So having got the bhi DIL DSP Receiver, the amount of QRM I was still getting wasn’t good. Although I was slightly tired, i really wanted to solve this issue.
I followed the DX Commanders Youtube posting on QRM here
So i then set about unplugging things around the house, the first thing I found was an electric blanket ! That put out a huge buzz, but there was still plenty of ‘noise’ amongst the signal. I turned everything off in my ‘lab’ and used a car battery to test –
So off a car battery there was a big reduction in noise, so it was something in the powersupply or surrouding room
At this point I used several of these magents and put on the power line in, HF and transformer
very well packaged 
big ring 
the thickness 
lets see what happens when you put two togehter 
thankfully this is just my finger…
I set about winding, but still noise 🙁
what a messy lab 
i’m working in this mess 🙁
By this time, i was still getting less, but still a big interference. I unplugged *eveything* from the transceiver and it stopped ! So it was something being plugged in.. I went thru each device, lo and behold the xggcomms CAT port was the main offender ! By this time it was getting late, and some much needed family time with a few brews and a good film was required to consider the next steps.
After the film and a nice walk of the dog at 11PM (to avoid other dogs/runners/etc) I cam in and started searching for ferrite cores, sure enough amazon had a huge variety, and on PRIME next day, so I ordered think, great i can get these Monday and get going ! Amazingly, even tho i ordered these at 11PM+, they was here the next day ! I was going to tidy the lab up, but set about attaching all the chokes I could to the cables between the mac and transceiver. The difference was amazing…
Within a course of an hour, i had made 9 QSO’s on FT8 on 40m, with 3 already confirmed on QRZ ! I was so happy that everything was working really well !
I think I am going to upgrade my chinese power supply which is meant to drive power-strip lighting, which is fine for VHF/UHF (A recommendation from FRED IN THE SHED on 27Mhz) but for HF I will get a decent 30~40 Amp campable linear PSU for the Kenwood to further reduce the QRM.
Now to stop playing on WSJT-X and tidy this place up !