Oh no! Knock on the door from neighbour whilst txing on SSB

For discussion of ElectroMagnetic Compatibility and RF interference on 4 m

Lack of EMC

Postby GW3MHW » Tue 22 Mar 2011, 14:29

The problem is entirely that of the man with a computer. He will have to find his own answer. The problem is entirely due to lack of curtailing the performance at 70 MHz of his equipment. His equipment will not be affected by FSK or FM however. Winding his L.S. leads and perhaps his mains cables at the equipment end may help. A simple filter inside his equipment may do the trick but better to leave him to find the answer.
de GW3MHW
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Postby G3PTU » Wed 23 Mar 2011, 19:52

Oh dear I did start something, but for very good reasons. The Uk public will blame anybody but themselves. If its cheap or expensive there is no difference - its always the last bloke who touched it. I would NEVER modify anybodies else's equipement, its a formulae for eternal damnation.
My wife goes line dancing, the hall is quite big, when I collected her at the end of the session some years ago, the organiser said the audio was to low level from her "expensive" Ghetto blaster. If it had cost £20 it would have been a robbing case. She argued that at home the device was LOUD but in the hall it was useless. I gave the simple answer which you all can concure with; its Cr*p you are using, too small an output, the room here is bigger etc etc. "No" was the answer "its the electricity at the hall - they are on a cheap tariff, its is not strong enough!" Same thing over somebody who asked me about a surround sound unit - what a heap; Speakers like bean tin lids, about 250mW / Channel. When I gave similar opinion, the wife went into orbit - "I will not have lots of leads - Big speakers etc and this cost £400!" all you I said was "sucures the salesman saw you coming - buy a Denon or similar and you leave it in your will". A remark that the cordless baby alarm had babies on both channels - "But I paid £8 for this and you mean I do not get an exclusive channel?!" These are off the main theme but illistative of the nightmare out there. Cigerettes might be £5.50/ Packet but technology is expensive at 20p.
The TVI you quote is the problem of the complainant - you have been warned.
Sorry the doughters of my advice, the public are stupid to the point of holding your foot up and shooting a hole in it.
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Postby GW8IZR » Wed 23 Mar 2011, 22:14

So there we have it - if you make sure you tell the person with the defective equipment that it is cheap crap or that they were suckered and conned by the salesman , it should go well!

Just be prepared for the complainant to act as per the examples provided above.

I give in.
73 de Paul GW8IZR
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Postby G3PTU » Thu 24 Mar 2011, 09:07

Read my theme again and look at the other option, you modify it. This will never be to the owners satisfaction. Legally the moment you touch it you are liable to fix it, compliently!
When you have changed a light bulb, for nothing, free compasionat action and been told that the replacement one is (Supplied by the requester) not as bright as the old one was - "you have not fitted it right in to the holder" - give up [actually drop the thing on the floor and walk out?, this person got the local electirian to change it and £25 later he just collected his money and walked out]. Leave them to their cheap tat and totally illogical arguments. The fact is you cannot make something worthwhile at the prices that stuff is currectly being sold at. Look at the inside of these things, no filteration, nothing. What about the Switch mode PSU predicament? The manifacturers give the game away in the lables like " Music power" what the hell is that?
You go your way - I tell the truth.
Tell the complainant to call Offcom that's the best way
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