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A simple current balun for the FM broadcast band

Table representing loss of Coax Cables in db per 100ft.

Useful data-sheet on RG coax cables compiled by NA5N

Coaxial cables attenuation chart

BIRD RF power measuring, new and used, HENRY RF power amplifiers (used HF amps), TOHTSU coaxial relays, SAMLEX power supplies, RFI chokes reduce interference, Parts parts, tubes, Used amplifiers, radios, antennas and accessories, Los Angeles, CA.

SSB-electronic gmbh based in Germany produces coax cables and connectors, rf parts and components, SDR receivers and transceivers, transvertes, attenuators, coax relays, precision directional couplers.

The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency.

Complex CAD and Optimization Software for Waveguide, Coax, Combline and Antenna components design and antenna modelling

An impedance transformer (9:1) to feed a high impedance long wire (~450 ohm), down to a 50 ohm unbalanced coaxial input.

The Coaxman by Clear Signal Products, Inc. features a complete Wireman line of coaxial cable and antenna wire. Antenna wire, baluns, coax connectors, insulators, ladder line, magnet wire, rope.

Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes

Based on original G2BCX design this J-Pole antenna for the six meter band is made with a homemade ribbon cable. The antenna shown in this article includes a coaxial cable choke feed to remove RF currents from flowing on the outer of the cable.

picture and dimensions of a coax loop antenna centered at 51.490 MHz

How to check for propoer connector installation by using a common multimeter to verify conductivity and resistance.

Contest, Antennas, Rotating Towers, Rotors, Guywires, CoaxHardlines, Specs and more

Calculate online, ERP in dB and dBi given PWR Frequency Coax lenght and type and antenna type

A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cables. Many hams connect the center conductor of the coaxial cable to one side of the dipole, and the shield to the other. Wrong!

Double Bazooka Antenna, a simple coax based and broad band antenna you can easily build

Automatic band decoder, six way antenna relay, band reject coaxial stubs and more. Top Ten Devices is a two-man company formed in 1991 by N3RD and W2VJN.

The document provides a comprehensive overview of baluns, which are devices used to connect balanced loads, like dipole antennas, to unbalanced inputs, such as coaxial cables. It covers various types of baluns, including voltage and current baluns, and their design, construction, and testing. The text discusses the importance of baluns in preventing RF currents on coax shields and their applications in Ham radio setups. It also includes practical advice on selecting and using baluns based on antenna impedance and power ratings, along with detailed performance evaluations and construction tips for different balun configurations.

Article on various type of transmissium medium, like parallel lines, twisted pairs, shielded pairs, coax lines

A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.

Tips and tricks on homebrewing your own Coax traps by ON7EQ

Construction details of a multiband dipole that can can operate at high power levels, and match its 50-ohm coax feedline without a tuner

A simple center-fed dipole made just with a thin-wall PVC pipe, aluminum tape, and RG-8X coax

A sourge arrestor for PL 259 connectors. A voltage surge arrestor to limit the voltage that may come back down the wire or coax after there has been static build up

How to make a half l or quarter l coax cable for a specific frequency

Calculate power loss depending on coax cable you use

Improper grounding or earthing system can cause several unwanted RF interferences (RFI) to television sets, broadcast receivers, hi-fi sets and telephone sets. In this Article the author explain how to setup a proper radio shack grounding using coaxial cable and ceramic disc capacitor

Analysis of an antenna trap where a coil is formed of a length of coax cable, the outer conductor of one coax end is tied to the inner conductor of the other coax end, and the remaining connections form the terminals for the trap.

A loop antenna made with common RG-213 coax and rests on a cross made of 6 mm fibreglass rods anf a 6.5- 30MHz tune

A bazooka antenna design in German with dimensions for 20m and 40m band with RG174 coax cable stronger than the common RG58

A range of easy-to-build RFI filters by John Regnault, G4SWX

Data, RF, video protectors coax combiner protectors, grounding Items

CO2KK exposes some myths about using 75-ohm feedline with 50-ohm rigs and show how to build a cotanget transformer

Single Coax Feed to Multi-Band Copper Cactus Antenna.

A project of a 5 Antennas Relay Switch Box, all Switches & Relays have both contacts wired in parallel to improve reliability of operation, to prevent static build up, when an antenna is not in use the feeder coax is grounded.

G3TXQ study on coaxial cable demonstrate that it can reduce an element's length by something approaching the Velocity Factor of the cable

A simple coax dipole antenna for 144 MHz by 9A7PJT

From TenTec Inc a video that illustrate a PL-259 installation on a RG8X coax cable

Manufactures and sells coaxial connectors, coaxial adapters, coaxial cables, attenuators, directional couplers, fiber optic connectors, fiber optic adapters, fiber optic cables, coaxial switches, terminators, twinax connectors and cables and tools.

Classical coax-fed, off-center-fed dipole, feeded with a 4:1 Guanella balun

Coaxial stub filters used at W7GJ

Power connectors, power cables, coax cables, wires, batteries fuses and holders and tools

This video shows one way to use a scope and function generator to measure the length of a piece of coax transmission line as well as estimate its impedance

Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC

A method of installing a PL259 coax connector, a complete tutorial on how to solder Amphenol 83-1SP connectors

RF-and Microwave Coaxial switches and relays

This article contains the measurements for building a full wave loop using wire and length of 1/4 Wave Coax Matching Transformer

Dodgy plans to make Archimedean spiral antenna for RTLSDR software defined radio receiver. Made of two equal lengths of coaxial cable seems to be the easiest circularly polarized antenna to make that will cover a broad range of the rtlsdr dongles E4000 tuners