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Help, I am bleeding my TV

Well I got home from work and plugged the extension cord into a separate circuit and guess what, It still does it. I tried the ht standing by the tv and now it is doing it while standing close, before it did not.

The only room the ht dont do it in is the farthest room away at about 30 ft.

When I key the radios, any one of them I get a loud buzzzzing noise.

So now wehat???

This sucks.

AP
 
airplane1 said:
Well I got home from work and plugged the extension cord into a separate circuit and guess what, It still does it. I tried the ht standing by the tv and now it is doing it while standing close, before it did not.

The only room the ht dont do it in is the farthest room away at about 30 ft.

When I key the radios, any one of them I get a loud buzzzzing noise.

So now wehat???

This sucks.

AP
Click to expand...

rfi and feo problems can be pesky ,
do you have a dvd player , or a vcr?
try putting the tv on a dvd, or closed circuit signal , and see what happens ?
 
I'm going to throw a long shot out here. This happened to me when I grounded my equipment . I was on a second floor. When I took off the grounds it went away . But that wouldn't have anything to do with the HT .
[SIZE=-1]Whenever you make any changes to your antenna or equipment, always do a test and see if there is any TVI.
An antenna which is not matched properly or a poor connection on your coaxial feed, or even moisture in the cable itself can all be a cause of severe RF and TVI interference. A low pass filter will not solve any of these problems, you need to trace the cause and fix it.
With normal operation, it is wise to have a low-pass filter, so as to reduce normal radiation and harmonics from causing problems. A good earthing system is important, and also try using ferrite rings on any badly screened audio lines, such as on processors,phone-lines etc.
High-pass filters are cheap to buy or you can make your own. And it would be wise to give that neighbour a call and put one on his tv. Believe me, having good neighbours is most important to any radio operator!


Here are some tests you can do to find the cause:


1. Check the vswr of your antenna, which should be carried out each time you are about to operate. But watch it! Sometimes the fault
can be intermitting because of a bad connection somewhere on your feedline. Check for corrosion in cable and connections. Fit RF
choke and Low Pass filter.


2. Try using a different power supply, such as a battery. There is always the possibility of RF feedback through the mains power line.
Fit mains RF filter and ferrite rings to power cables. Use High Pass filter on TV receiver.


3. Check all plugs for poor soldering or corrosion and look for moisture in the cable. Water or moisture in coaxial cable is one of the most
common causes of TVI. Your VSWR meter reading might even give you quite a normal reading, so be sure to open up your connecting
plugs and check. Replace coaxial cable and resolder all plugs.

[/SIZE]
Click to expand...
TVI
 
"I'm going to throw a long shot out here. This happened to me when I grounded my equipment . When I took off the grounds it went away . But that wouldn't have anything to do with the HT . "



thats what led me to think it was a mains issue
but im starting to lean towards a crappy rad shack rabbit ears

i can sense his frustration ,

it's gonna be a process of elimination
 
Thanks Ron, just checked all my connections when I put the tower up on friday, all were good and clean, dry and not corroded. I did hook a ground up which I am going out to unhook now after typing this. The coax is pretty new, prob about 8 months to a year.

I hope I get this corrected soon.

AP
 
OK, I unhooked the ground and now I dont get the loud buzz any more, I do hear a slight bit of my voice and a few lines or snow but it does not destroy the tv like it did. It is about the same as when I had the antenna on the washpost without a ground.

The ht still wipes tv out though.

The IC-7000 not barly a thing except a few lines.

What does all this mean? I did a ground like is always talked about and was hoping it will help with quieter rec and less tvi problems.

How do I ground everything now or do I go without?

AP
 
Oh,
I probly should not even come accross the tv at all though, Right?

That must be crapy rabbit ears. I am going to put a outside antenna up soon so maybe it will go away altogether but still, why the ground problem, the antenna should be grounded not? I am very confused now.

AP
 
I use an aluminum groundplane which does not require grounding for operation. Since finding my setup causes interference with a ground I don't use one. I just make sure I disconnect everything during a storm . You also may try making a balun of your coax (feedline) . Make about 6-7 loops about the size of a coffee can and tape it together. Be sure that the loops are side by side not crossed. This helped me with a wire antenna .
 
Sonwatcher said:
I use an aluminum groundplane which does not require grounding for operation. Since finding my setup causes interference with a ground I don't use one. I just make sure I disconnect everything during a storm . You also may try making a balun of your coax (feedline) . Make about 6-7 loops about the size of a coffee can and tape it together. Be sure that the loops are side by side not crossed. This helped me with a wire antenna .
Click to expand...

baluns=good
radio shack crap =bad
cheap taiwanese tv's =bad
 
airplane1 said:
Oh,
I probly should not even come accross the tv at all though, Right?

That must be crapy rabbit ears. I am going to put a outside antenna up soon so maybe it will go away altogether but still, why the ground problem, the antenna should be grounded not? I am very confused now.

AP
Click to expand...

you still have a problem
and as along as you are delving into it, why not solve it completely

what channels does your wife normally watch ?
and how far are you from these stations transmitters?

a home brew folded dipole made out of twin lead might do a lot better
than rabbit ears for vhf tv

and a closed loop might work better for uhf

just depends on your situation
have you made any preparations for the switch to digital ?
a digital converter may also be a Fix!

my 2 cents
 
Try filtering the AC line by the TV as suggested. Try wrapping the coax from the rabbit ears around a big toroid a bunch of times. Is it a specific channel or all of them?
 
moleculo said:
It can't be the coax if just the HT by itself also causes it. BTW, this is off topic slightly but the comment earlier about standing waves causing RFI isn't correct. High SWR does not cause RFI.

Anyway, I can't wait to see what happens when he plugs into a different circuit.
Click to expand...

Right but he says the HT only does it when in the shack which is in the same proximty to the TV as the coax from his radio Which is probably about at the same level as the rabbit ears and tuner in the back of the television set.
 
I know I dont go over the tv when it is turned off.

So far the channel afected that I know of is 27 and 43. The stations are prob. 15 miles closest (15) and more for the others.

I do want the problem fixed. Ron I am running a aluminum maco 5/8 which has a ground plane on it but I thought all instalations needed grounding ?

I will try the sugestions on here like the beads on the cords and all and check asll channels but I still want enlightened on the ground causing the problem or at least making it worse. There is got to be a reason for that and I thought by reading on this forum for years about grounding that it is the right thing to do. So why is grounding it making worse not better?????

I will check all my connections again just to be sure and if I need a balun I am confused again as I thought a maco dont need one of them.

Thanks every one, I will post as I get things done and see whats going on.
AP
 
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