| Author |
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Metro
| | Posted on Wednesday, September 12, 2001 - 1:07 am: | 
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I need a good TVI filter, since I set up the Skylab one of the TV's in my house is getting bad bleedover. Copper only sells one for 50.00 when I do a search I found one by ParaDynamics for 20.00. Whats the difference?
Metro |
Forum Master
| | Posted on Wednesday, September 12, 2001 - 4:00 pm: |
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Metro,
I can only find one TVI filter(A65-00072 Solarcon LP99 Low Pass TVI Filter) on our web site. What's the model number on the other filter?
Forum Master |
Metro
| | Posted on Thursday, September 13, 2001 - 7:49 pm: |
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I did the search on the web, it's not on coppers site. Just search the web usig TVI Filter Paradynamics. |
vernonott
| | Posted on Friday, September 14, 2001 - 4:15 pm: |
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Metro:I've spent quite a few bucks on TVI filters and have had little luck with them .They sometimes help,but they won't do a 100% clean up. |
Metro
| | Posted on Friday, September 14, 2001 - 8:57 pm: |
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whats the solution then??? |
vernonott
| | Posted on Saturday, September 15, 2001 - 8:24 am: |
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Talk barefoot when others are watching TV. |
Harpoonman
| | Posted on Monday, September 17, 2001 - 12:22 pm: |
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Metro, consider whether the TV in question is on cable or receiving through an antenna, its location relative to your radio and antenna, its age, and whether it is connected to other compenents like a VCR, stereo, entertainment system, etc.
Even when talking barefoot, I will bleed into the two TV sets at the end of the house where my antenna is located. One set is upstairs in the living room and the other is in the basement rec room. The thing is that both of these TVs are connected into Surround Sound entertainment systems. When I just operate the TVs by themselves, there is very little interference, but when I turn on the stereo systems on these entertainment systems, I come through gloriously, even at only 12 watts PEP. In contrast, my 13 inch TV in my shack, which is located 5 feet from the radio and has its cable coming through the same access as my coax, gets no TVI whatsoever when I transmit with low power. Even with the KLV-550 set to high on AM, the interference to this TV is not as severe as I had expected.
Part of my TVI problem is proximity to the antenna. But, the MAIN problem is the poorly shielded cables that link the different components (cd player, tape player, VCR, etc.) to the Surround Sound receivers, along with the unshielded speaker wires. The speaker wires run a considerable distance to get to all the peripheral speakers. At least in my case, the bleed is coming into these systems through these cables and wires and not through the TV cable itself. When just running the TV on the cable alone, bleedover is minimal. My plan is to see if I can get jumper cables for the components (the ones with the RCA plugs) that are better shielded. They'll no doubt be more expensive than the regular cables from Radio Shack. Perhaps I can get shielded speaker wire, too, again bound to cost more. I'm currently looking.
Another possible fix is to move the TV relative to either the radio or the antenna system (coax too), if this is feasible for you. Sometimes older TVs are more susceptible to bleedover. The TVs I have are all fairly new, cable ready sets. In fact, none of them have the old style 300 ohm connections. If you find that your signal is causing interference through the TV's cable or antenna lead, you might also consider installing a high-pass filter in the line. This combined with a good quality low-pass filter in your coax line may be effective. I don't know how much a high-pass filter will attenuate you TV signal, or how much they cost, but it may be worth considering.
Good luck!
73s
Harpoonman |
vernonott
| | Posted on Monday, September 17, 2001 - 4:37 pm: |
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Metro: The t.v. may also be the problem.Years ago I had a RCA tv and the CB really screwed it up.When I bought a new Sansui tv the CB didn't affect it at all.Some t.v.'s are just better built with more filters etc. inside. |
Insider
| | Posted on Friday, September 21, 2001 - 5:08 pm: |
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Harpoonman:
I use Monster (TM) cables for my stereo interconnects and have had good results. These are thick cables with braided shielding much like coax.
They are a bit high on the price side, but are worth it and guaranteed for life.
You can find them at the big electronic chains (Circuit City comes to mind). |
Biged
| | Posted on Thursday, January 17, 2002 - 11:27 pm: |
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Metro,
From my own experience,here are a few quick solutions.If you run an A99, that is probably half of your problem.They are a splatter stick.If you have a good aluminum antenna laying around, try it , you may be suprised.Another thing to check would be your coax.Try to use 98 or 99% shielded cable.Make sure your ends are soldered on you connectors,both conductors.Ground your antenna to a good earth ground.Also ground your radio with the shortest #6 ground wire you can.Your RFI problem could be 50 different things.Along with what I've already said, it could also be coming in through your TV anrenna,cable tv wires, vcr,dvd,sony playstation, or any other thing pluged into your tv..RFI shielding varies in different brands of electronics.Toshiba...GOOD..GE...BAD.You normally get what you pay for.Some benifits you dont even realize unless you do have problems with TVI.Best thing you can do is start eliminating one thing at a time, you bound to figure it out...73 |
bruce
| | Posted on Friday, January 18, 2002 - 7:59 am: |
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If your getting TVI from any antenna unless yur coax is bad try this connect a 102 inch peice of wire AT the antenna AT the coax connector see if it efects the problem if it does you need to work on stoping the rf from comming back down your coax and there are many ways to do that but start with this rtick |
Vernonott
| | Posted on Friday, January 18, 2002 - 7:41 pm: |
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Comrad Bruce:Exactly what is a rtick? |
bruce
| | Posted on Friday, January 18, 2002 - 8:24 pm: |
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COMRAD??? you make it sound like im a left wing pinco comy ham. it is a trick with the tr inverted yea i saw it after it got posted |
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