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Kaosss
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Ferrite clamps-where to put them?
Heard a lot about these but where do they go? I have a feeling you can put one on mic lead and one on aerial cable but does it matter which end they go? Am trying to get rid of, or cut down on TVI, have got swr right down but still have a problem. They are cheap enough to buy but I dont know what or how they work! Seem to small to do anything to me, but hey, what do I know!!!
Thanks
Al
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Al -163FB777 - N.Wales, UK
Kenwood TS-480SAT, MC-60A mic, 827-Base + 3 elli beam
K40 when mobile
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5/Jun/2008, 7:25 am
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Kaosss
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Re: Ferrite clamps-where to put them?
Thanks for that Paddy, I think I sorted it now, put my aerial up a lot higher, found a few ferrite thingies on some old hi fi stuff, put a new mic on and no tvi so far! Dont know what cured it but it seems to have gone now. Who cares now, problem solved!!!
Well at least on MY stuff, neibours may tell me different tomorow?
Al
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Al -163FB777 - N.Wales, UK
Kenwood TS-480SAT, MC-60A mic, 827-Base + 3 elli beam
K40 when mobile
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5/Jun/2008, 11:33 pm
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Hot Fusion
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Re: Ferrite clamps-where to put them?
Just to complicate matters, TVI may not be coming down the antenna line, or be related to harmonics. This kind of TVI tends to cause patterning on the screen, especially with an unmodulated carrier.
Sometimes, the close proximity of the TV can cause varying changes in the DC bias conditions of the internals of the TV circuitry, causing the picture to flutter as you speak. In severe cases you may even hear SSB audio (as you'd hear in AM mode) coming out of the speaker.
Unfortunately, if this is the problem the only real cure may be to reduce power, or get a better TV, although as the RF may be finding its way into the TV via the coax, winding the TV end of the coax a few times around a ferrite core will reduce this by blocking that entry route.
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6/Jun/2008, 7:10 pm
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topbuzzuk
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Re: Ferrite clamps-where to put them?
i will try a ferrite on the tv coax, may even buy a filter to go inline. i dont get the problem when i switch my boosters off but i lose a few channels and the missis watches them, lol. are the plug in filters any good that go on the tv coax?
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6/Jun/2008, 7:22 pm
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Kaosss
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Re: Ferrite clamps-where to put them?
Doh, just had woman from 2 doors up round here, trying to watch tennis and getting TVI. Must have been me coz I`m the only one with a radio round here. Looking for a filter now, its a low pass filter I need I take it?
Al
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Al -163FB777 - N.Wales, UK
Kenwood TS-480SAT, MC-60A mic, 827-Base + 3 elli beam
K40 when mobile
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3/Jul/2008, 1:13 pm
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Kaosss
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Re: Ferrite clamps-where to put them?
low pass filter?
Is this the sort of thing I need?
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Al -163FB777 - N.Wales, UK
Kenwood TS-480SAT, MC-60A mic, 827-Base + 3 elli beam
K40 when mobile
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3/Jul/2008, 1:30 pm
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yamanx1
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Re: Ferrite clamps-where to put them?
Yes that is ideal, may not solve your problem though but its the best place to start, if you keep getting the issue of interference, I'll try and help you solve it, but it may be you wont unfortunately, unless you buy your neighbour a new set 
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3/Jul/2008, 9:00 pm
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Kaosss
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Re: Ferrite clamps-where to put them?
Thanks Dave, I think! will try a filter first. Will pop round and see what sort of tv she has, at least she came and seen me about it and not moaned about it behind my back, now at least we can sort something out. I hope! Will be next week now before I can try a filter, dont think there is anywhere local I can pick one up. Will keep you posted.
Al
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Al -163FB777 - N.Wales, UK
Kenwood TS-480SAT, MC-60A mic, 827-Base + 3 elli beam
K40 when mobile
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3/Jul/2008, 10:19 pm
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