| Author |
Message |
    
Legend
Junior Member
Username: Legend
Post Number: 42
Registered: 12-2002
| | Posted on Monday, April 19, 2004 - 11:35 pm: | 
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I have a grounded 5/8 wave aluminum groundplane antenna that works very well. However I do have problems bleeding all over TV's, telephones, stereo's, ect, when I run anything extra whatsoever.
I recently grounded my radio room with an 8 foot copper-clad ground rod, with only 4 feet of copper tubing between my equipment, and the ground rod, hoping to reduce this RFI problem.
But now, the RFI is worse. When I watch my television in the same room, it is affected much more when I hook the ground up. Same thing with the phone. The interference is much worse with the ground connected.
As I'm sure you can imagine, this is somewhat depressing.
Any suggestions? Anybody else ever experience this? |
Rattlesnakejake
Intermediate Member
Username: Rattlesnakejake
Post Number: 124
Registered: 12-2003
| | Posted on Tuesday, April 20, 2004 - 12:44 am: |
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Have you tried using a tvi or low pass filter? Those help.
73's.
Rattlesnakejake |
Kc0gxz
Advanced Member
Username: Kc0gxz
Post Number: 764
Registered: 3-2003
| | Posted on Tuesday, April 20, 2004 - 5:25 am: |
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Legend
When it comes to grounding, Lon seems to be the grounding guru around here. Just ask his kids.
You definately have some massive RF leakage from somewhere.
Lets start with, what kind of antenna are you using, how high off the ground is the base of it and what are you using for coax AND coax patchcords?
Jeff, kc0gxz. |
Legend
Junior Member
Username: Legend
Post Number: 43
Registered: 12-2002
| | Posted on Tuesday, April 20, 2004 - 8:15 pm: |
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Hi Jeff...
Here's the answer to your questions.
You said:
"Lets start with, what kind of antenna are you using, how high off the ground is the base of it and what are you using for coax AND coax patchcords?"
Antenna: I am using a Sirio 827 5/8 wave aluminum vertical. The one with 8 radials. I recently purchased an I-10K (Jay in the Mohave) antenna, but haven't put it up yet.
Height: It is 36 feet off the ground on a 40 foot telescopic pole attached to the back of my house, on an eve at about 20 feet. It is guyed at two places above that, with rope.
Coax: I am using Belden 8214 97% shielded, foam-insulated RG-8. About 60 feet or less. My SWR is absolutely flat as can be.
Please continue... |
Legend
Junior Member
Username: Legend
Post Number: 44
Registered: 12-2002
| | Posted on Friday, April 23, 2004 - 12:56 am: |
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Lon... Jeff... Anybody...? |
Tech808
Moderator
Username: Tech808
Post Number: 2215
Registered: 8-2002
| | Posted on Friday, April 23, 2004 - 8:59 am: |
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Well,
You did not mention if you had the telescopic pole grounded to a Ground Rod.
If not try That.
Also check to make sure your GROUND to your House power box is Good and there are No Lose Connection's inside of Power / Fuse / Breaker Box.
If you have Not done it yet add a TVI Low Pass filter DIRECTLY to your radio.
Go Outside and use a Moblie setup in a car or truck and run the Coax from your Antenna to a Radio outside and see it you Still have problem's using the Mobile and a different power source.
If this causes no problem's then you have isolated the Problem to your set up inside.
If nothing else Use a Car Battery and Mobile Radio outside with your Coax from your Antenna to check this.
If you still have Problem's then the Problem is With your Antenna and/or Gounding the Antenna Properly.
If it is Grounded well then that leave's the Antenna or Coax or setup inside as the Problem.
Stray RF Problem's can be a nitemare and it is a process of trial and error until you find the problem.
What works well for one person may not work for another as every Station & Setup is different.
If you are using Jumper's inside also check them with an Ohm Meter.
Lon
Tech808
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Tech833
Moderator
Username: Tech833
Post Number: 646
Registered: 8-2002
| | Posted on Friday, April 23, 2004 - 3:35 pm: |
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Sounds like that aluminum antenna has a high impedance connection somewhere in it.
See the subscriber's section and the old article called 'Why aluminum antennas need time to setle' or something like that. |
the old ham (Unregistered Guest)
Unregistered guest
| | Posted on Monday, April 26, 2004 - 5:58 pm: |
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follow the rules and don't run "anything extra" |
Bruce
Senior Member
Username: Bruce
Post Number: 1190
Registered: 9-2003
| | Posted on Monday, April 26, 2004 - 7:15 pm: |
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The Old Ham ........
Thats no fun. |
Allagator
Intermediate Member
Username: Allagator
Post Number: 260
Registered: 9-2002
| | Posted on Monday, April 26, 2004 - 7:56 pm: |
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Legend !!!
I would take the antenna down and clean it up ( the contact places where the tubes slide into one another )then try again !!!!
just my 1/2cent
Allagator (PEN 500 )
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Bullet
Intermediate Member
Username: Bullet
Post Number: 327
Registered: 7-2003
| | Posted on Tuesday, April 27, 2004 - 7:41 pm: |
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old ham guys would never run "illegal equipment".
like a amp running pair of gu 84's thats capable of output in 7-8kw range, in a 1.5 kw pep world.
that never happens....lol |
Legend
Junior Member
Username: Legend
Post Number: 49
Registered: 12-2002
| | Posted on Tuesday, April 27, 2004 - 9:56 pm: |
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Yes... and I'm sure the Old Ham Guy has always paid every penny he dutifully owes on his taxes, and I'm absolutely certain he NEVER does 60 MPH in a 55, even if he is in a major hurry... ect... LOL...
Every single law on the books. The Old Ham Guy rigidly observes ALL of them. All 10 million of them. |
Bruce
Senior Member
Username: Bruce
Post Number: 1193
Registered: 9-2003
| | Posted on Tuesday, April 27, 2004 - 11:08 pm: |
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Legend, Bullet be nice im a old ham too....
Old Ham you know i think we would get along just fine I like the good old days too When AM was king on 75 and even 2 meters ..... lets not forget the novice was only good for one year and NOT renewable. CB'ers were in there place on 23 ch and the FCC inforced the rules. Gosh remember SCR-522's ART-13's ARC-5's and super regin! Lets not forget the sound of the 807 ( tube ) keyed oscilators on 75 and 40 and 15 novice ..... rock bound of course ( Novices were worse than thoes cbers ! ) and HAH and thoes lowley tech class keep them on 6 and 2 and never give them a inch! Yes thinking back more than 40 years to my hailcrafters s-38e wow it was the cats meow .... and i could with 100 foot of wire here guys like you running your KW's talking about if the code ever goes below 13 WPM thoes damn CB'ers would flood on to your 75 meter band noise makers and all.... and lets not forget in the late 50's anouncing hour after hour " NO LIDS NO KIDS NO SPACE KIDETS " BOY all these years have past and guess what 75 meters is STILL THE SAME just go lissen. Gosh i miss the good old days. WOW now there is a proposal to END code !!! .... i'll bet most of thoes SK's from that time are rolling in there graves .... how could ham radio have bent this low ...... yep it could not get much worse ...... what do you think?
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Cm3885
Intermediate Member
Username: Cm3885
Post Number: 378
Registered: 12-2003
| | Posted on Wednesday, April 28, 2004 - 12:48 am: |
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Good grief.........
As Charle Brown was once quoted as saying....
LOL |
