l1 coil

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.

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

ZL1BJQ HexBeam antenna - Hexbeam antenna project for 20, 15 and 10 mtrs

K9AY Loop design - Simple version of the K9AY loop antenna in normal delta configuration

Magnetic Loop for 40 meters - A magnetic loop antenna for 7 Mhz by ZL1BJQ

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.

Trap Dipole for 80 40 20 mt - A W3DZZ trapped dipole for 80 40 and 20 meters band by ZL1BJQ

VK9N/ZL1RS - Norfolk Island 6m DXpedition 25 March to 07 April 2012 VK9N/ZL1RS

DL1OFC German Amateur Radio Station  ^updated - German Amateur Radio Station DL1OFC / DN1MP / DF0ISE.

Hell Formats - Here is a simple definition of all the Hellschreiber modes

High Speed Telegraphy Club - High Speed Telegraphy enthusiasts club established in 1952

Yaesu FT-920 video review - Yaesu FT920 youtube review by Roy Sargon ZL1LK

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.