| Author |
Message |
    
Tumbleweed
Junior Member
Username: Tumbleweed
Post Number: 17
Registered: 10-2004
| | Posted on Friday, June 22, 2007 - 7:27 am: | 
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I have Uniden Washington base station with a modest linear amp. It was bleeding over onto my neighbors TV and computer speakers so I bought a TVI filter from Copper. I hooked it up and it bleeds onto my computer speakers and TV so it appears the TVI filter is doing nothing. Is it defective? Is there something else I can do? There were not instructions but I assume the filter goes between the linear and antenna. Thanks! |
Tech808
Moderator
Username: Tech808
Post Number: 13936
Registered: 8-2002
| | Posted on Friday, June 22, 2007 - 8:03 am: |
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Tumbleweed,
Your TVI Filter should be connected Directly to your radio by a double male coax connector pictured below.
Answering the following questions will be a big help in solving your TVI problem.
#1 ~ How and where do you have your radio grounded to?
#2 ~ How and where do you have the Amp grounded to?
#3 ~ How and where do you have the TVI Filter grounded to?
#4 ~ How and where do you have your coax grounded to?
#5 ~ How and where do you have your Antenna grounded to?
#6 ~ How and where do you have your antenna, Antenna tower and mast pipe and/or your pushup pole grounded to?
Lon ~ Tech808 ~ N9CEF
CEF#808 ~ CEF HAM#33 ~ CVC#002
Tech808@copperelectronics.com
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Tech237
Moderator
Username: Tech237
Post Number: 824
Registered: 4-2004
| | Posted on Friday, June 22, 2007 - 8:33 am: |
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And one that 808 forgot - do you still cause tvi without the amp??
Simon
Tech237
N7AUS
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Tumbleweed
Junior Member
Username: Tumbleweed
Post Number: 18
Registered: 10-2004
| | Posted on Friday, June 22, 2007 - 6:21 pm: |
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I don't have anything grounded. Would that be the problem? The interference is only with the amp. There are some good ground connections outside that the electric company made on the water pipes. Should I use that for the antenna? What should I ground the radio, amp and filter to? Thanks! |
Tech237
Moderator
Username: Tech237
Post Number: 830
Registered: 4-2004
| | Posted on Saturday, June 23, 2007 - 8:26 am: |
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If the TVI is only with the amp then I'd suspect a possible problem with the amp itself. Try grounding everything according to the methods that have previously been suggested by both Tech-808 and Tech 833.
Have a knowledgable technician check the amp (if you really must insist on running it).
Simon
Tech237
N7AUS
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Tumbleweed
Junior Member
Username: Tumbleweed
Post Number: 19
Registered: 10-2004
| | Posted on Saturday, June 23, 2007 - 12:30 pm: |
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Thanks. I have a good radio so I decided to pack away the linear for now. On side band I don't need it anyway. I think I'll still ground everything though. Thanks again! |
Johhn
New member
Username: Johhn
Post Number: 6
Registered: 8-2007
| | Posted on Friday, August 10, 2007 - 9:00 am: |
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So if you did have everything grounded,and you got poping, stadic . will a noise suppressor work? |
Hotwire
Senior Member
Username: Hotwire
Post Number: 2363
Registered: 1-2005
| | Posted on Sunday, August 12, 2007 - 10:25 am: |
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Johhn, popping static in your reciever? Find out where it is getting in at. If through the antenna try to find the source of the noise and try to stop it.
In the past I have tried different things with static getting in through the power cord. One thing that works really well with a DC powered radio is to install an automotive condensor on the positive lead. Splice the pigtail of the condensor to the positive lead and then attach (ground) the condensor itself to the radio chassis. It works.
KEEP IT REAL!
Kenny
cef491(27.115lsb)
2sf491(27.555usb)
Indiana
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Tech237
Moderator
Username: Tech237
Post Number: 864
Registered: 4-2004
| | Posted on Monday, August 13, 2007 - 8:28 am: |
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The other thing that works well, is to wind some slack power cable on a toroid core. Wind it so that the first half of the core is wound clockwise and the second half counter-clockwise.
Use this in conjunction with Hotwires suggestion and you should have the cleanest power line around.
Simon
Tech237
N7AUS
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Mrclean
Member
Username: Mrclean
Post Number: 78
Registered: 12-2003
| | Posted on Saturday, October 20, 2007 - 4:28 am: |
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Ferrite cores on wires going into neighbors tv and also on computer speakers. Make sure they are as close to the tv and speaker end as they can be. |
Tumbleweed
Junior Member
Username: Tumbleweed
Post Number: 24
Registered: 10-2004
| | Posted on Friday, December 28, 2007 - 11:07 am: |
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Follow-up: Found out my coax had a bad ground at radio end. D'oh! :-( |
