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Message |
    
Rodder54
Junior Member
Username: Rodder54
Post Number: 44
Registered: 12-2001
| | Posted on Thursday, December 12, 2013 - 10:30 pm: | 
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i just put my antenna back up i am getting 9# noise level.i have a base on a whip and its about 4#, and 3 in the truck. can it be from grow lights across the street and what can i get to help out. |
Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2393
Registered: 7-2004
| | Posted on Monday, December 16, 2013 - 8:18 pm: |
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Just wondering if the signal needle on your radio is working correctly? Can you try another radio?
We have tons of noise here to from electric wires/tranformer and its been like that for years.
But I have also have had interference from a touch lamp, neighbor had drill battery charging which caused interference etc. etc.
Stuff like that can be corrected.
If you have a Walkie Talkie or RF tracking meter you can try and track down noise sources.
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2394
Registered: 7-2004
| | Posted on Monday, December 16, 2013 - 8:41 pm: |
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I have tracked down noise sources using a walkie talkie.
One time I had terrible noise and when I unplugged our touch lamp it quit.
With a Walkie Talkie I tracked down another noise source which was the neighbor charging a drill battery in his garage. The neighbors garage was about 50 yards or so away from my antenna.
Neon signs like stores use can cause interference.
I have found that I could not stop noise sources at my cb radios but had to find the source of the noise and eliminate it in order for the noise to stop.
Years ago when I lived at another house I had a terrible noise at certain times of the day.
I tracked it down using a walkie talkie and found it to be a chiropractor offices equipment.
That office was 3-4 blocks from my antenna.
Good luck & I hope you find it!
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Press_man
Advanced Member
Username: Press_man
Post Number: 729
Registered: 5-2008
| | Posted on Thursday, December 19, 2013 - 7:11 pm: |
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Odd thing about noise, I had a transformer with a bad ground a mile away from me. The power company fixed the problem and things got quiet till a neighbor installed a dog barrier.
73 Pressman
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Press_man
Advanced Member
Username: Press_man
Post Number: 730
Registered: 5-2008
| | Posted on Friday, December 20, 2013 - 6:52 pm: |
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Meant to add this in the last posting, get a GOOD line filter, Tripp Lite makes a good one. Copper may be able to get them. You want one big enough to handle say a 40-50 amp supply or radio. It'll help with noise coming in and going out.
Get one or more of the books published by the ARRL and FCC about noise and what to do. The FCC most likely will still send you one for free.
Remember too, there is NO 100% ground. Check all connections for hot or ground, make sure you have no loop connections, check florescent lights in the home. Touch lamps are bad about noise. If noise goes away in the rain, there's likely a bad ground connection on a power pole or street light.
Plasma TVs can get you from houses away, heaven forbid you wear a hearing aid around one.
Be safe! Gotta go! Had my nose septum worked on Tuesday and Thursday. Pain!
73 Pressman
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Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2396
Registered: 7-2004
| | Posted on Friday, December 20, 2013 - 9:35 pm: |
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My noise goes away while raining and
I have called the power company more than a few times over the years but they never did anything here to help with the noise. But it doesn't hurt to try and contact your power company as they may be willing to help out such as in Pressmans case.
Line filter did not help here but each situation is different so who knows?...
I have the ARRL Handbooks as Pressman mentions and they have been very helpful to me.
Good luck!
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Rodder54
Junior Member
Username: Rodder54
Post Number: 46
Registered: 12-2001
| | Posted on Thursday, January 23, 2014 - 10:03 am: |
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when i put my antenna back up is when i first got it.i didnt have it 3 months ago.this guys big shop wasnt built yet too, and i put another new antenna up and still have it. i put it 30 feet from the one up high, and i have two radios on base , i went out in my truck i have 3# noise level i drove down the street turned right it went away turned around and found the strongest signal in front of a house that by chance he has a grow shop in town and might be doing it at home too. i called the power co, to have them check transformer they said it would show up but that house has a lot of power draw around 3pm sundays its quiet after then 5pm its back it might be quiet at night but i dont get up to see, i put a filter on and it helps but i cant hear from town ten miles away also i get it from 26mhz to 29 ,30 and above is quiet so i am thinking its grow lights,if i can get him to change his timers.thanks |
Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2415
Registered: 7-2004
| | Posted on Wednesday, January 29, 2014 - 7:28 pm: |
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I just recently purchased a Tripp Lite 8 outlet ISOBAR line filter. I plugged my Ranger 2995 into it but it did not help with my incoming interference noise.
(That's just my situation though)
But from expermenting I discovered a couple of things...
We have a touch lamp that causes interference to my cb radio. I plugged the touch lamp into the Tripp lite line filter and interference stopped!
Our microwave when running also caused interference to my cb radio.
I plugged microwave into Tripp Lite line filter and interference stopped!
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Tech237
Moderator
Username: Tech237
Post Number: 1730
Registered: 4-2004
| | Posted on Friday, January 31, 2014 - 9:53 am: |
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Sometimes, you have to use filtering at both ends to resolve issues. I have an article on interference I wrote for my last job, I'll see if I can find it, type it back into this computer and post it. May take me a while, lot of stuff still in boxes after moving.
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2417
Registered: 7-2004
| | Posted on Friday, January 31, 2014 - 7:31 pm: |
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That would be cool Tech 237! Thanks!
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Rodder54
Junior Member
Username: Rodder54
Post Number: 47
Registered: 12-2001
| | Posted on Saturday, February 01, 2014 - 9:38 pm: |
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if i could get the guy thats causing the interference to let me plug a filter that would be great. at least it stops some times i know which house it is now thanks for all the help |
Tech237
Moderator
Username: Tech237
Post Number: 1734
Registered: 4-2004
| | Posted on Sunday, February 02, 2014 - 1:27 pm: |
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Rodder - mention a few things things
1) it might be causing interference to Emergency Services.(True it might be)
2) if the FCC track it to his home they can fine him thousands of dollars.(True - they can if it causing interference to ANY service)
3) An inexpensive filter could reduce both risks.
No guarantees, but it might help
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Dale
Senior Member
Username: Dale
Post Number: 2022
Registered: 12-2002
| | Posted on Wednesday, February 05, 2014 - 5:55 pm: |
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road warrior , where did u get that tripp lite
isobar line filter?? my direct tv box /converter
box causes tons of noise in my recieve . s7-s9
TECH 237 would rfi choke wraps around the power cord help with this.if i unplug them noise is gone
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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Tech237
Moderator
Username: Tech237
Post Number: 1736
Registered: 4-2004
| | Posted on Thursday, February 06, 2014 - 1:23 pm: |
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Chokes might help depending on the type of noise - is it RADIATED to the power line or direct connection. The best answer is try it and see.
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Dale
Senior Member
Username: Dale
Post Number: 2023
Registered: 12-2002
| | Posted on Thursday, February 06, 2014 - 5:29 pm: |
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thank you tech 237. i dont quite understand
your question about radiated powerline or
direct connection????the power cords to the
coverter box and sat. box both on a 3 prong
grounded multi stip by hp. i tried using the 3 prong plugs in house and i think the noise came up
maybeeven slightly more.i wont say any names but
i saw some well known name brand chokes in a ham catalog
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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Charliebrown
Intermediate Member
Username: Charliebrown
Post Number: 300
Registered: 10-2002
| | Posted on Thursday, February 06, 2014 - 7:55 pm: |
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Try to use a individual ground to an independent ground rod for your radio, antenna and any other communication. where I have to run a long ground cable for my connection I use the center wire of the rg-213 but, leave the shield on the coax so the cable will not act as an antenna due to any stray rf. Do not connect the shield to the ground. Just the center wire. Also by leaving the shield on the cable it will help shield any interference from being picked up through the grounding cable. |
Tech237
Moderator
Username: Tech237
Post Number: 1738
Registered: 4-2004
| | Posted on Friday, February 07, 2014 - 1:00 pm: |
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RFI can end up in power cables by the cable either being directly connected to the source (such as noise travelling along mains power lines or alternator whine in a car), or by it being transmitted like a radio signal, such as spark plug noise.
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Dale
Senior Member
Username: Dale
Post Number: 2025
Registered: 12-2002
| | Posted on Saturday, February 08, 2014 - 11:07 am: |
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ok i understand now ..lol. im not sure
how to stop it as no matter where i plug it in
the noise is still there. even tried different
mulyi plugs. think im gonna try the rf chokes
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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Charliebrown
Intermediate Member
Username: Charliebrown
Post Number: 301
Registered: 10-2002
| | Posted on Monday, February 10, 2014 - 7:44 am: |
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How is your SWR? How is your connection's? You can also put a shield over your power cable on both positive and negative cable. Make sure your body of the car or truck has a really good ground connection to the frame. This will include the hood , door's, lid's or even tail gate's. Remember with any shield do not let it connect at either end to the center cable. Alway's seal each end of the cable when a shield is involved. Choke's are good so is ceramic disk capacitor and electrolytic capacitor for filter's. The electrolytic cap's can also help provide a more stable voltage for your radio's. It will help stop any spike's or surges.If you use a ham antenna tuner ( I am talking high quality ) it will help filter some noise on the antenna side of the radio. Once every six month's always check you cable's and connection's. This is what I have done to help with my noise. It will not take care of everything but, it will help somewhat. Last but not least you can purchase for about $200.00 a B.H.I. FILTER. You can install this inside your radio or buy it as an external speaker to take from radio to radio. This is the best filter for the audio side of the noise I have ever seen and it does not cut your receive any for it is on the audio side. |
Tech237
Moderator
Username: Tech237
Post Number: 1742
Registered: 4-2004
| | Posted on Wednesday, February 12, 2014 - 12:12 pm: |
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The article on RFI is posted under Subscription/Articles
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Dale
Senior Member
Username: Dale
Post Number: 2026
Registered: 12-2002
| | Posted on Wednesday, February 12, 2014 - 4:34 pm: |
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thanks tech 237
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
|
Charliebrown
Intermediate Member
Username: Charliebrown
Post Number: 303
Registered: 10-2002
| | Posted on Wednesday, February 12, 2014 - 11:20 pm: |
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If none of the above or in any of the article's seem to help you enough then look up the information on the B.H.I. filter. They have a video on the performance. You can also see a video on u-tube. Remember the B.H.I. is a dsp audio filter that goes in the audio circuit or as an external speaker. |
Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2422
Registered: 7-2004
| | Posted on Friday, February 14, 2014 - 10:07 pm: |
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Dale we have a direct TV box but it does not cause interference to my radio like yours does.
I got the tripp lite off a online website.
Hope you get your problem figured out Dale!
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Dale
Senior Member
Username: Dale
Post Number: 2033
Registered: 12-2002
| | Posted on Sunday, February 16, 2014 - 5:41 pm: |
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RW theres 2 parts to our d tv system
the box [lights up blue ] and then theres a
small black box labeled ac power supply
this little box is where my headaches are.
right now time has been limited but i did make
a rf choke with the extra coax which DID help
but there was only enough for 2 wraps 8 inches round. wrapped with black tape and ties
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
|
Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2424
Registered: 7-2004
| | Posted on Tuesday, February 18, 2014 - 4:25 pm: |
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We also have the two boxes for Direct TV...
Maybe I should check again as some of my noise
could be coming from that little box...
I'll check and let you know for sure...
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Road_warrior
Senior Member
Username: Road_warrior
Post Number: 2425
Registered: 7-2004
| | Posted on Wednesday, February 19, 2014 - 3:10 pm: |
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Hi Dale,
Nope neither Direct TV box is causing any trouble here as I checked it out today...
Hope you get it figured out Dale!
Road Warrior / CEF 375
Tyrone, PA (Jim)
Local ch. 27.505 Am or LSB
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Dale
Senior Member
Username: Dale
Post Number: 2035
Registered: 12-2002
| | Posted on Thursday, February 20, 2014 - 5:30 pm: |
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yup its my little square black box. not the big
square one. my sanyo flatscreen tv also puts a tiny bit of noise in my recieve but nothing to
im gonna worry about. the choke i made outta the extra cable helped a little.i was looking at
surge protectors last nite at walmart they had
a G.E. model that claimed rfi and emi elimination
wonder if it would help.noise now only blocks out
signals out about 60 miles away or more.dx seems fine though
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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