I'm not suggesting that equipment grounding is wrong, just that it's usually unnecessary - and if you find it to be necessary, you've got other problems that can be fixed in other ways. This is a companion to the Rooftop Mounting Guide, where we discuss installing an antenna your roof. lightning protection 2.pdf. Lightning protection for Ham Radio category is a curation of 23 web resources on , Lightning Primer, Lightning Detector, PL259 Surge Arrestor. Of course, when you install any metal pole on your roof, you are creating a lightning rod! Amateur Radio Lightning Protection. Two part Lab Notes from QST on lightning protection by Mike Tracy, KC1SX. 2) Zero reference for entire building electric system. Post #1582. This grounding system addresses both the electrical ground and RF grounding requirements in Ham radio. The lightning protection device is great. None of them DC equipment at the sound of thunder. It doesn't scare away lightning, and only makes a difference if it's part of a well designed grounding system. About Amateur Radio Grounding to Protect Against Lightning The resource is currently listed in dxzone.com in a single category. PolyPhaser Lightning Arrestors When it comes to lightning protection, PolyPhaser® is the recognized leader for providing superior performance, reliability, and multi-strike capabilities. 4 Earth Grounding Wire - 25 FT “Lightning Protection” in the Technical Information Pages. Lightning Protection using Relays February 24, 2012 August 29, 2008 The topic of lightning protection of our radio equipment and everything else in our homes wisely comes up often in the various ham related email lists on the Internet. Post #1578. Lightning Protection AC Power Safety RF “Grounding” (RF feedback - Tx) ... • FAA Grounding Standards STD-019e2 (google for pdf) • IEEE home protection from lightning ... – Radio equipment manufacturer • BS in Electrical Engineering. Grounding Information Links A Discussion Of GROUNDING METHODS by WA3SWS, SWS Security Lightning Protection - An A C/DC GROUND i s not an RF GROUND GROUND RODS - And which is better? What is not discussed in these and other technical documents are installation procedures and examples. Lightning Protection and Grounding Michael Stuart K5KM. A strike will jump over the insulation and the 20 kA will lift up the radio side of the device to some kV. It depends! • Lightning Protection for the Amateur Station (Ron Block, NR2B – Jun/Jul/Aug 2002 QST ) – ARRL website, available to the public not just members • Power, Grounding, Bonding, and Audio for Amateur Radio and RFI, Ferrites, and Lighting protection component from Alpha Delta. A lightning strike Photo taken from top of Petronas Towers in Kuala Lumpur Malaysia; Whatever the reason for needing to ground an antenna, there are many instances where this is required. If properly grounded, a site can take hits all day long. Grounding is very important. 3) Equalize all potential differences. I've been a ham for over 50 years and have personally known scores of other hams; and I have never known anyone who ever took a direct lightning hit to the antenna. • Protection of the equipment found in a typical HAM shack. The device is intended for long grounding wires. Of course designing in good lightning protection devices on a good single point ground (SPG) is still urgently suggested. Power, Grounding, Bonding, and Audio for Ham Radio Safety, Hum, Buzz, and RFI Jim Brown K9YC ... Grounding is for SAFETY Lightning protection Blows a breaker if a power system short Connections should be big copper and short. Pos... Ham Radio-Crazy Antennas and QRP-The baseball diam... HF NVIS Antenna First Look. Power lines feeding shack equipment should be grounded to the same entrance point as the antennas. Grounding Typically, a ground rod driven into soil Min 8 foot recommended depth copper or galvanized steel rod Min 8 AWG wire run to single point star / shack ground and equipment Can prevent equipment damage from nearby lightning strike Lightning protection itself is a complex subject Let's concentrate on the electrical systems protection first. Since I've never used any in 39 years, I probably never will. You spent good money on your Icom, Kenwood, Yaesu, Ten-Tec, Elecraft radio… probably a lot. Here is a good power point presentation on lightning (in PDF form) by Phil Salas, AD5X. Introduction. 1) Cause operation of overcurrent protection. When grounding an antenna it is necessary t undertake it knowing how to … Lightning WILL find a path to ground and it won't just vaporize inside your jar. Polyphaser has a great page of tech notes here. The "Z" design makes it easy to install and remove coaxial cable connectors. Proper radio room cable and power entrance RF grounding also works well for lightning protection! Notes: Proper lightning protection for a ham radio station can involve more variables than any other type of radio site. This item is not DC blocked, so both RF and DC control voltages can pass through. Basically, they look like a lightning… Dave, N9KMY. The method employed in (b) of the diagram may appear to have the best protection since there is a direct path to ground from each TD1016: An overview of Lightning Protection for Ham Radio Stations . Is there an advantage in grounding at more than these sites? Lightning Strike Density. The antenna location will establish the grounding requirements, while the station location will drive the protection requirements. No ham shack is complete without spending, say, another 10% of the radio cost on lightning protection from PolyPhaser, Alpha, etc. Motivation For This Presentation Performed substantial research in lightning protection/grounding in the course of setting up a home HF/VHF/UHF station During this work I found that: Grounding/lightning protection is a relatively complex subject There is a significant level of mis-information and/or multiplicity of opinion The average ham cannot usually implement the ideal ground 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. Power Protection. This gadget still depends strongly on a well designed grounding, bonding and LPZ system. Newsgroups: rec.radio.shortwave Subject: Grounding is key to good reception, was: Experience w/NRD-535 In your recent post you advised that coax should be grounded at two sites, first at the antenna and then just before entering the house. Short Ham Antennas for HF. lightning protection 1.pdf. Please click Accept Cookies to continue to use the site. Thanks to "Tinker John" (W5CYF) for this well-paced lesson on Ham Radio Station grounding. ... View Lightning Statistics. How does the police department stay on the air? Title: Grounding Tips for the Shack John covers the basics of bonding, grounding, and lightning protection in a nice, comfortable manner. Post #1579. – There is a significant level of miss-information and/or multiplicity of opinion. Why Grounding is Important? Ideally you have an exterior antenna up high for best performance with your radio. Amateur Radio Station Grounding Common Practice Single Point vs. How do you think radio and TV stations stay on the air through storms? Although John covers a lot of material in just a few minutes, you may want to check out the latest edition of the National Electrical Code (NEC) for further information. Note that there are 5 pages of articles. MESH vs. Multi-Point? You can see pictures of how I do this at the end of this article . Proper lightning protection for a ham radio station can involve more variables than any other type of radio site. You do need to comply with code guidelines for lightning protection, which has little to do with "RF" grounding. – The average ham … The antenna location will establish the grounding requirements, while the station locati on will drive the protection … But I have known hams who limited their enjoyment and capability of the hobby because they were terrified of lighting. • During this research I have found that: – Grounding/lightning protection is a relatively complex subject. The downside to that is that vertically-oriented VHF/UHF monopole antennas are a juicy target for lightning strikes. One way to accomplish is that the coaxes be bonded to … HF Ham Radio Antennas For Apartments (AC4DG). That requirement is that the coax feedlines be connected to the electric utility ground. Resources listed under Lightning category belongs to Technical Reference main collection, and get reviewed and rated by amateur radio operators. 10' Ground Braid Assembly w/.25 Rings - 1"Braid 2 Year Warranty 1" Flat Tinned Grounding Braid - 10 FT No. How many Ground Rods? $\begingroup$ I'd say it is not much better than a good DC blocked lightning arrestor. Consider the following diagram of two grounding methods. And to the other comments like "I've been doing this for 50 years, bla, bla" is pure luck. DX Engineering Universal Copper Grounding Clamps, model DXE-UCGC-Z, are custom designed to provide a ground rod mounting solution for various types of lightning protectors commonly used for Amateur Radio. Avoid damaging static discharge and lightning with this affordable component. Note that the LPD does only two things - it provides a solid ground point for the coax shield, and it prevents large differential voltage in the coax. ... tower from lightning Grounding and Lightning Protection. ... Yaesu FT ‐101, Ham M, RingoRanger, ... ICE has resistor at output to bleed voltage from Capacitor and protect Radio. Power, Grounding, Bonding, and Audio for Ham Radio Safety, Hum, Buzz, and RFI Jim Brown K9YC ... Grounding is for SAFETY Lightning protection Blow a breaker if a power system short Connections should be big copper and short. "There is no safer way to protect “HAM RADIO GEAR” (not commercial stations) simply unhook it from any electrical paths when not in use. ... tower from lightning How to Protect Your House and Its Contents from Lightning IEEE Guide for Surge Protection of Equipment Connected to AC Power and Communication Circuits, Published by Standards Information Network, IEEE Press; Welcome To PolyPhaser On-Line Leading the communications industry in RF lightning protection and grounding solutions. Are involved in EmComm curation of 23 web resources on, lightning Detector, Surge. Research I have found that: – Grounding/lightning protection is a curation of 23 web resources,. Of opinion ( in PDF form ) by Phil Salas, AD5X 's concentrate on the air good money your. Category is lightning protection in a nice, comfortable manner communication, especially if they are involved in.. Radio side of the device to some kV some kV grounded, a site can take hits all day.... 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