RSGB Convention lecture 2015 - Clean up your shack

Рет қаралды 27,521

Күн бұрын

Ian White, GM3SEK gives helpful advice about how to reduce noise levels on receive and avoid causing RF Interference.
The video is copyright RSGB and the PowerPoint slides and presentation are reproduced by kind permission of Ian White who retains copyright of the material.

Пікірлер: 33

@chr2810gt 5 ай бұрын

Fantastic video! there is so much to be said about grounding and RFI that would make a newbie's head spin but GM3SEK has explained it so well, it's crystal clear!

@TheRSGB 5 ай бұрын

We're glad you found the video helpful. If you haven't already done so you can subscribe to our channel and get updates as soon as we release new content 🙂

@xszl 2 жыл бұрын

A ham that is capable in adding such clear quality audio to his youtube clips is thrustworthy.

@hamradiostation_M0UGE 4 жыл бұрын

Fantastic video, watched it many times, built the mains filter and added a 1:1 choke at the coax... 2 S points of 'noise' gone ! 73 !

@lawrencestringer1262 4 жыл бұрын

Great information there. This should be compulsory at Foundation stage . So many misconceptions around and this lecture sorts those in an easy to understand way.

@ossieclarke6207 6 жыл бұрын

Great explanations with solutions to the problem of rfi in the shack, I will implement immediately- thank you

@thescorpiontattoo 5 жыл бұрын

This is an extremely helpful lecture and has given me much food for thought. Many thanks! 2E0SFP

@nottjohn9418 5 жыл бұрын

Will try the chokes and bonding. Thank you.

@HamDX2LVG Жыл бұрын

Great lecture and very nicely presented. A lot of good tips and pointers to help with the eleminiation of noise. Thank you!

@TheRSGB Жыл бұрын

We're glad you found it useful

@martingibson8273 4 жыл бұрын

gr8 video - totally opposite to what i was told or led to believe in eliminations. Thanks a bunch. Email sent.

@dave-j-k 4 жыл бұрын

Great video, thanks. I'm a bit confused though - should the bonding strap be connected to supply earth or not? At one point you say bonding is not earthing but then you say take it back to supply earth??

@onmolder 3 жыл бұрын

Thanks. 73

@MFGaming2020 4 жыл бұрын

Which power supply come with EMI/RFI filter ?

@trig6712 3 жыл бұрын

RSGB and Ofcom need to tackle Bt, my Receive is almost wiped out by noise here but they are not interested .. Money GM4NNC

@VEChaplin 3 жыл бұрын

Do I understand that it is not recommended to use the "ladder line" since at the connection point a balun cannot be installed there and it is difficult in town to install an antenna perfectly balanced? So the cable will pick up RFIs and it will not be possible to block it even by adding a filter at the end of the "ladder line"?

@joolz989 3 жыл бұрын

Great lecture and a lot for me to take away. I understand the idea of bonding the kit together however does this bonded chain then get connected else where? So much information on shack bonding and it all contradicts itself. No definitive answer on what to do on a a PME supplied property even on the RSGB website.

@nickaxe771 13 күн бұрын

My feed line is 450 twin feed ito the shack directly into my atu as part of my doublet antenna.....will that carry common mode..... Only seem to talk co ax here. I do have around 12ins coax ATU to Rig.

@DavidFindlayQLD 9 ай бұрын

So in my case, my station is entirely battery powered(albeit with solar charging in sunlight). I'm still running S7-S9 HF noise even when not charging. Haven't found anything I can turn off in the house to get rid of noise. Any suggestions?

@charlieoscar09 Жыл бұрын

I didn't understand the NO EARTHING OF THE PSU it's a shame it was rushed over. Can anyone explain this to me or are there references on the Web for guidance.....Thankyou

@brbroberts1 5 жыл бұрын

I've seen a couple of terms here that I haven't heard before; "low bands", mid bands", and "high bands". Can you define those, please?

@otepandrewgutierrez7358 4 жыл бұрын

brbroberts1 rshfujvvjjjjvcbvxmn

@kuniooniumi5370 3 ай бұрын

great de JF1QFH near north Tokyo

@ALEXSANDER109B 2 жыл бұрын

Top!!!!! 73!! QSU QRV PP5ACP

@ianwhite659 7 жыл бұрын

More information here: www.ifwtech.co.uk/g3sek/in-prac/ www.ifwtech.co.uk/g3sek/in-prac/gm3sek_ferrite_chokes_web.pps

@eviscero 3 жыл бұрын

Plays audio sample Talks over it...

@huwdavies2353 Жыл бұрын

Mr white does not mention china at all. He said far east. And saying that is not racist. Eu Europe and UK have higher standards of compliance so we make less profit but better product generally

@billmccullough777 2 жыл бұрын

clean up this audio!

@huwdavies2353 Жыл бұрын

It think the lecture was scheduled and there was a thunderstorm happening. Some electric crashes and rumbling yes. But was at a convention so was at a live event

@spider5895 3 жыл бұрын

2.45: "Failure to control Chinese imports". I have not seen such a general statement that is also so racist. Also, this lecture on RF interference is so superficial. There are many types of chokes and while they look the same, they do not function the same. Almost an hour of ranting but failed to fully explain how the different chokes really work. Suggest placing 3 chokes in a device system is dumb. There are much better videos on this subject produced by much more knowledgeable tech guys who are not as racist like Mr White. Finally, most RF interference are not from poorly designed EC approved equipment but are from aerial interference. I wonder why there isn't a statement to say "failure to control unwanted rubbish broadcasted day-in and day-out by BBC".

@g0fvt 3 жыл бұрын

You may consider it racist, but China is a major supplier of electronic goods and many do have poor RF performance (and often poor safety too). I personally did not take it as a rant about the population of that country. All of the chokes mentioned were common mode types and that was made pretty clear. In my own limited experience choking common mode current on the antenna feeder has dropped my noise levels significantly. Many of the sources of RFI are closer to the feeder by an order of magnitude than the antenna. I have not yet tried the "RF floating" of all of the ham gear in the shack but it is easy enough to try. FWIW I do have a common mode choke on our phone line where it meets the house (we have VDSL) and on the twin coax to our satellite dish My own received noise level on 40m was about 10dB over S9, it is now in the region of S7, I am cynical myself over an improvement that appears to be in the order of 20dB but it has made radio a lot more useable. One wall wart power supply in the shack was a particular RF villain, guess where that was made?

@williethepimp 2 жыл бұрын

So racist my ars*. Calling a Chinese race Chinese? Where does all this nonsense stop?