5/8 ground plane

Radial ground system for verticals - Maximum-gain radial ground systems for vertical antennas by K3LC

20 Meter Ground Plane Vertical Antenna - This is a ground plane antenna for 20 meters with an imput impedance of 50 ohms

144 MHz 5/8 whip antenna - Making your own 2 metre (146 MHz) 5/8th wave whip antenna

40 Meter Delta Loop - Vertical height of the loop antenna itself is 34 feet 3 inches resulting with the bottom 60 feet 9 inches above ground project by K9IMM

Vertical antenna for 50 MHz - 5/8 vertical groundplane antenna for six meters band

70cm 2 x 11 elements Cubical Quad - A group of 2x11 elements all grounded quad antenna for portable operation on 70cm. Included detailed pictures and measurements.

EWE rx antenna for 80 meters - The antenna is an aperiodic inverted U which is operated against ground.. ewe antenna for 80 meters by PA0RCT

QEX Ground System Experiments - N6LF series of experiments on ground systems for vertical antennas. That series of reports was converted, with some modifications, into a series fo seven articles in QEX magazine.

Antenna Efficiency - K0BG article con antenna efficiency covering topics like radiation resistance, coil losses and ground losses, other kind of losses. How calculate efficiency and Bandwidth Notes

Cushcraft Trap - Coaxial Capacitor Repair - Repairing coaxial capacitor on cushcraft trap. Parts are no longer available from the manufacturer, home repair is the only option.

Unloaded vertical as a multi-band HF antenna - Performance of an unloaded ground mounted vertical as a multi-band HF antenna.

Quarter wave vertical antenna - About the basics of the quarter wave vertical and ground plane antennas that ares widely used for medium wave broadcasting, mobile radio communications applications and many more.

San Diego Radio Emergency Communications - San Diego REMCOM volunteer group specializes in serving the county and hospitals during drills and disasters. All members are FCC licensed radio responders, certified in ICS training, have passed security background checks with signed confidentiality statements.

LCARS - The Lake Country Amateur Radio Service consists of interested amateur radio (Ham Radio) operators from the Virginia and North Carolina counties that surround Kerr Lake and Lake Gaston. Our members have a variety of interests and backgrounds, bringing rich and varied experiences to the club membership.

SE Engineering - Manufactures FM antennas, mast ground kits, 75 ohm isolation transformer, for the broadcast industry.

GB Antennas and Towers - Dutch Antenna and Tower Manufacturers from Slimline Square Triangular Round Towers. Antennas production include Yagi Monoband/Dipole/HF Quad /50MHz and 70MHz Yagi-Quad, VHF-UHF yagi-Quad and Comby antennas VHF/UHF/SHF

Tilt Plate NN4ZZ - The TiltPlate is an antenna tilting mechanism that works with a tilt over tower and yagi to bring the antenna all the way down to ground level.

PSK31 Fundamentals and Setup - Background: The PSK31 philosophy, The QPSK mode, Varicode, Sound Card DSP Setup and Operating Tips

How Satellite Doppler Tracking Works - The Doppler Effect allows the distance between a satellite transmitting from space and a radio receiver on the ground to be measured by observing how the frequency received from the satellite transmitter changes as the satellite approaches, passes overhead, and moves away.

NOAA Kp Index Monitor - The Estimated 3-hour Planetary Kp-index plot

Cushcraft R5 picture - Picture of a Cushcraft R5 about 10 feet above the ground.

CHIRP - CHIRP is a cross-platform, cross-radio programming tool. It works on Windows and Linux and MacOSX. It can program many popular radios and exchange data between them includin Icom Kenwood Yaesu Alinco Wouxun Puxing Baofeng

Ground Systems - Basic ground system functions, lightning and safety ground, RF return-path ground and induced ground currents

Station Grounding - Will we ever be able to dispel the myths? Steve Katz, WB2WIK/6

What Does Your SWR Cost You ? - Wondering whether to spend a fine day with the YL or with the antenna? This article may help you decide by W1GV