long range

ZMV Spiral antennas - An experimental antenna similar to the TAK spiral antenna was evaluated for SWR response over the frequency range of 7.0 to 7.3 MHz, or the 40-meter band.

Magnetic longwire baluns 1:9 - This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

DK7ZB hentenna - Descriptions for 144-MHz- , 70 MHz- and 50-MHz-Reflector-Hentennas

RX antenna for 160/80 meters - RX Antenna 160m/80m Band Splitter/Switch, a small project that will work along with the K9AY RX antenna

Cushcraft Trap - Coaxial Capacitor Repair - Repairing coaxial capacitor on cushcraft trap. Parts are no longer available from the manufacturer, home repair is the only option.

Doube Zepp extended antenna - An extended double zepp antenna by F5ZV in french

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 LF beacon MO is no longer active.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.

Baja Net Home Page - The Baja Net is one of the boaters’ favorite nets on the West Coast. It has a long history of handling traffic for mariners who are out of touch with friends and family. Several stations have phone patches enabling them to put you right on the line to talk to your loved ones.

Verdant - Designer and manufacture of Airborne Antenna & Radomes covering a range of applications. Products include vhf antenna ,uhf antenna,navigation antenna,comm antenna,blade antenna,vor/ils antenna ,L band antenna, direction finding antenna,DF antenna,vor,ils, IFF antenna on aircraft,aircraft antenna for airborne application.

New York Repeater Directory - It origionally included NYC Metro and Long Island, but has expanded to cover all of eastern New York as well. Future plans include expanding to cover all of New York state. The listings are a reflection of each repeater's true status, regardless of their coordination

DF5AI Long delayes echoes - LDE articles and reports about long delayes radio echoes by DF5AI

Long delayed echo at Wikipedia - Long-delayed echoes are radio echoes which return to the sender several seconds after transmission.

Explanations of LDE - 15 possible explanations for Long Delayed Echoes by University of Oslo

Long delayed echoes in EME - The following discussion about the long delayed echoes (LDE's) on the EME signals

LDE Resolved - Long delayed echoes resolved By Ailean Mac an Daroch

Long Delayed Echo Radio Phenomena - Article on LDE by Robert Dinse

LDE Reports - Long delayes radio echoes reports

Generation of Long-Delay Echoes - Different theory models to explain generation of long delayed radio echoes by D. B. Muldrew

WM5R Long Delayed Echoes - WM5R presentation of Introduction to Long-delaye echoes and theories among this propagation effect.

Wapedia: Long Delayed Echoes - About Long-delayes radio exchoes at wapedia

Here Comes the Sun - Propagation and Sun - Solar activity can aid or hamper HF propagation beyond line-of-sight range, WA1SVF and N6BV answers to questions about Sun influence on radio signals propagation

IC-7000 Mods - IC-7000 TV Enable Reception, ) TVRO & MARS (US version), TVRO & MARS/CAP Mods by N5AC, IC-7000 RX range expand mod, IC-7000 Tone noise, How to fix the IC-7000 audio noise

Radio Works - RadioWORKS is a tool for calculating various items related to radio waves and radio wave propagation. Get detailed information about a frequency, such as the free-space wavelength, band classification, propagation methods, common transmitter configurations, etc. Calculate antenna lengths or frequencies. View a 3D coverage map by providing a latitude / longitude coordinate and transmitter height.

MF TeleType - MF TeleType is a program for amateur radio digital communication via sound card, ham radio chat program for extra reliable text transmissions over long distance

A 40 meter SSB QRP transceiver - This transceiver was conceived as a power-efficient, small, lighweight unit to be carried in the backpack, along with antenna and battery.