You can also purchase larger ferrite cores and wind a few feet of your rotator cable through it like a toroid.
You will undoubtedly have to use multiple ferrite cores for your rotator cable. You can also repeat this where the coax comes into your station via the window. You can also use ferrite cores-it usually takes quite a number of them. One easy way is to roll up 10 to 20 feet of coax and tape it with electrical tape, which creates a form of a choke balun and helps keep the RF off the outside of the cable. You can reduce this in many ways (see the ARRL Handbook). This may be what is happening in your case. If, however, there is a mismatch at the antenna, part of the reflected power can come back down on the outside of the cable. The idea is to keep the RF inside the cable. I am assuming you use coaxial cable between your station and the antenna.
This turns that section of your ground system into an antenna! A ground loop exists when current flows between your devices by way of the grounding wire but never quite finds the ground rod. The reason for the single point ground is to avoid creating ground loops. That’s probably overkill, but then I don’t like RF in the shack any more than you do! Then the pipe is connected via #2 wire to my ground rod. Note I emphasize “single point.” I use a short section of copper plumbing pipe. I use an 8-foot ground rod in fairly dry soil. From that point, the ground wire goes out to your ground rod. All the components in your station, such as transceiver, power supply, SWR meter, and antenna tuner and, in your case, the rotor control box, should be grounded to a single point. It is the station that needs to be grounded, not the antenna. If I read you correctly, your station is on the 1st floor, and therefore not unworkably far from ground. I’ve worked hard in my shack to keep the RF away and have been mostly successful, although on 80 meters I have to shut off the computer speakers because they buzz loudly. This can cause all sorts of problems, such as RFI (radio frequency interference) and can even cause the rig itself to misbehave. The problem is that RF energy is traveling from your transmitter, going to the antenna, and then returning into your station. It’s not grounding, although grounding may be part of the solution.
Thank you for read my lines and I hope this dont be a problem for you.ħ3s and happy new year (just a bit late 🙂 hi hi)īilly, first, I sympathize with your problem – it’s no fun having RF energy in the ham shack. Im sorry for very long messege but I wanna be clear for you have better idea my case and maybe you have one good option for my specific problem.
So, my question is there any possible solution in my case? all pictures and videos of hams use towers setup directly on the soil so easy to run a grounding sistem but in my case my antenna is on a tube pipe at about 30ft high thats mean long wire come down for ground 🙁 again for testings controls I take off all my shack and just I have my radio and swith antennas both of them is grounded in my case I used 6 ft rod cooper and #8 wire and then for my radio #12 wire for sigle point but my problem is the antenna, as I read several notes from hams the wire or conductor we use for ground not be so long because can turn it in antenna and in anothers words more problems for me. another thing is my rotor line when I connect and come inside of my apartament come with a lot RF I use a field strength meter so as you can get idea all cables,metals or devices get RFI ofcourse power wire lines in the while building so, for my testings remove my 10m 4 elemts antenna,3 elemts 5 band antenna and only I setup one small 3 elemets 10m yagi for have easy testings, the RFI come down when I put down the swr but still need more. I have RFI to the neightbors and I did few tests one of my problems is the antenna no have ground and is just 6-7 ft up from the roof. So, really i’m new ham and always need help 🙂 In this case searching for help videos I find out one of yours videos talking about “ground” so, my question is any idea how I can ground my antenna that its place on the top building roof (3 floors) and I live in the 1th floor. My name is Billy my call few years ago I get my ham call so was a very happy day for me when I passed my 1th exam and then 2-3 moths more got my general class. Please keep in mind that English is not Billy’s first language, so please read past the minor grammar issues and look at the difficulties he’s having. Since it’s a common problem, I thought I’d address it here. I received the following query via YouTube.
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