ground indipendant

Ground System on a 160M vertical - Ground system measurements on a 160 M vertical by Rudy Severns N6LF

A Lowband Antenna that is Almost Free  ^pop - The Shunt-fed Tower, an effective Low Band Antenna, uses your beam as a capacitive top-hat and only needs a simple feed network and a good ground system to work DX on 80M and 160M.

2-Element-Yagis for HF  ^{updated  pop} - 2-Element parasitic Yagis for the Shortwave-Bands 10-12-15-17-20-30m. The antennas are feeded with the DK7ZB-match. A quarter-wave choke of coax is grounded at the socket.

Dipole Height  ^pop - How High should my Dipole be? Dipole Antennas and the effect of height above ground

How to make an end-fed antenna work  ^pop - Here is a sure fire way to make end-fed halfwave antennas fed with a 50 ohm coupler work - without long radials, grounds, chokes, voodoo.

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.

Ground Problems - Collection of articles about ground systems

G5RV vs. Ground Plane on 80M - Comparison tests by WF7T of a G5RV antenna vs a GP antenna on 80 meters band

The K6STI Receiving Loop - This relatively unknown antenna does an amazing job pulling weak low band signals out of man-made noise backgrounds

Long Loopstick Antenna - Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a long wire or ground.

Amateur Radio Antennas: Ground Theory - Perfect ground vs. poor ground. What is the difference? How does the ground influence the DX-gain?

A Modern Thermocouple Ammeter - Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF

Ground / Radial Systems - Guide to ground mounting antennas by Bencher

Groundplane antenna - Short guide to build your own groundplane antenna, includes radial measurements fro warc bands

Half square antenna - The elevated half square antenna is a very simple antenna that can be constructed from common materials yet gives significant improvement over a dipole at the same elevation. Ground mounted versions of this antenna are commonly used in amateur radio for 75/80 and 160 meter bands

AA6E station log - Notes from an amateur radio operator. Martin Ewing Branford, Connecticut, USA, topics are Ten-Tec Orion, Station Grounding, PSK31 Morse, etc.

BHI Ltd - Noise eliminating products. Remove unwanted background noise and interference leaving only the speech. Clear communications, listen stress free. Dsp noise cancellation solutions.

MicroSignals - MicroSignals produces a line of RF and IF signal processing components that offer high performance at an exceptional value. To achieve this MicroSignals began with an engineering team that possessed an excellent background in RF Transformer and Balun design.

ALT Fabrication - ALT Fabrication manufacturer and distributor serving the telecommunication industry. Boomgates, Sector frames, grounding, electrical.

Multi-Tech Industries, Inc. - Manufacturing Precision Products Since 1969. Rotary Switches, Strain Reliefs, Ground Fault Units

Better Metal LLC - Manufacturing distributor of infrastructure products for the telecommunications industry; antenna mounts, ice bridge, cable ladder, ground bars, weatherproofing, exothermic, safety equipment.

Space Weather Education - Special space weather course designed to teach individuals without any background how to predict space weather

Antenna Model - Commercial software for the analysis of wire antennas. runs under most Microsoft 32-bit Windows operating systems—Windows 98/ME/NT4/2000/XP Analyze most wire antennas in free space, over perfect ground, or over real-world grounds with the conductivity and dielectric constant you specify. You describe the antenna to the program in easy-to-use spreadsheet-style input window

Ground Problems - RF ground systems

Grounding and RFI - Described system was designed to provide a high level of lightning protection - there are three levels of defense to guard against let-through. It isn't perfect, but does, however, follow good guidelines and shows measured improvements in RFI reduction.