Copper Talk » Open Forum » Archived Messages » 2004 » 03/01/2004 to 03/31/2004 » Tvi filter « Previous Next »

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PAUL
Posted on Wednesday, December 17, 2003 - 8:27 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

what is a good tvi filter
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Crafter
Posted on Wednesday, December 17, 2003 - 9:23 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Lowpass filter or highpass filter?
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PAUL
Posted on Wednesday, December 17, 2003 - 9:42 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

high pass
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Bruce
Posted on Wednesday, December 17, 2003 - 10:03 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

high pass goes on the tv set
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PAUL
Posted on Wednesday, December 17, 2003 - 10:40 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

iam looking for filter that for the a cb
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Xlaxx
Posted on Wednesday, December 17, 2003 - 11:07 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Are the high pass filters from Rat shack any good for upset neighbors? Would like to offer my neighbors something.
Thanks

XLAXX
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Crafter
Posted on Thursday, December 18, 2003 - 11:51 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Worked in my case those arnt to bad for radio shack, Paul what you want is a low pass filter bencher ya1 is a good one. I've used the johnson the drake and bencher with same results. A good one is not cheap though.
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Bruce
Posted on Thursday, December 18, 2003 - 10:43 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

OK LOW PASS GOES ON CB SET High pass on tv set so if you are going to filter a neighbors tv you want high pass ON THE TV if its comming through a stero or cordless phone you need to use beeds on all speaker or phone line leads.......
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Kb5lpa
Posted on Thursday, December 18, 2003 - 1:48 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Ground your cb. Use a low pass filter between the radio and the antenna lead. Use a high pass filter on the tv. Use a high grade,low loss coax on the radio. Check your coax connections. Replace any old connectors.Get as many toroid chokes as necessary to cut out the interference on the telephone. No poor quality amps either.Keep it legal. Did I mention ground the radio properly???

73 de KB5LPA
P.S. Each case of TVI is unique and has it's own unique cure. Good luck.
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Crafter
Posted on Thursday, December 18, 2003 - 6:35 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Well said LPA.
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hawk1..
Posted on Monday, December 22, 2003 - 4:43 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

mfj mahes a fairly cheap one that works for me ,and my nieghbor..hk
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Bigbob
Posted on Monday, December 22, 2003 - 7:30 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

KUDOS to mfj I got one they're very good units.
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Ca346
Posted on Monday, December 22, 2003 - 10:56 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I have a Vectronics 1500W model for the set-up in the house through the COPPER KL-500 and a COPPER 1000W model for the set-up in the garage/shop through the Galaxy 350. Both work well. The COPPER TVI cost $23; the other one was $70. Should have got two COPPER TVI's...

"http://www.copperelectronics.com/cgi-bin/checkitout/checkitout.cgi?catalogSTORE:CKIE:prodV10-05780+"
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mikefromms
Posted on Tuesday, December 23, 2003 - 9:42 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Should the tvi filter be connected right at the radio or can it come after the switch box? Still learning--duh...

mikefromms
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Tech808
Posted on Tuesday, December 23, 2003 - 10:21 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Mike,

I have all of my MTI - TVI Filter's connected directly to the Transmitter's via a Double Male Connector (SEE LINK BELOW) then Coax Connected to it going to switch box.

http://www.copperelectronics.com/cgi-bin/checkitout/checkitout.cgi?catalogSTORE:CKIE:prodC70-05012+

Or Mount as close to Transmitter as Possible.

Hope this Help's.

Lon
Tech808
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mikefromms
Posted on Tuesday, December 23, 2003 - 10:36 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks for the good information. I just keep learing. I'm not having a major problem or anything but you know how it is--I never know when I'm going to get the bug to buy another anplifier. This time it will be tube.

BTW, I really found what I was looking for in a radio and antenna system with the DX2517 and Thunder 8xb. High quality and fun to operate.

Thanks for all the advise.

mikefromms
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JR
Posted on Tuesday, December 23, 2003 - 4:51 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I LIKE TO RUN TUBE AMPLIFIER OUT OF THE HOUE d&A PHANTOM 1500 WATT WITH NO PROBLEM I HAVE A GOLDLINE FILTER IT ADJUSTABLE
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chris workman
Posted on Thursday, January 29, 2004 - 9:57 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I've read & appreciate all the post on here but I've tried almost everything yall have mentioned.My situation is some mystery to me I've got about every filter known to man & I'm grounded good.I have no t.v.i barefooted but when I turn the juice on I come through my tv & my phone not to mention dimming the street lights outside my house. I can also key up in my mobile (amp in line)outside a couple of blocks away & it comes through my tv also.I'm to my witts end here
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Ca346
Posted on Thursday, January 29, 2004 - 11:00 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Sounds like you need to post a question in the ASK the TECH section. Join the Forum and become a member. It's Free. How many watts are you running?
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Lowpowerhal
Posted on Friday, January 30, 2004 - 9:05 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I run a B&W filter.Barker Williamson low pass model 425 in line. Best filter they made. This is a low pass filter. You have some stray rf some where! Bad ground maybe? And check your coax it dose go bad , also the jumpers. Also some amps are dirty as far as no filtering.Most of the time its a grounding problem.Hope this helps. Good luck
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Ironmask
Posted on Saturday, January 31, 2004 - 8:33 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Just my1 1/2 cents.

If the TVI Low pass filter isn't grounded to the shack ground buss it can't do it's job. As said before connect filter directly to radio run good jumper [shielding] to amp and another filter directly to amp.
I use a Balum between last item in line and the antenna.
Hope this helps.
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Pp1616
Junior Member
Username: Pp1616

Post Number: 39
Registered: 2-2004
Posted on Friday, March 05, 2004 - 4:46 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

if runing a kicker where should u place the tvi filter on the radio before the kicker or after the kicker??? just woundering
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Pp1616
Junior Member
Username: Pp1616

Post Number: 40
Registered: 2-2004
Posted on Friday, March 05, 2004 - 5:12 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

ok thought so thats how i have it now thanks for the quick reply i always seem to be on when u are tech808 =)
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Parts_man
New member
Username: Parts_man

Post Number: 4
Registered: 2-2004
Posted on Friday, March 05, 2004 - 8:39 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

cris workman,
I have been talking with salesman at Palomar-engineers.com. I purchased quite a few split- bead Ferrites. They come in different sizes for coax. After receiving them I placed 4 of them at the coax end just below my antenna. He said this would stop downward radiation of RF which creates tvi. You know he was right. I was tearing my neighbor up before putting these on and now she watches CSI in peace. Worked for me, you might try it.
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Crafter
Advanced Member
Username: Crafter

Post Number: 956
Registered: 12-2002
Posted on Friday, March 05, 2004 - 9:09 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

You used to be able to purchase them at radio shack not sure about now though. I have my own stash from robbing old transmitter radio stations.
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Parts_man
New member
Username: Parts_man

Post Number: 5
Registered: 2-2004
Posted on Friday, March 05, 2004 - 11:06 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Palomar:
phone, 760-747-3343 call and he will help with what to do for different problems.
e-mail, Info@palomar-engineers.com
address, www.palomar-engineers.com
They are on the west coast so allow for time differance. Catalogs are also available, but if your coax has a connector on it you will need split bead. The split bead can also be used on power cords close to inlet into an am/fm radio or t.v.. They are sized in 1/4"-1/2"-6/10"-or 3/4" for your cable.
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Ca346
Advanced Member
Username: Ca346

Post Number: 621
Registered: 8-2003
Posted on Friday, March 05, 2004 - 11:13 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Look @ www.surplussales.com for split beads.

They are about $2.50 each for the ones 1/4" and 3/8".
The 1/2" ones are $6.50
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Ironmask
Intermediate Member
Username: Ironmask

Post Number: 197
Registered: 2-2002
Posted on Saturday, March 06, 2004 - 12:17 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

To All,

I feel a correction of mis understanding is in line.
When I said TVI filter to Amp I was refering to the output side between Amp and antenna coax. Thus, that would place it last in the RF line.
My reasons for connecting directly to the Amp via a double male is the reduction of the need for a jumper and thus reducing the possible jumper causing problems.
Hope I have made myself clear this time.
Iron Mask CEF 100