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Magnetic loop for 160 meters - Pictures and calculated values for this home made magnetic loop antenna for the 160 meters band by HB9MTN

Magnetic Loop calculator - Windows antenna design program for magnetic loops antennas by DG0KW

Design your Own Super J Pole  ^updated - Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole in a collinear design

Inverted Vee calculator - Online calculator for dipole and inverted vee antennas

AA3RL Transmission Line Calculator - Excel spreasheet that calculate virtually every transmission line parameter that one may need. Include Length conversions, Reactance and Length of Stubs

2 Meter Jpole Calculator - build your own 2 meter JPOLE Antenna

Design a J-pole Antenna - Enter the operating frequency in MHz to calculate the dimensions for your J-pole.

Log Periodic - MSDOS program calculates dimensions of log-periodic antennas by YU1AW

An Unusual Magnetic Antenna - This article by OK1FOU describes how to build a relatively small loop antenna which can be placed for instance at the balcony. It is especially suitable for a two band antenna covering two adjacent amateur radio bands (10/14 MHz, 14/18, etc.)

Loop Antennas and Calculator - The purpose of the calculator is to give you a quick overview of the feasibility of "squeezing" a loop into your available yard or apartment space. The calculator yields a reasonable approximation of dimensions, to within 5% over the amateur bands, using typical wire gauges ranging from 12-18 AWG.

Vintage Radio and Communications Museum of Connecticut! - We are a non-profit organization dedicated to the preservation of vintage communications equipment and the education of the public about its history.

DXCC List with your beam headings - You can have your persolal DXCC country list with correct beam heading calculated on you grid square location by ok2pbq

NALCO Northern Alameda County Amateur Radio Emergency Service

M0EDX - British amateur radio station ex UT7CT anton koval

Boston-Area University Police Radio - Police and Security Broadcasts at Harvard University, Boston-Area University Police Radio. Cambridge; Boston.

QTH Locator map - Click on the map and the QTH locator will be calculated

TANT 136 - DOS program for calculating the performance of a T antenna. Gives loading coil info and matching plus ERP by Reg G4FGQ

Networks - Calculate impedance matching networks by YU1AW

MatchNet - This program calculates impedance matching for tube and solid-state PA, LNA, antenna match-box, interstage impedance matching and all other impedance matching in electronic and telecommunication.

PreMuLoc for windows - This program combines the formerly know programs PreFind and MU-Locator into one but with many improvements to find the location of any prefix, country or Maidenhead locator! Display and find locators on any map and calculate the distance and direction between two locators.

Geosat - MSDOS program to calculate Az-El position of geostationary satellites at specific location and carrier to noise ratio of received SAT TV signal.

Mini Ring Core Calculator - The easy way to calculate toroid cores.

T-Pad / H-Pad Resistance Calculator - This calculator is designed to give resistor values for unbalanced T-pads, and for balanced H-pads.

Online Calculators for Radio & Electronic Design - Online calculators for toroid coil, air-core coil inductance, XL, XC, and more.

Toroid Winding Calculator - Choose Iron Powder or Ferrite and calculate required turns