type 75 toroid/equivalen

The HB9CV antenna - Gain of this two element antenna is the same like gain of classical three element antenna of the YAGI type. Dimensions for 7-14-21-28 Mhz by pa3dlp

80 meters beacon antenna - A vertical antenna for vk2zay 80 metre CW beacon.

Wire Antenna for 75 and 80 Meters - This article is about a wire antenna that covers the entire 3.5 to 4.0 MHz band with an SWR below 2:1 consists of two coupled dipoles, one resonant at about 3.5 MHz and one resonant at about 4 MHz, resulting in the low SWR

RF Transmission Line Loss Calculator - This calculator computes the matched line loss for a transmission line using a model calibrated from data for the transmission line types built in to the calculator. It also gives an estimate of the mismatched loss if the mismatch is specified.

Baluns by Dan N5AR - There is considerable confusion about the various types of baluns, this article try to make it clear.

Les baluns - About different baluns types. Samples and schematics for several ratios baluns in french

Simple 75 ohm Coax Balun - A simple current balun for the FM broadcast band

End fed-Halfe-wave antenna - This type of antenna has same performance as a dipole, but requires only one single mounting point

80 m helical antenna - Prototype of a 80 meters helical antenna on a 6 meters squid pole by VK2TTL

A Pyramidal Antenna for 14-30 MHz - This article is about a type of log periodic antenna that surprisingly little has been written about

Horizontal Antennas above Real Ground - Antennas are influenced by the effect of the ground and by the type of conductors from which they are constructed. Effects of various types of grounds on a 1.825 MHz horizontal 0.5 wave dipole

Measuring Tower Resonances - Some notes on measuring tower resonances by Rudy Severns, N6LF

Past Times Radio - Specialise in the restoration and sale of vintage valve and transistor radios made from 1930 through to 1975

The Old Radio Shop - Old Radio Shop repairs and restores all types of vintage Tube , Hueytown, Alabama

10-m-Bakenstation DK0TEN - 28.2575 MHz Beacon from Lake Constance water works Germany

W4DOC Atlanta Radio Club - Atlanta radio club, w4doc. serving atlanta's ham radio community for more than 75 years

W7AIA, Clark County Amateur Radio Club - Clark county amateur radio club serving sw washington for 75 years! come find out how our local ham club offers programs that cover everything from the history of morse code and call signs to ham radio antennas

Icom IC-751A modifications - Experience and modifications of ICOM IC-751A

Icom IC 756 PRO III Review - ARRL review ICOM IC-756 pro III HF/6 meter transceiver at central michigan ARC PDF File

Yaesu FT-2000 YouTube videos - Yaesu FT-2000 on YouTube

Praxtel Telecommunications - Praxtel offers coaxial cable and connectors, as well as fiber optic cable, connectors and other products for telecommunication applications. 50 Ohm Coaxial and Helical cables. 75 Ohm coax cables.

Coaxial Cable The neglected link - The purpose of this document is to show the transfer impedance and shielding effectiveness of different types of coaxial cables

Duplexers: Theory and Tune Up - Basics on duplexersn type of duplexers and how duplexers works

Corrosion protection for tower structures. - Galvanic action. Corrosive effects of soil conductivity.

Intermodulation - Intermodulation distortion, commonly known as Intermods, is a type of interference that can occur in any non-linear junction.