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Grounding problem

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  • Ulf Holt Gmail
    I am living at in a condo with no grounding system. I have found that if I use the rail at the balcony, I have ground, but since the rest of my equipment is
    Message 1 of 4 , Dec 13, 2012
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      I am living at in a condo with no grounding system. I have found that if I use the rail at the balcony, I have ground, but since the rest of my equipment is not grounded, I'm afraid a can brake my SoftRock RX if I use the railing for grounding the shield for my antenna. I can measure 224 volt from one phase to ground and 0 from the other.

      73 de LA2SL

      Ulf
    • Sid Boyce
      Hi Ulf, The voltages are OK for Europe, 224V between Live and Neutral or Ground and 0V between Neutral and Ground. If the railing is not grounded it may be
      Message 2 of 4 , Dec 13, 2012
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        Hi Ulf,
        The voltages are OK for Europe, 224V between Live and Neutral or Ground and 0V between Neutral and Ground.

        If the railing is not grounded it may be acting as a ground radial, e.g if you are on an upper floor where the length of a ground lead buried to a stake outside is a fraction of a wavelength or the heating and the water system is connected using PVC pipes you can run random lengths of wire that are 1/4 length long around the upper floor and attach them to one ground point on the RX.

        If the pipes are all metal you can connect to the heating or water pipes.

        I have used both methods for a TX to get rid of RF feedback into the shack, wires under the carpet and dog legged through the upstairs rooms.

        Using the railing should do no harm but certainly should help.
        The only danger is from a lightning strike which can come through the antenna or the railing. Most hams disconnect and unplug their rigs when there are thunderstorms about.
        73 ... Sid.
         
        On 13/12/12 23:57, Ulf Holt Gmail wrote:
         

        I am living at in a condo with no grounding system. I have found that if I use the rail at the balcony, I have ground, but since the rest of my equipment is not grounded, I'm afraid a can brake my SoftRock RX if I use the railing for grounding the shield for my antenna. I can measure 224 volt from one phase to ground and 0 from the other.

        73 de LA2SL

        Ulf



        -- 
        Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
        Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
        Senior Staff Specialist, Cricket Coach
        Microsoft Windows Free Zone - Linux used for all Computing Tasks
        
      • Ulf Holt Gmail
        The voltage is measured from phase to the railing, which is made of iron and is running along the whole building, passing through the concrete walls and in
        Message 3 of 4 , Dec 13, 2012
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          The voltage is measured from phase to the railing, which is made of iron and is running along the whole building, passing through the concrete walls and in addition reinforced by iron tubes that goes down to the concrete for every 5 meter. I recon this would be an ok source for grounding, since the water pipes are made of plastic (this is from my vacation home in Thailand)

          Ulf

          Den 14. des. 2012 kl. 07:40 skrev Sid Boyce <sboyce@...>:

           

          Hi Ulf,
          The voltages are OK for Europe, 224V between Live and Neutral or Ground and 0V between Neutral and Ground.

          If the railing is not grounded it may be acting as a ground radial, e.g if you are on an upper floor where the length of a ground lead buried to a stake outside is a fraction of a wavelength or the heating and the water system is connected using PVC pipes you can run random lengths of wire that are 1/4 length long around the upper floor and attach them to one ground point on the RX.

          If the pipes are all metal you can connect to the heating or water pipes.

          I have used both methods for a TX to get rid of RF feedback into the shack, wires under the carpet and dog legged through the upstairs rooms.

          Using the railing should do no harm but certainly should help.
          The only danger is from a lightning strike which can come through the antenna or the railing. Most hams disconnect and unplug their rigs when there are thunderstorms about.
          73 ... Sid.
           
          On 13/12/12 23:57, Ulf Holt Gmail wrote:
           

          I am living at in a condo with no grounding system. I have found that if I use the rail at the balcony, I have ground, but since the rest of my equipment is not grounded, I'm afraid a can brake my SoftRock RX if I use the railing for grounding the shield for my antenna. I can measure 224 volt from one phase to ground and 0 from the other.

          73 de LA2SL

          Ulf



          -- 
          Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
          Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
          Senior Staff Specialist, Cricket Coach
          Microsoft Windows Free Zone - Linux used for all Computing Tasks
          

        • Sid Boyce
          It should be good enough for RX and may be even TX. 73 ... Sid. ... -- Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot Emeritus IBM/Amdahl
          Message 4 of 4 , Dec 13, 2012
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            It should be good enough for RX and may be even TX.
            73 ... Sid.

            On 14/12/12 01:11, Ulf Holt Gmail wrote:
             
            The voltage is measured from phase to the railing, which is made of iron and is running along the whole building, passing through the concrete walls and in addition reinforced by iron tubes that goes down to the concrete for every 5 meter. I recon this would be an ok source for grounding, since the water pipes are made of plastic (this is from my vacation home in Thailand)

            Ulf

            Den 14. des. 2012 kl. 07:40 skrev Sid Boyce <sboyce@...>:

             

            Hi Ulf,
            The voltages are OK for Europe, 224V between Live and Neutral or Ground and 0V between Neutral and Ground.

            If the railing is not grounded it may be acting as a ground radial, e.g if you are on an upper floor where the length of a ground lead buried to a stake outside is a fraction of a wavelength or the heating and the water system is connected using PVC pipes you can run random lengths of wire that are 1/4 length long around the upper floor and attach them to one ground point on the RX.

            If the pipes are all metal you can connect to the heating or water pipes.

            I have used both methods for a TX to get rid of RF feedback into the shack, wires under the carpet and dog legged through the upstairs rooms.

            Using the railing should do no harm but certainly should help.
            The only danger is from a lightning strike which can come through the antenna or the railing. Most hams disconnect and unplug their rigs when there are thunderstorms about.
            73 ... Sid.
             
            On 13/12/12 23:57, Ulf Holt Gmail wrote:
             

            I am living at in a condo with no grounding system. I have found that if I use the rail at the balcony, I have ground, but since the rest of my equipment is not grounded, I'm afraid a can brake my SoftRock RX if I use the railing for grounding the shield for my antenna. I can measure 224 volt from one phase to ground and 0 from the other.

            73 de LA2SL

            Ulf



            -- 
            Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
            Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
            Senior Staff Specialist, Cricket Coach
            Microsoft Windows Free Zone - Linux used for all Computing Tasks
            


            -- 
            Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
            Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
            Senior Staff Specialist, Cricket Coach
            Microsoft Windows Free Zone - Linux used for all Computing Tasks
            
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