how long should an hf radio grounding rod be

Peak gain or maximum gain is another common performance indicator. 353, which translates to 35.3% radiation efficiency.Īlso displayed is -4.52 dB, which is the total power loss of the entireĪverage gain is also an indicator of improper modeling if average gain exceeds 1.00, or is In this case, using a 3D plot, we see AverageĪverage gain is. Model and Measurement AnomaliesĪverage gain can be a useful tool in EZNEC, as can maximum or peak gain. The word has been commonly used, we see general use and dictionaryĭefinition agrees. Here is the definition of 'counterpoise' appearing in the Communications StandardĬounterpoise is a c onductor or system of conductors usedĪn earth or ground substitute in antenna systems. Counterpoise, in popular Ham radio conversation, has alwaysĭescribed a conductor or group of conductors serving as an RF ground.ĭictionaries. Hardly fits a group of parallel wires with no real connection to the antenna'sįeed terminal. A grid of conductors parallel to a dipole, laid on earth or suspended aboveĮarth, is often referred to as a counterpoise. House, the common suggestion was to 'use a counterpoise wire'. Get a good earth ground, perhaps because they were on the second floor of a 'Counterpoise' has been used by radio amateurs since the veryīeginning of our hobby. Does it matter where on the mast I connect the ground wire? Does it matter if the connection point to the mast is closer to the bottom (near the roof) or closer to the top (near the antenna connection point)?(2) Should the coax between the VHF/UHF antenna and my radio have a lightning arrester in it somewhere? If so, does it matter where in the line it is?(3) Do I need to separately connect the shield of the coax coming from the VHF/UHF antenna to the ground rod? If so, can it be connected to the household electrical ground rod or do I need to add another rod and then bind it to the existing one?(4) Should there be a separate ground wire running from one of the ground rods into my radio room and then connecting to my radio equipment in the room?(5) I'd like to make some type of a window/coax feed-through.Counterpoise Systems

It is not grounded in any way.There is a window in the computer/radio room and it is almost directly above the electrical grounding rod for the house.My first round of questions are as follows:(1) I'm sure that I should ground the mast that my new VHF/UHF antenna will be mounted on.

It is unremarkable and lacking in performance. In case it matters, I currently have a G5RV Jr (obviously not for VHF/UHF) running from my house to a pole in the backyard.

How long should an hf radio grounding rod be