load coil calculator

Building High Power, High Q, Loading Coils - This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter (1.83 MHz) vertical antenna.

Inverted Vee calculator - Online calculator for dipole and inverted vee antennas

AA3RL Transmission Line Calculator - Excel spreasheet that calculate virtually every transmission line parameter that one may need. Include Length conversions, Reactance and Length of Stubs

2 Meter Jpole Calculator - build your own 2 meter JPOLE Antenna

Base Loaded 160M Half-Sloper Antenna - If you want an antenna resonoant on the 160 meters band this is a possible solution, but of course, need space.

Idiot's guide to antennas - A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles.

Currents in Standing-Wave Antennas - How can the current "flowing" out of the top of a mobile loading coil be greater than the current "flowing" into the bottom of the coil?

The Alabama Historical Radio Society - The alabama historical radio society - come visit our website and museum where we have a large collection of antique radios. our club does coil winding, has a large library, and a wealth of knowledge in our members.

ITU Zones map - A PDF File of ITU zones made available by Icom America

CQ Zones World Map - A PDF file of CQ Zones made available by Icom America.

PD5DP Ham Radio Manuals - Another collection of manuals to download offered by PD5DP. Includes ham radio manuals for Icom, Kenwood, Yaesu, Diamond and AOR products

Kenwood manuals - Many of Kenwood’s instruction manuals are available for download. Manuals are in PDF.

ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.

TS-850 service manual - Here is the Service Manual for the Kenwood TS-850 Transceiver split into four parts for download. TS-850 instruction manual also available

TANT 136 - DOS program for calculating the performance of a T antenna. Gives loading coil info and matching plus ERP by Reg G4FGQ

WEController - This software let you to control a pair of stepper motors, for three principle jobs: coil tuner, manual tuner control and satellite rotor control

Argo upload - Allows you to automaticaly upload ARGO screen captures to your webpage in a convenient way. by ON7YD

Rapido - Rapido will provide an automatic download of a JPEG picture from the internet at a certain time interval and show the picture on screen. In addition it allows you to save the downloaded picture on disk.

Mini Ring Core Calculator - The easy way to calculate toroid cores.

T-Pad / H-Pad Resistance Calculator - This calculator is designed to give resistor values for unbalanced T-pads, and for balanced H-pads.

Online Calculators for Radio & Electronic Design - Online calculators for toroid coil, air-core coil inductance, XL, XC, and more.

Toroid Winding Calculator - Choose Iron Powder or Ferrite and calculate required turns

A low cost dummy load - This article describes a low-cost, low-to-moderate power dummy load, which presents a 50-Ohm resistive load from HF through 440MHz.

Cheap and simple HF dummy load - This is the report of a MFJ-259B analysis of two 100 ohm / 5 watts resistors in parallel partially in italian

A good regenerative receiver - A good SSB-CW-AM regenerative receiver with a fine tuning by moving the wooden stick with a grounded piece of PCB towards the coil.