accurate voltage referen

WB4BXW Diople Antenna Calculator - Dipole and inverted vee antenna calculator sufficiently accurate for wire antennas up to 30 Mhz

Build a HB 4:1 voltage BALUN for 1KW - In depth detail with photos on how to build your own HB 4:1 voltage BALUN that will run 1KW. Inexpensive and fun to build.

Matching Waves, VSWR at work - When the radiation resistance (voltage to current ratio) of an antenna is the same value as the characteristic impedance of the transmission line (voltage to current ratio in the line), all of the electrical energy transmitted down the line is taken by the antenna and radiated into space in the form of a radio wave.

Measuring antenna gain - Practical ways to get accurate results by Wayne Overbeck, N6NB

Irish Lighthouses - lighthouses and lightships of ireland and northern ireland with arlhs reference numbers for all irish lights

SOTA South Africa - Summits on the Air South Africa formed in October 2002 to draw up an Association Reference Manual and compile a list of South African summits that can be activated or contacted for SOTA awards

Passio Radio - Amateur radio reference site in french managed by F4EZC

The ElectraSlide Antenna - Modification of the DK3 design by Don Johnson, W6AAQ. No voltage dropping, operates on the full 12 volts. The control switch and the matching toroid are supplied. All you need is a standard 3/8 by 24 thread ballmount, 2 wire sheilded microphone cable for control wiring, and a CB whip cut to resonance.

FMI - FMI provides superior solutions in the design and manufacture of frequency control devices including Voltage Controlled Temperature Compensated Crystal Oscillators (VCTCXO), voltage controlled crystal oscillator (VCXO), Temperature Compensated Crystal Oscillators (TCXO), crystal clock oscillators, high temperature oscillators, surface mount and crystal oscillator products, phase locked sources and more.

Frequencies for using digital modes - These frequencies are to be used as a guide to find the related signals. They have come from several sources, and are, in no way, guaranteed to be complete, accurate, or inclusive.

Long Wave Radio - The World of LF, by G3YXM reference site for longwave operations. Introduction to operating on 136 and 501 Khz

Understanding propagation numbers - Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities

YAESU FL-2100Z Amplifier Repairs - The FL-2100Z amplifier referenced in the following images is the 6-Band model covering 10m thru 160m (no WARC bands) and not the 9-Band version that included the WARC bands. Modifications, schematics and manual

Yaesu VX-2 at RadioReference - Yet another wiki page about the yaesu VX-2 hand-held transceiver.

Yaesu VX-2R Quick Reference Card - A downloadable free quick reference card for the Yaesu VX-2R in powerpoint and PDF file ready to be printed.

Ham Club Membership - Ham club membership management software, designed to assist either the secretary, membership chairman, or any one else in a ham radio club to maintain accurate records about it's membership, vital documentation, or club assets by Alpine Software

Power Aamps RF voltages - This test circuit is easy to duplicate, and demonstrates the extreme voltages that appear in an amplifier when the load is improper for the amount of drive power applied.

Battery Equivalents - Cross reference thousands of consumer, watch and Amateur Radio Handheld batteries

Accurate Inductance Calculator - This page allows you to calculate in the most accurate way high-Q inductor coils.

Building a dummy load - Building a Dummy Load and Measuring Power Accurately by Ken, K4EAA

70 cm Power splitter - A simple accurate power splitter for the 70cm uplink to Oscar 13 by G8EUX

Small Unregulated Power Supply Project - Here's a simple power supply that can be used in many applications. It is not regulated , so keep that in mind for voltage sensitive devices , and of course you will need to understand how to select the correct amperage and voltage for the AC transformer.

HV power supplies - WV0NNI 2,800 VDC @ 2 Amps Continuous Variac adjusts filament voltage. A voltage doubler circuit, well suited for smaller, compact linear amplifiers.

Tube Reference - Electronic Vacuum Tube Reference Manual & Specifications from the RCA Receiving Tube Manual.

Military VT Tube Cross Reference - Rod's classic & Antique Radios