“All About Circuits”
“All About Circuits” describes itself as an extremely active electrical engineering online community that provides both interesting content and useful resources for Electrical Engineers, including various engineering calculators as well as a free electrical engineering textbook.
Calculators by David Conn, VE3KL
David Conn, VE3KL, wrote the "Antennas and Transmission Lines" column for The Canadian Amateur magazine and has provided the following calculators.
|Reflection Calculator||David Conn, VE3KL||Calculates Forward and Reflected Power Waves in Lossy Transmission Lines|
|Elecraft Power Meter Code||David Conn, VE3KL||The Elecraft W1 performs calculations with an onboard PIC microcontroller and also allows the user to do the calculations...VE3KL.|
|SWR Measurements||David Conn, VE3KL||Antenna Reflection and SWR Calculator by VE3KL.|
|RF Coil Design||David Conn, VE3KL||RF Coil Design calculator.|
|Antenna Height||David Conn, VE3KL||This calculator computes the gain and elevation angles for various antennas that are mounted over a perfect or lossy ground.|
|Indoor Antenna 1||David Conn, VE3KL||Used to calculate the allowable maximum and minimum length of wire for a frequency between 3 and 30 MHz.|
|Indoor Antenna 2||David Conn, VE3KL||This calculator is similar to the Indoor Antenna 1 calculator, but includes the use of loading coils.|
|Helix Antenna||David Conn, VE3KL||This calculator is used to find the gain of an axial-mode non-tapered Helix Antenna and its physical dimensions. It uses either the classic Kraus model or the Emerson model. For more information please see the “Antennas and Transmission Lines” column in the January-February 2006 issue of The Canadian Amateur magazine.|
|Field Strength||David Conn, VE3KL||This calculator computes the received noise levels in a communication receiver given the input frequency and electric field strength. Handy for, but not limited to, BPL use.|
|Received Power and Path Loss||David Conn, VE3KL||This calculator computes the Received Power, Received Voltage (RMS), S meter reading and Path Loss for a line-of-sight radio system in free space. For more information please see the “Antennas and Transmission Lines” column in the September-October 2005 issue of The Canadian Amateur magazine.|