swr protection

KK5BL How To Build A G5RV Antenna  ^pop - How to build a G5RV Transmitting antenna Originally posted to the packet bbs system by KC6CFF. The G5RV is an easy-to-build 80-10 dipole requiring no traps. All bands are covered, including 30, 17, and 12. The G5RV has high SWR, by design, on most bands and a tuner is required

Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver’s output power verses the portion of that power reflected by the antenna system By Ken Larson KJ6RZ

Transmission Lines - Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwidth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specified in dB/foot and is a linear relationship.

J-Pole, tunable - An adjustable VSWR, 2 meter J-Pole

All about Lightning protection - Thierry LOMBRY, ON4SKY, gives advice to amateurs about lightning protection of an hamshack, including pictures and links.

PROCOM Antennas - Manufacturer of communications antennas, bandpass filters, RF combiners, receiver multicouplers, diplexers, duplexers, RF connectors, RF circulators, RF isolators, RF couplers and SWR meters

Electronic speciality products - Lightning Protection Products For Ham Radio And Computers

Delta Technology - DELTA Technology is specialized in the lightning protection field, surge arresters, lightning counter.

Rabun Labs - Lightning protection for electronic equipment

PolyPhaser - Technical experts in RF path protection

Automatic Lightning Protection. - Lightning Rods - Protect your family, home, and property. Top quality copper and aluminum equipment.

Citel - We have a wide range of power protectors and surge protection products available

American Technical Resources - Heavy Duty Surge Suppressors, telecommunications protection, industrial twist lock enabled equipment all voltage, phase and frequency ranges

IMEN PAYA Eng. Co. - Supplier and manufacturer of earthing & lightning protection equipment. Also provider of all electrical instrument, based in Iran.

Malaysia Surge Protection - Global Lightning Technology - Malaysia lightning Malaysia surge protection system

Lightning Protection Corporation - Lightning & Surge Protective Devices from Lightning Protection Corporation

Wavenode SWR and RF wattmeter - The WN-1 is a precision RF Watt, SWR, and DC Meter to digitally monitor your amateur radio and emergency communications stations.

AGL Ham Store - Antennas, antenna towers, coax cables, lightining protection, wattmeters, power supplies and accessories dealer based in Texas

EMF Safety Superstore - The Ultimate Source for Electromagnetic Pollution Detectors, Shielding Devices and Protection Information

AEA - Wireless software - AEA Wireless Director Software Series turns PC's (running Windows 95/98/2000/ME or NT) into powerful tools that expand the use and power of SWR, Return Loss and Complex Impedance Analyzers.

ERP Calculator Plus - ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss

Why grounding - Overvoltage protection, Voltage stabilization, Grounding in wiring, Ground wire resistance

Station Lightning Protection - This website outlays the basic knowledge, safe design and installed equipment that are employed in the lightning protection system of a US Coast Guard Auxiliary Radio Facility. This should also be relevant to the Civil Air Patrol, MARS, and Amateur Radio stations who provide emergency communications capability for public safety or the military

Lightning Primer - Lighting protection document by Glen E. Zook, K9STH

About Lightning Protection - What You Should Know About Lightning Protection by Joseph H. Reisert