ground plan

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

Vertical Radial Ground Systems - Tom, K1JJ on radial ground system applied to 160 m vertical array

W1AB Killer Antenna - An elevated ground plane sized as a 40 meter antenna but fed with ladder line and antenna tuner for hf and 160 meters.

6m Umbrella Ground Plane Antenna - 6m Ground Plane Antenna from Beach Umbrella by N0EQ

Bent Dipole with gain - Bent dipole plan by G8MNY

Hentenna Applications - Plans and measurements to build the Hentenna antenna for HF bands and for the 6 meter band

Hentenna for the 6m band - An Hentenna plan for six meters band

J-pole antenna for 915MHz - A 915 MHz four bay j-pole antenna plan

The Optimum 6 Element Yagi-Antenna - A 70cm and 2m 6 elements yagi antenna plan based on the IEEE Transactions on Antennas and Propagation

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.

Simple wire antennas that work - Dipole, inverted V, full wave loop and grond plane antenna quick reference plans

HF BandPlan by RAC - Canadian HF Bandplan by RAC in pdf format

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.

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

Propagation Planning for DXpeditions - 6 Steps for a More Successful Trip by Carl Luetzelschwab K9LA

Planning a Digital-ATV Station - Article explain how create your own D-ATV station. By Ken W6HHC & Robbie KB6CJZ on RF Newsletter

New York Repeater Directory - It origionally included NYC Metro and Long Island, but has expanded to cover all of eastern New York as well. Future plans include expanding to cover all of New York state. The listings are a reflection of each repeater's true status, regardless of their coordination

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.

Explanations of LDE - 15 possible explanations for Long Delayed Echoes by University of Oslo

Magnetospheric ducting as LDE cause - LA3ZA on magnetospheric ducting as an explanation for delayed signals on 3.5 MHz

Hustler 5BTV or 6BTV: roof w/radials or ground? - Hustler 5BTV or 6BTV: roof w/radials or ground? is a topic in the Towertalk forum

PExprt - Tool for magnetic component design and modeling. Design and modeling of magnetic components such as inductors, planar transformers and integrated magnetics used in power-electronics applications.

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

Earth Grounding Construction Materials - Article about types of materials that make the best earth grounding systems

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