1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice

Friend interfering with neighbor on 10M

Discussion in 'General Ham Radio Discussion' started by KD2GOE, Oct 5, 2018.

  1. KD2GOE

    KD2GOE W9WDX Amateur Radio Club Member

    Joined:
    May 30, 2013
    Messages:
    850
    Likes Received:
    131
    ok ill try to give as much info as i can but i am wondering if he can just tell the neighbor to suck it?

    He is running a butternut HF6v and on 10 meters and he is messing up his neighbor TV or Cable box. now he has offered him a power line filter and some clamp on filters but the neighbor refuses to use them.
    I went over and looked at all his stuff and it is grounded he tried a coil of Coax and i gave him a 1:1 common mode filter thing i made per TRX Bench on YouTube i use it on my 40m center dipole when i am camping.
    nothing is working..
    the Radio is an Yaesu FT-950


     
    #1 KD2GOE, Oct 5, 2018
    Last edited: Oct 6, 2018

  2. Blackcat630

    Blackcat630 Sr. Member

    Joined:
    Apr 2, 2013
    Messages:
    441
    Likes Received:
    300
    A good low pass filter for your friend. If you can convince the dick neighbor...high pass filter on his cable line.. good luck. This solved my problems years ago with my previous neighbor.
     
    L2 likes this.
  3. BJ radionut

    BJ radionut Supporting Member and 6m addict

    Joined:
    May 9, 2008
    Messages:
    1,773
    Likes Received:
    914
    Interference caused by insufficiencies in consumer equipment

    In some cases, however, RFI is caused by the fact that most consumer equipment lacks the necessary filtering and sheildng to allow it to work well near a radio transmitter. The FCC does not regulate the immunity of equipment, however, so when interference is caused by consumer-equipment fundamental overload, there is no FCC rules violation, and licensed stations have no regulatory responsibility to correct interference that may result. (Hams may want to help find a solution to be neighborly, but this is not a requirement in the rules.)

    http://www.arrl.org/files/file/Technology/RFI Main Page/Hallas.pdf

    http://www.arrl.org/cable-television-interference

    The transmitter operator is responsible for the proper operation of the radio station. If the transmitting equipment is emitting out-of-band signals, the operator must take the necessary steps to ensure that the station is in compliance with FCC regulations.

    Highly possible ....using a multi-band vertical that even small compliant spurs from the transmitter are being radiated...Low pass filter most certainly should be applied.
    GL
    All the Best
    Gary

    ATT-U VERSE...???
    VDSL utilizing 1.1 - 12 MHz over twisted pair

    VDSL2 utilizing 1.1 - 17.66 MHz over twisted pair
    VDSL2+ utilizing 1.1 - 30 MHz over twisted pair

    None of these appear to have much ability to reject ingress from RF or random electrical noise. Their current solution appears to be to deploy new STB's that will buffer several minutes of programming to allow time for re-transmission of packets to correct errors in the video downstream. They are also diddling with using shielded CAT5 instead of twisted pair, but as far as individual subscribers living next to a ham radio operator, they currently don't seem to have much to offer at this time.

    Hopefully not...
     
  4. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

    Joined:
    May 1, 2013
    Messages:
    2,684
    Likes Received:
    1,607
    I had problems with my neighbors television picking me up on 10 meters(Yaesu FT890) and on CB as well.(A stock Cobra 148) I already had the low pass filters on my equipment and all of my equipment was bone stock and aligned and checked with a calibrated spectrum analyzer. All better than specifications required, considerably better. When I got the chance to look at his set up I was surprised at the age of his television. Late 1970's televisions that were in pretty poor condition gave me no real chance in fixing the problem. I told them I'll be right back, I went to a local electronics store and bought two flat screen televisions. They resisted insisting they did not need my charity. I told them this was the only way for me to fix their problem. They had an off air antenna not even 30' from my Sirio M400. I moved to off air antenna it to the other side of their house and grounded the coax shield. Not a single complaint since then. Now my neighbor thinks I am rich and a "Electronics Wizard!" Check the neighbors gear and see if it is worth fixing or replacement be the better option.
    These neighbor's are the wife's friends other wise I would have told them to deal with it on their own since I guarantee I am in compliance with the laws and specifications.
    Also my wife asked nicely.
    We sat the TV's out on the curb and not one person stopped to look at them.
     
    #4 Tallman, Oct 6, 2018
    Last edited: Oct 6, 2018
    sunbulls, fogdog, 357magnum and 3 others like this.
  5. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

    Joined:
    May 1, 2013
    Messages:
    2,684
    Likes Received:
    1,607
    If the equipment is approved under PART 15 it will state right on the label they must accept unintentional interference...
     
  6. loosecannon

    loosecannon Sr. Member

    Joined:
    Mar 9, 2006
    Messages:
    3,051
    Likes Received:
    1,304
    while the FCC will side with the ham operator, that's not going to do anything for neighborly relations.

    it sounds like the neighbor feels that they are in the right, and they shouldn't have to go to any effort to improve their own situation. that is their prerogative.

    the solution could lie with the cable company itself. If the ham could get the neighbor to agree to have someone from the cable company come out to look at it, the ham can have a conversation with the cable tech and offer the simplest and cheapest solution to cable TV interference.

    what is that solution? well the cable tech probably has the parts for it in their truck by the hundreds.

    these are shorting caps for F connectors:
    [​IMG]

    put these on any unused cable outlet in the house, and on any unused splitter outputs.
    then go around the house an tighten all the connections just to be sure.

    most times when someone is interfering with a neighbor's cable TV, it's not harmonic interference so the low pass filter shouldn't be the first go-to.
    it's usually straight up overload because one or more cables in their system are acting like antennas because they are not properly terminated.

    the cable installers by and large don't know what these are for, or when to use them, but once you show them a picture of one, they will say, "oh yeah, i have a bunch of those in the truck."

    let the cable tech go do this work at your neighbor's house, and it should clear up the problem. if it doesn't, the problem is still most likely with the cables themselves and there is probably a badly shielded cable or a badly connected shield on a connector somewhere.

    other than that, the next step is to move your antenna to the furthest point from that house you can, and hope the neighbor on the other side is nicer.

    good luck.
    LC
     
  7. Captain Kilowatt

    Captain Kilowatt Professional Amateur
    Staff Member

    Joined:
    Apr 6, 2005
    Messages:
    15,011
    Likes Received:
    6,596
    And to continue that quote:.....including interference that may result in undesirable operation". In short, as long as the transmitter is operating within the law the onus of responsibility to resolve the issue is with the person receiving the interference.
     
    Tallman likes this.
  8. KD2GOE

    KD2GOE W9WDX Amateur Radio Club Member

    Joined:
    May 30, 2013
    Messages:
    850
    Likes Received:
    131
    the cable company has been over there to "fix it" but they are clueless. from what i am seeing his neighbor is a dick he has no clue what radio is and just calls his stuff a CB...
    his antenna is as far away from the guys house as it can be.. My friend over here is 65 and just wants to enjoy his radio.

    and it don't help at all that the new Box's cable/Dish company's are giving out are no longer made in a mettle there all plastic now..
     
  9. undertaker

    undertaker Undertaker

    Joined:
    Apr 5, 2006
    Messages:
    1,825
    Likes Received:
    658
    Dish is your friend...........................(y)(y)(y)(y)(y)(y)
     
  10. jon666

    jon666 Sr. Member

    Joined:
    Jan 24, 2006
    Messages:
    1,445
    Likes Received:
    559
    my radios say fcc approved. anyone complains i
    tell them to go pound salt
     
    KD2GOE likes this.
  11. 543_Dallas

    543_Dallas Sr. Member

    Joined:
    Jul 25, 2011
    Messages:
    1,642
    Likes Received:
    1,647
    It's risky trying to install filters for neighbors. If this guy is a jerk he won't think twice about blaming the filters if his television goes out.

    You say its grounded but does your friend have ground radials on the vertical? If not he should install some. Even if they don't solve the neighbor problem he can improve the efficiency. Maybe not on 10m but the lower frequencies for sure.

    As long as he is operating his station 100% legally and has the antenna installed properly it's not his problem.
     
    Blackcat630 and Captain Kilowatt like this.
  12. Mudfoot

    Mudfoot Sr. Member

    Joined:
    Jun 17, 2009
    Messages:
    8,443
    Likes Received:
    2,754
    Only if it's installed correctly.
     
  13. nomadradio

    nomadradio Analog Retentive

    Joined:
    Apr 3, 2005
    Messages:
    1,869
    Likes Received:
    1,293
    An incredibly high percentage of trouble we used to see in the old analog cable-TV days was from poorly crimped, worn-out or weathered "F" connectors.

    The threaded plug like the one in the pic above has a crimped connection to the coax shield. Any resistance that forms between the body of the plug and the aluminum shield of the coax causes nearby signals to be picked up.

    The coax shield should reject that stuff, but only if it's grounded to the body of every connector between the TV and the pole.

    Every one.

    Only takes one bad crimp to turn the outside surface of the TV coax into a very long receiving antenna.

    The cable-guy term for this problem back in the day is "ingress", meaning that an outside signal has leaked into the cable-TV coax.

    Every case of this that we solved began with finding out where the RF was getting in.

    Can't easily plug the leak until you know where it is.

    73
     
  14. sunbulls

    sunbulls Well-Known Member

    Joined:
    Apr 25, 2017
    Messages:
    183
    Likes Received:
    209
    About the only thing those 70’s TV’s are good for is the 3.579 MHz Colorburst Crystal for use in an 80 meter QRP rig and possibly the speaker. 50’s and 60’s TV’s are much better. The wood cabinets easily convert into liquor bars and fish aquariums.
     
    KD2GOE and Shadetree Mechanic like this.
  15. KD2GOE

    KD2GOE W9WDX Amateur Radio Club Member

    Joined:
    May 30, 2013
    Messages:
    850
    Likes Received:
    131

    Yes he has like 10 ground radials running under the grass.
     

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!