coil

80m mobile antenna - The antenna is made in four sections which consists of a base matching coil, a helical section, a centre loading coil and the top whip section with its capacity hat by G4DCH

Mobile Loading Coil Measurements - 75m Mobile Texas Bugcatcher Loading Coil Measurements

Current Through a 75m Bugcatcher Loading Coil - About experiments and measurements on loading coils using net standing wave current

Coil measurement experiment - Comment on W5DXP 2011 coil measurement experiment

Coil Q Measurements - Coil Q Measurements - With a special focus on wet coils.

Matching Coil Adjustment - There is a specific procedure which must be followed if proper adjustment of a shunt matching coil is to be achieved.

Loading Coils for 136 kHz - This page starts by showing how to make loading coils for LF, and goes on to describe two of the loading coil assemblies used to resonate the experimental vertical antenna used at GW4ALG.

The Short Dipole Using Coils - A very popular method of making a short dipoles resonate at a given frequency. This type of antenna is suitable for single band, narrow bandwidth use.

Coiled Coax Choke Balun - A very practical Balun for aerial work is the choke type

A Variable Base-Loading-Coil - A Variable Base-Loading-Coil for use under a HF Mobile Whip

160m mobile coil - 160m Coil design for a mobile antenna by N3QO

Homemade Loaded Coil Dipole - Homemade Loaded Coil Dipole ( w8010 diamond ) for 10, 15, 20, 40 and 80 meter

Bootstrap coax traps for antennas - 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.

Electronic Products Design - Electronic Products Design Inc based in North Carolina, offers you custom design of transformers, coils, and telemetry control systems.

Coil32 Priority listing - Coil32 is a free coil inductance calculator, that allows to calculate: single layer and multi layer air core coils, toroidal air core coils, inductors on ferrite rings, in pot core, flat coils on the PCB, and also LC resonance parameters. The program have additional plugins to calculate another kinds of coils. The application is free for usage and distributing.

Single-layer Coil Inductance and Q Calculator - This calculator ask as input diameter, lenght turn and frequencu and will return L and Q

How rewind solenoid coils - Rewinding solenoid coils

Winding coils - winding coils for construction project

Grip Dip Oscillator - Originally eveloped by I1FLC, uses seven plug in coils covering 3.0 to 30Mhz in a Colpitts oscillator circuit.