundly on an LED light that has gone bad in your area, and is making fairly organized wide band noise.

Have you tried tightening up the connections 😂

...Similar Prob...was everywhere...Most detectable with cheapie off station MW radio. Strong up and down street close to waterpipes and wiring going into surrounding residences... Turned out to be a repurposed laptop power supply (now LED Lighting) behind bookshelf... Hard to find as immediate vicinity seemed to be a bit of a null. Turn off house power...gone... Isolate and search... Still providing regulated volts, just wildly oscillating somewhere in input stage. Nuts.

No idea what causes the QRM but that really is bad. I hope you can sort it out. At my previuos QTH I had lots of QRM so I mainly worked /P in the field to enjoy the hobby. Moved to new QTH 3 weeks ago and almost QRM free. 73 de OO4M/ON4MGY

Good stuff mate see ya on IOTA, 73

So glad to hear this song. It was lovely just like Dan's smile and heart.

With my poty and lnb on a 60cm prime focus dish i suffers BAD desense. Hopefully an offset dish will improve the issue.