power supply 9.3v dc

Multiband wire antennas and ATUs  ^pop - DC1YB experience on multiband wire antennas. In particular examine FD4 windom and G5RV antenna, considering noise levels and matching aspects. Author reviews also the usage of Automatic antenna tuners in TS-50 TS-480 and GC-3000

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.

Where Does the Power Go - An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line

W1GQL's Homebrew Hexbeam - A site dedicated to HexBeam antenna construction. It is complete and you will find all information you need to start homebrewing your own hexbeam antenna.

The G3BGR Magnetic Loop - This ia a home built Magnetic loop antenna which was used by G3BGR, indoors on 7,10 and 14Mhz. The basic idea was in Radcom 1986

HB9MTN Loop for BCL - Magnetic Loop antenna for broadcasts band reception

Rhombic Antenna for Shortwave Radio Broadcasting - Rhombic antenna for shortwave radio broadcasting, general description and radiation patterns

Oklahoma Vintage Radio Collectors - Promote the preservation of the history, technology, and equipment of the early days of radio broadcasting and communications

Antique automobile schematics - Antique automobile radio repair and schematics

C6 Bahamas - Sand Dollar Villa is equipped with two antennas and two power supplies, and an extensive tool kit. Has proven to be an excellent spot for people on vacation who also like to engage in casual DX ham radio operation.

Ham Radio Podclass - Home of the Ham Radio Podclass & General Upgrade Podclass This podcast will prepare you to take the Technician Class ham radio exam or your General Upgrade Exam at an FCC Volunteer exam session.

Strange CW keys - Very strange morse keyers, like Onion chopper CW key, Handshake CW key, Chopsticks CW key, Typewriter CW keyboard, Refrigerator CW key by OH6DC

Comprod Communications - Maker of robust and strong commercial and amateur radio VHF UHF antennas

Low Power Radio and Broadcast Company - Manufacturers of high performance low power am transmitter products: sstran amt3000, bc-100, and the mw-250. for home and professional use.

KNLS English Service - KNLS English Service, this Is Alaska Calling! World Christian Broadcasting, Station KNLS, Anchor Point, AK USA

TLDetails - Transmission Line Details. This utility program shows the impedance and SWR at both ends of a transmission line and the details of power loss in the line. It includes characteristics for over 40 built-in line types. You can modify these values to see how small changes affect the results or to specify custom lines. All program inputs may be changed directly or you can use spin buttons to make the changes. If you are using a moderately fast computer you can hold down a spinner and "watch the movie" on the charts as the results are recomputed. By AC6LA

AutoRec - AutoRec is windows freeware time based automatic recorder - player for radio broadcast. Auto Recorder will record or play wav audio files, and execute batch or other executable application programs at scheduled times. The primary use for Auto Recorder is automatic, unattended recording and playback of network or other satellite-delivered radio station program material.

SlowFeld XP - Free windows program by G3PPT that permits RTX of FeldHell

Morse Tone Encoder - Generates Morse tones using the Soundcard. A neat tool for sending out short sequences of Morse tones.

Virtual Legacy Radio - Windows remote control for Yaesu or Icom. Displays the current transceiver settings frequency, mode, and others on the PC in an old-fashioned way that corresponds to the look of receivers in 70's. DX-Cluster Watch (DCW) is an application that automatically refreshes a web page with the dx-cluster content, parses spot lines from it, keeps a consolidated list and inserts the spots to VLR as frequency markers by OK1FIG

DTMF encoder - Generates dial tones using the Soundcard. A neat tool for sending out short sequences of DTMF tones.

An Intelligent keyer for FSK beacon usage - Designing a beacon keyer that transmit the relative output power along to call sign.

A Power Supply on the Cheap - Need a variable power supply that is short circuit protected and over voltage protected; Here is a good one that can be built cheap by VE3IVJ

DC to DC (12 to 24 V) Voltage Converter - This page describes a DC to DC voltage converter, pretty simple, for currents up to 500 mA by sv1bsx

SWR vs. Loss - Table of power loss to SWR relation