> >I have about a 50 foot run from my radio to the outside ground rod. https://www.hamradio.me/installations/installing-ground-rods-the-easy-way.html Tweet. There SHOULD be a coax shield grounding block at ground level BEFORE the arrestor, You'll understand why later in the post. This ground line is not … We will be installing the MFJ-4603 Universal Feedthrough Window Panel once it gets cut and painted in the window just next to the ground rod. Lightening NOT ONLY KILLS radios but can start house fires! HAM RADIO OUTLET HRO-J-1 HRO Bronze Ground Clamp 1/2 in. All equipment grounds should run to a single point, which is then connected to your ground rod. Entered via the ground rod and took out power supplies, confused a JRC NRD-525 receiver and a 144/440 transceiver, and small things to the tune of 4 figures. Electrical Safety 2. > > 50 feet of any wire will not work as an RF ground for anything other > than a quarter wave at 50 feet! Practical, Economical, Good GROUNDing 11/2007 ----- “A good ground is one of the most essential parts of a solid HAM station.” There are various reasons for this statement. Whatever coupling there is from J to mast would setup currents differently depending on mast length and what's at the other end: ground or isolation. Using a watering can, even children can sink an 8 foot ground rod into the ground. These defects can A protruding antenna The soil at his QTH is so rocky that after 2 feet or so, the ground rod hits rock. I expanded use of APCC UPS units to all the small radios, TVs, internet router, and computer things. The two rods in the ground just below the box, are 5 feet each providing an electrical 10 feet of grounding rod. All it takes is water and time. You may then add a coax arrestor at the mast ground rod. Presented is a method learned from other hams on how to install a ground rod with minimal or no hammering. Phoenix, AZ. After antennas, station grounding is probably the most discussed subject in amateur radio and it is also the one replete with the most misconceptions. Lightning Protection. Salem, NH. Plano, TX. Tower Grounding • Bury copper strap in concrete • Bond copper strap to rebar cage • Bond copper strap to tower legs • Bond each tower leg to at least two buried rods spaced radially –Rods at least 8 ft long –Spacing at least equal to their length • Concrete forms Ufer ground Using a watering can, even children can sink an 8 foot ground rod into the ground. This photo shows my single point ground. The articles on this page will help clear up som… Hi all, I'm setting up my station for the first time after a long break from radio. Since well over 90 percent of the effective grounding occurs in the first 5 feet using two 5 foot ground rods instead of a single 10 foot ground rod works much better. The goal of a grounding rod is to make contact with the water table. San Diego, CA. Place rods at a distance from one another by twice the rod’s length. Ground Rod Basics (Service panel) ... • Most ham stationground rod systems will have a lower impedance than the feeble power company ground rod near our service panel. A minimum of 3 ground rods in a triangle are required –one will not do it. Current Stock Status At These Ham Radio Outlet Locations. Now that we are getting settled (well...) in at our new QTH, it's time to start putting up our antennas. This photo shows my work inside the box. Presented is a method learned from other hams on how to install a ground rod with minimal or no hammering. I have an antenna up, but before I transmit, I want to make sure I'm well grounded (RF-wise). The "ground bus" at the back of the radio bench is yet another piece of tubing, with short braided cables soldered to it for attachment to the radios, amplifiers, and antenna "Trans-Match". Woodbridge, VA. HRO-J … So ground to NEC, use good common mode RF chokes on your feedlines and you can also wrap non critical ground wires around ferrite cores to keep wall wart and similar noise from traveling through your ground system. HAM RADIO OUTLET HRO-J-1. All it takes is water and time. I figure that I'm supposed to put in a grounding rod and attach all my equipment to that. This Ask Dave episode focuses on grounding your amateur radio station, a topic of interest to many hams! If a ground wire is run from the second story to earth ground, it needs to be a multiple of 1/2WL but like the 1/4WL counterpoise, it will radiate just like an antenna element. Airspy YouLoop LF/MF/HF Möbius Receive Antenna, Simulating the end-fed half-wave (EFHW) dipole antenna. Bonding All Building Grounds Power CATV Telco Shack Tower R O D R O D R O D R O D … What's the minimum gauge > >wire > >that is acceptable for this connection? Bob heil gives tips on how to properly ground your equipment. Problem. Each has it's own set of requirements, but not all station setups need every kind of ground. Ground Rods… so easy a pre-teen can do it. 6. An elevated antenna or a tower protruding into the atmosphere naturally increases the odds of a lightning … Hardly a day goes by that on some ham radio board or reflector there isn't a question about “station grounding.” Funny part is, the subject's been so discussed, that anyone asking a question must have not been paying attention for the past several (fill in: days, weeks, months, years). Tying the ground system to the utility ground rod is critical. One of the key tenets of grounding your ham radio station is to eliminate ground loops. Stray RF Suppression (or simply RF Grounding) 3. All it takes is water and time. Oakland, CA. 10 gauge solid copper wire is used to ground the antennas. In fact, some setups don't use a ground at all! I am installing a ham radio and want to properly ground it. • Lightning transient on power line will seek out the best ground path • Panel/strap/rod system with no bondingallows the path to go through our ham equipment – this is very dangerous Simplistic Grounding Facts. Falling short of that it is to dissipate as much energy as possible. Use a perimeter ground even if not a complete loop. For now, enjoy the video of the kids learning how to use a 4 pound hammer!Please be sure to LIKE and SHARE our videos and to SUBSCRIBE to our channel! #6 in a series of ham radio videos for beginnersTelescopeMan does a show and tell on his amateur radio station grounding system. IMPORTANT: Effective and safe station grounding is a complex and often controversial subject. The device is intended for long grounding wires. One rod near the tower base and the other rod eight feet away. There are four 4 inch barrel F to F UHF connectors through the side of the box. HRO Discount Price: $12.95 * Buy It *After Coupons & Promotions. In this video, the kids are working together to pound in a ground rod that will be just outside the ham shack. - 1 in. So I went to a local hardware store, and they have a rod --- that's 8 freakin' feet long! First and foremost is for the safety of your family, home, and HAM equipment. • All ground rods • Towers near the ... BE BONDED TOGETHER FOR SAFETY. Those 5 foot rods need to be spaced about 12 feet apart. The real answer, however, is to make the J-Pole directly connect to the mast and provide a means to decouple the RF currents. A collection of several ground rods spaced several feet apart (and tied together) is already installed near where the coax enters the house, with one rod being less than a foot from the entry point. The grounding device utilizes a coaxial line where the ground wire is enclosed by a shield, such as RG-8 transmission line, to prevent the buildup of high voltage standing wave near the station equipment. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. I will have a 20' mast with a long wire antenna running 130+ feet out to the south. The ground rod will be in addition to the buried ground radials for the vertical antenna. Fortunately the 50 and 20 amp Astron power supplies were fine. If one has an artificial ground box and the wire to ground is 1/4WL, neutralizing the reactance will not help as the RF resistance is sky high. It’s not fancy, but it does the job. Use more short rods spaced closer together if long ones are not acceptable. First and foremost, grounding is for the safety of your family, home, and ham equipment. The first thing to know is that there are three functions served by grounding in ham shacks: 1. Antennas, experiments, engineering and other articles of interest to radio folks. He wants to operate HF and has installed a 10-40M Vertical antenna and is now attempting to drive in a ground rod. Milwaukee, WI. Helpful Tip: I use 1/2 inch diameter copper tubing as my ground conductor between rod #1 and the radios. Use 1" or two 5/8" pieces of copper tubing between the first tower rod and the tower. 5. Anaheim, CA. Effects on Signal Reception or TransmissionEven modern RF systems might have installation or design defects. The far end will be about 45 feet above ground level. Coax will run down the mast, across the roof, down the side, and enter the house within inches of ground level. Now that we are getting settled (well...) in at our new QTH, it's time to start putting up our antennas. I will be including a lightning arrester that will also go the the ground. But the radio connected to the floating ground rod is at a different potential and can now have a huge voltage difference from the rest of the house and destroy the radio equipment. As you observed, the mast can have its own grounding rod (which you must also bond to the home's AC service ground rod as referenced in that drawing). My friend is getting back into ham radio after a very long absence. KH6AQ Ham Member QRZ Page Running a grounded antenna in an apartment can turn the apartment AC wiring into the counterpoise with the possibility of much RFI. Portland, OR. Presented is a method learned from other hams on how to install a ground rod with minimal or no hammering. > The last time I checked the minimum wire size for a ground intended to > protect from lightning is #6. A good default would be to ground the mast for safety's sake. This grounding system addresses both the electrical ground and RF grounding requirements in Ham radio. Using a watering can, even children can sink an 8 foot ground rod into the ground. One way around this is to run a counterpoise wire (1/4 wavelength) though the apartment … Ground Rods… so easy a pre-teen can do it. © 2007-2021 John Scott Huggins and other authors and creators, All Rights Reserved. Bonding All Building Grounds BREAKER PANEL HAM SHACK TOWER TELCO CABLE TV COLD WATER GROUND ROD RADIALS Grounding is for SAFETY Lightning protection Blow a breaker if a power system short Connections should be big copper and short . Ground Rods… so easy a pre-teen can do it. For the full episode, visit http://twit.tv/show/ham-nation/134 Atlanta, GA. Denver, CO. New Castle, DE. Lightning not only destroys ham radios, but often starts house fires, thereby jeopardizing the safety of your family. Lightning arrester that will also go the the ground # 6 in a ground at all a! © 2007-2021 John Scott Huggins and other authors and creators, all Rights ham radio grounding rod solid copper wire used... 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