Hi Callum , good video and advice, have installed inline choke (2s removed)ring mains socket,then on seperate 20a feed socket from Dist board (dont worry i am a retired elec eng )added a TV Cath Ray tube def ring (knew i would have a use for it one day! wife calls it junk!) 12turns 2.5mm 3 core ,good up to 7mhz .But as the cables run together there is crossover ,so installed clip on s (31 mat)on meter side of dist board (4 on ph +N) 4 (Largest) on Earth bundle (- 1 s point) noise level now nearly as good as running station on batteries.. Its like adding radials to a vertical contstrained only by budget 73 s .

I've had good success with my ferrites. Dropped noise floor 2 S units in some situations, but even a few dB can be mighty useful in working those weak signal contacts you really wanted to make....

FWIW I made a copy of the GM3SEK filter but without using the clip on ferrites (but using the correct mix) it made a significant improvement to noise levels. I was able to just unplug the radio to swap from "filtered" to "unfiltered" at best about 2 S-points drop. 3 turns on those cores is not really enough for the lower HF bands, you can get 6 or 7 easily if you strip the sheath off the cable. The 12v distribution is good advice, some of the wall warts are a nightmare for noise.

Nice video. It would be great to see a comparison of receiver noise with and without the ferrite sponge ;-)

I'm happy you employ Metrics... 👌

Thank you for sharing . If the coax cable was placed through a steel flexi tube or copper pipe the ferrite filtering noise reduction wouldn't of been required & sadly ferrites do very little in terms of noise reduction , though ferrite is indeed mainly effective within DC power supplies , for future cable replacement or addition steel square galvanized box trunking cable management can be used , it's ideal shielding from 50Hz , & SMPS supply noise ,the box trunking will require an earth grounding to slug down any exterior electromagnetic noise within the radio room area. Ferrites can be sort of used as an addition ,though ferrites are normally used to help reduce spikes but anything to help reduce noise , though the steel trunking would work without doubt & would provide positive results without fail , this method will work beyond question , but it is more expense . If the material cost is a factor there is a cheaper alternative for those at home for example , as in 25X16 sticky back PVC trunking , prior to placing the coax into the trunking place silver foil first neatly into the trunking cavity & then place the coax in to the trunking cavity & fold both sides of the foil over the coax , it's not as good as the steel trunking or copper tubes , silver foil would also be tricky to earth too , but it would still be far more effective then ferrites nevertheless , the aim would be ideally isolate in flexi steel from antenna right up to the back of the radio , you'll bless the day & won't look back rest assured . I find it fascinating on those that spend huge amounts on radios & yet have exposed coax cables , interesting .

Hope you checked the correct polarity and earth on those sockets Callum. I don't think you doing your own electrics are legal.... not here anyway. Stay safe, I like your video's! 😉⚡️⚡️⚡️

Hi Mr. Callum, Well I finally found you again.. That is Good.. ♠W.G.

Would have been good to see the difference in quality of the power lines on a oscilloscope before and after

are those "ring" circuits? You guys wire the house in ring circuits? no direct home runs to the service maine panel? I am amzed that works! wow!!! PS your videos rock! I am saving up for ur antnna! hopefully soon!

Hello - I rarely comment on peoples KZfaq offerings. You seem very helpful to a lot of people. May I suggest - When you are connecting your 6mm metal rod to the flexible (what ever it was), A good interface, that may grip both pieces very well could be shrink tube.. I know, not a biggy, right? Have a goodday VK5AMJ

In the radio shack is it better to use ferrites in the power cables that go to the radios of should have them on the antenna cable ?

Great video, as always but where are those related links you mentioned you'd put in the notes? Thanks again..

Can you provide the link to where i can get these exact Ferrites that you are using in this video. Thanks

Bait & switch. Common Chinese tactic.😂. "Here's your T240....oh, wait. Our bad!" Ancient Chinese secret (if you know, you know).

I wouldn't have put it on a plug top I would have hard wired it straight into the socket and all those extensions on a spur I wouldn't trust them would have used patrices and sockets fed from your trunking loop in loop out

Nice video. Is there a reason for looping through the ferrites individually, or would looping through both at once yield similar results?

Where did you get those ferrites I got some similar but lost that order They were from digikey but I'll be darned If I can find duplicated in short I didn't order enough

WOW where SPECIFICALLY can I purchase these Monster Ferrites? Make and Model #? Mix#? I Wish we had PROPER PLUGS AND SOCKETS like in the UK. 73 DE W8LV BILL

How much noise reduction did you get compared to dirty mains in s points

You have 220V AC as wall sockey power?

great topic! you’re 20amp at 220v ?

Sketchy as #uck. Please NO ONE drill or screw through multiple socket outlets like that. You don't know if you are touching or have damaged the bus bars inside. The screws now protruding on the front could kill you. Putting the flex through the ferrites creates a common mode choke. Good for interference suppression on mains cables. Mr DXCommander please stick to antenna advice... 😬😬😬😁😁😁

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*.. GOOD THIS **#FERRITES** (ONLY "COST" 50 cents !! FOR A "BIG ONE" ..) OR **#WHAT** "YOU" SAY ?? THE "COST" IS ... !!!* *I DID "NOT" HEAR "IT" ...*

Excellent idea and beyond that, awesome dog. KI7YWO