Folks,
I'm scratching my head here and maybe you can help me out.
I noticed today that I dropped by noise by at least S3 on the meter for 80/40meters by disconnecting the other 2 radios (VHF & UHF) that are connected to the same face plate/cover plate on the wall. See the attached picture. Its a stainless cover plate, and I drilled 3 holes and mounted the bulk head connectors to this so I had a clean demarcation point from the outside runs to my inside short connections to my radios.
But what is really strange is that if I disconnected two of my connections and just leave the HF radio connected, I get a drop in my noise by at least 3 s units. Disconnecting the power on the other radios made no change...its just the antennas or probably the coax shields.
Outside the house, each of those bulkhead connectors are bonded to a ground plate with lightening arrestors which is also fed with a #8 ground to a ground rod.
Any thoughts on this?
Should my face plate on the interior wall be a plastic one so that the antenna shields are not bonded among the 3 radios? Any suggestions?
Thanks,
-J
I'm scratching my head here and maybe you can help me out.
I noticed today that I dropped by noise by at least S3 on the meter for 80/40meters by disconnecting the other 2 radios (VHF & UHF) that are connected to the same face plate/cover plate on the wall. See the attached picture. Its a stainless cover plate, and I drilled 3 holes and mounted the bulk head connectors to this so I had a clean demarcation point from the outside runs to my inside short connections to my radios.
But what is really strange is that if I disconnected two of my connections and just leave the HF radio connected, I get a drop in my noise by at least 3 s units. Disconnecting the power on the other radios made no change...its just the antennas or probably the coax shields.
Outside the house, each of those bulkhead connectors are bonded to a ground plate with lightening arrestors which is also fed with a #8 ground to a ground rod.
Any thoughts on this?
Should my face plate on the interior wall be a plastic one so that the antenna shields are not bonded among the 3 radios? Any suggestions?
Thanks,
-J