Search results

A free online calculator for making all of the calculations required to design and build small transmitting loop antennas, also known as magnetic loops by 66pacific.com

This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL

Sams Photofact downloads - Schematics and Service Manuals for Radios, Amplifiers, More

An experimental antenna similar to the TAK spiral antenna was evaluated for SWR response over the frequency range of 7.0 to 7.3 MHz, or the 40-meter band.

Specialized, business and industrial radios

Ham Radio T-Shirts, Caps, Mousepads, also vintage designs! Designs include logos from Amperex, Collins, Eico, Eimac, Gonset, Hallicrafters, Hammarlund, Heathkit, Johnson, Knight, Mars, National, Swan, Skywarn and others.

Online calculators for toroid coil, air-core coil inductance, XL, XC, and more.

Build an effective dipole antenna that needs much less space by adding two loading coils. This online calculator tells you how.

Use this online calculator to determine the length of a quarter-wave antenna from the frequency. Both metric and English units of measurement are supported.

Use this online calculator to determine the length of a full-wave loop antenna from the frequency. Both metric and English units of measurement are supported. Quarter-wave matching section lengths are also calculated.

Use this online calculator to determine the length of a dipole antenna from the frequency. Both metric and English units of measurement are supported.

EB5AGV / EC5AAU Boatanchor collection. Useful data on TV-testers, Collins, Drake, Hammarlund, Hallicrafters, National, Heathkit, EF Johnson.

Located in Johnson City, Tennessee - Washington County EM86.

The Brandon Amateur Radio Society serves the ham radio community in eastern Hillsborough County Florida.

Sams Photofact download Schematics and Service Manuals, Originals and downloads.

Rugged docking stations and vehicle mounts

An online calculator for designing and evaluating capacitors based on the capacitor's area, separation, number, and dielectric constant

An online inductive reactance calculator, accepts as input Frequency and Inductance

The amateur radio club serving Johnson County Tennessee and northeastern Tennessee and southwestern Virginia. Open to all licensed hams.