Mike,
Just continuing to perfect the system. Am about to shield the H field ferrite antennas supplied from Egon, to assess difference in signal "cleanliness" and compare naked to shielded. My question, most if not all use copper foil on the outside of their conduit, can you use a copper tube, with a suitable gap and the ferrite antenna directly inside that copper tube, with then the copper tube inside your conduit?
Jeff
I believe this from a previous Richo answer on shielding, answers my question;
""Solid metallic material near the antenna disturb the magnetic field, so there must be a distance between the antenna and the shield
I use 15-20mm optimally""
So having the ferrite antenna sitting inside the copper tubing would cause this disturbance to the magnetic field. Will wait for the copper foil to arrive next week to shield the H field, it was just that I am up on the roof today adjusting the length of my E field antenna so I was seeing if I could get the 2 mods down today.
Jeff
Just continuing to perfect the system. Am about to shield the H field ferrite antennas supplied from Egon, to assess difference in signal "cleanliness" and compare naked to shielded. My question, most if not all use copper foil on the outside of their conduit, can you use a copper tube, with a suitable gap and the ferrite antenna directly inside that copper tube, with then the copper tube inside your conduit?
Jeff
(2015-01-29, 03:37)orion_jb2001 Wrote: Mike,
Just continuing to perfect the system. Am about to shield the H field ferrite antennas supplied from Egon, to assess difference in signal "cleanliness" and compare naked to shielded. My question, most if not all use copper foil on the outside of their conduit, can you use a copper tube, with a suitable gap and the ferrite antenna directly inside that copper tube, with then the copper tube inside your conduit?
Jeff
I believe this from a previous Richo answer on shielding, answers my question;
""Solid metallic material near the antenna disturb the magnetic field, so there must be a distance between the antenna and the shield
I use 15-20mm optimally""
So having the ferrite antenna sitting inside the copper tubing would cause this disturbance to the magnetic field. Will wait for the copper foil to arrive next week to shield the H field, it was just that I am up on the roof today adjusting the length of my E field antenna so I was seeing if I could get the 2 mods down today.
Jeff
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