ferrite core bulan

OH7SV Windom baluns - Windom baluns for kilowatt range made with two ferrite toroidal cores amidon ft-140-61 and another schema with two ferrite rods

Balun construction - problems with iron cores - Lots of information and measurements relating to HF baluns and transformers constructed using Iron Powder cores

Transformer for Ground-Independent Receiving Antennas - Transformers theory and calculator of turns on binocular cores. Comparison with toroid cores.

Low cost 1:1 balun - A balun don't depend on use of ferrite beads, but use steel wool to attenuate any RF on the outer braid

Guanella 1:1 VHF choke balun - A model of a Guanella 1:1 VHF choke balun using a FT140-61 core

A 4:1 Balun  ^pop - A single-core 4:1 current balun of improved performance by Chris Trask N7ZWY PDF file

4:1 balun for 160 to 10 meters  ^pop - Articke By Clay Wynn

Chokes Explained - A "choke" is the common name given to an inductor that is used as a power supply filter element. They are typically gapped iron core units, similar in appearance to a small transformer, but with only two leads exiting the housing

A model of the W2DU 1:1 choke balun - Notes on making the W2DU choke balun by placing several ferrite sleeves around a coaxial cable.

Ferrite receive antenna - A very compact receive antenna made with ferrite bars by PA0FBK

Active ferrite rod antenna - An active antenna for HF done with a ferrite rod by OH7SV

The Ferrite Rod Antenna - Theory of the ferrite rod antenna

Ham Radio Contest Maps - US Contesters maps generated based on ARRL online score data by WM5R

Rhode Island area scanner - Woonsocket Rhode Island area scanner traffic, a mix of Police, Fire, Ambulance and even some aircraft

Newcastle Scan, Live Scanner - A live stream of radio scanner, You will Emergency Services, Police, Fire, Ambulance, Rescue, Transit officers, plus non ES like transport, media, taxis, couriers, buses, security just about anything. From Newcastle Australia

MicroMetal - Manufacture high quality low cost powder cores with a wide selection of shapes

Wire Harness Assemblies - Printed Circuit Board, Custom Overmold Cable Assembly, Box Build, System Integration, Sheet Metal

DX-Wire - German internet shop for difficult-to-find components, which are used by radio amateurs. Antenna parts, masts and mounts, cables connectors, wires, rf-chockes, toroids cores, twin-lead, teflon -strand, insultators

Universal Score Uploader - A free Windows application which allows you to post ham radio contest scores to getscores.org portal

KC9L PSK - KC9L PSK is a free PSK31 program based on AE4JY’s PSKCore DLL. It supports 5 RX channels, full duplex operation, and more. Even if it's development has been dismissed, is a good tool for windows 95/98 pc.

SvxLink - Echo Link client for Linux and general purpose voice services system for ham radio use. The svxlink server consists of a core that handles the connection to the tranceiver. The core can be configured to act as a repeater controller or to operate on a simplex channel

Antenna Selector - This project was built to be able to experience with more of an antenna and also in turn to be able to have a system that offers security to the receivers, carrying out the discharge to ground of the antennas

Coil Inductance Calculator - Calculate the inductance of a single-layer, air-core coil.

Tutorial on ferrite balun cores - Toroid cores, ferrite rods a good electrical tutorial on baluns

Winding Toroids - A Guide to safely wind toroidal cores by vu2fd