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10 meter wonderbar antenna - 10 Meter WonderBar Antenna, present an SWR 1:1 over entire band, great DX, rotateable by hand, 8 ft long - build for about $20

8el 50Mhz / 70Mhz Dualband Yagi - Only just over 6 foot long, a compact 8 element dualband Yagi for 6 and 4 meters band. No traps or coils, no matching required. Simple to build by G0KSC

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.

RF choke or 1:1 balun - RF Choke to prevent hf currents on the feedline or...1:1 Choke Balun, sometimes called the "UGLY BALUN"

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

LA1IC Coax-Fed slooping longwire - Simple, inexpensive and easy to erect, this antenna provides directivity, low angle radiation and a small gain on a number of HF bands.

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.

Long Range Wi-fi Dish Antenna - Build parabolic WLAN antenna adapted from a small satellite dish. It provides high gain and long range connections.

PY0FF online log - PY0FF Online Long by Andre in SA-003 Fernando De Noronha Archipelago

N4OTC Old Town Amateur Radio Cruisers - Old Cars and Amateur Radio. This club has a repeater on site of the World Longest Running car cruise. Part of the ARRG.US network

Satellite for Beginners - Learn how to start using ham radio satellites for your DX contacts, PDF presentation by Dave Long ZS5FR

SK6AW Maidenhead Locator Conversion - Convert to/from maidenhead gridsquare, decimal or DMS long/lat. Find your locator on smartphones via gps in your browser!

Ham Radio below 9 kHz - DK8KV Longwave information

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

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

GridLocW - GridLocW a Lat/Long to Maidenhead converter for Windows with optional GPS support

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