voltage reference

VSWR Loss Calculator - This calculator is designed to give the efficiency loss of a given antenna, based on the input of VSWR (voltage standing wave ratio) and other subsequent factors

Basics of antennas - The current, the voltage, the impedance, the bandwidth, the polarization, and how the earth influences the famous radiation pattern.

Simple wire antennas that work - Dipole, inverted V, full wave loop and grond plane antenna quick reference plans

Beacon Station MO 189.5 KHz - This site is dedicated to experimental low frequency operation in the 160 to 190 kHz spectrum. LF beacon MO is no longer active. This page is retained only for reference information.

San Joaquin County Sheriff and Stockton Police - Recorded scanner radio traffic from police and fire department communications. Stockton Police scanner recordings of pursuits, fights, shootings, officer involved shootings, in progress high intensity calls.

Ottawa live audio feed - Ottawa EMS live police radio, and emergency services canada

Murfreesboro Police and Fire Dispatch Live Scanner Audio Feed - Murfreesboro Police and Fire Dispatch Live Scanner Audio Feed on RadioReference.com

Learn Morse code - Morse code basics by Jack G6UNC, morse code signals, procedure signals, Q codes and RST reference

RigReference.com - Reference guide for amateur radio equipment. View, compare and share ham equipment specifications and personal experiences.

Yaesu FT-450 (AT) reviews - Yaesu ft-450 (at) reviews RigReference.com

Yaesu FT-450 (AT) Mobile Amateur Transceiver - Specifications, images and product reviews for the yaesu ft-450 (at) mobile amateur transceiver

Commands for TH-D7 - Kenwood TH-D7(G) and TH-D7A commands reference

Yaesu VX-170 VX-150 battery - Yaesu VX-150, VX-170 BATTERY questions

Yaesu ft-60r vs Yaesu vx-6r - Forum thread comparing FT-60 to VX-6R

Yaesu VX-8R/E - Specifiation at rigreference.com about Yaesu VX-8R/E

WinPic 2007 - Program bulk erases, reads, writes and verifies PIC10F, PIC12F and PIC18F families. PIC part number selection. Programmnig voltage selection. 2V to 5V/ 0.25V step. Firmware updating.

Increasing Amplifier Relay Speed - Article describes a circuit that accelerates the coil of DC relays by momentarily doubling their voltage.

Batteries for Emergency Communications - The purpose of this paper is to provide a basic understanding of the different types of batteries available on the market today so the reader can make an educated decision about what type of battery will best meet their needs for Amateur Radio emergency communications Brett Hammond - KB3HGP

Simple beacon construction notes - Here is a simple, self-contained beacon which can run a few milliwatts or as much as a watt depending on choice of amplifier and supply voltage.

Universal frequency counter & voltage meter - to be used with QRP transceivers

6L6 Transmitter - 40 meters band 5 watts transmitter, uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen.

Icom microphone reference list - List of Icom microphones with connector type description and transceiver compatibility

The Adjustable Voltage Regulator - N1HFX article on adjustable voltage regulator

Home-Brew Regenerative Receiver - Home-Brew Regenerative Receiver and experiments with low voltage operation.

A 2 tube regenerative receiver - A low voltage 2 tube regenerative receiver