ftdx5000 hidden menu

A turnstile antenna for 2-meter ARDF - Antenna design for use with hidden transmitters on international-rules ARDF events

Simple active antenna - This circuit shows an active antenna that can be used for AM, FM, and shortwave

Why active antennas aren't perfect - There have been various comments here regarding the effectiveness of active antennas

The Carpet loop indoor antenna  ^pop - High performance indoor shortwave antenna, the Carpet Loop II is an ideal step upward for the listener who wants something better than a random wire but doesn't want the expensive dice roll of an active antenna.

Hidden Antenna - Packing crate HF antenna

The Carpet Loop - The Carpet Loop II is an inexpensive, easily built, high performance antenna that can work in almost all apartments.

Practical indoor antennas - Some practical indoor antennas that can be built by anyone

The Bird Feeder Antenna - A hidden antenna must be just that: hidden. So don't install an antenna, but something else. Lika a bird feeder.

Antennas : theory and designs - Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL

K3MT's Grasswire antenna  ^updated - Another approach to hidden HF antennas

Piccon - PicCon is a PIC microcontroller based radio controller designed for hidden transmitter hunting

Hidden Transmitter Hunting - Lots of information of hidding transmitters, building portable yagi antennas, s-meters, and much more

Transmitter hunting - Locating or finding radio transmission sources or hidden radio transmitters is known as transmitter hunting.

Thunt.org : transmitter hunting - Amateur radio direction finding, transmitter hunting web site from San Francisco. Triangulating a radio signal direction and plotting its bearing on a map. Hunters use doppler systems for tracking hidden transmitters anywhere in the san francisco bay area, fremont california

Hidden transmitter hunting - Interesting t-hunting projects, from antennas to audible smeters

Albuquerque Transmitter Hunting - An active group of Amateur Radio operators who locate hidden transmitters for fun and in times of need, such as determining the source of interference to local repeater systems or individuals who use the Amateur Radio bands illegally.

Transmitter hunting, in San Francisco Priority listing - Amateur radio direction finding, transmitter hunting. triangulating a radio signal direction and plotting its bearing on a map. hunters use doppler systems for tracking hidden transmitters

Keplerian Elements - Keplerian elements are the inputs to a standard mathematical model of spacecraft orbits.

Hidden and stealth antennas  ^pop - Antenna Restrictions, Power Restrictions, RFI Problems, or Limited Space keeping you off the air?

Basics of Propagation by ON4SKY - Thierry LOMBRY, ON4SKY, develops in several long articles the bascis of propagation. His website includes also a French section dealing with auroras.

Pacific Coast Parts - ALPINE * AMANA * CASIO * CASIO-PHONEMATE * CLARION DENON * FISHER * HITACHI * KENWOOD * MENUMASTER PANASONIC * QUASAR * TECHNICS * TOSHIBA * SANYO

Icom IC-706 mods and manuals  ^pop - Programming interface schematics for Icom: Programming software for Icom IC-706 (Icom IC 706 IC706) : PDF Service Menu for Icom IC-706 (Icom IC 706 IC706) : PDF Service Manual with schematics for Icom IC-706

Kenwood TH F6A service menu switch - TH F6A service menu, On TH-F6 transceiver, the Service Menu is accessible only by opening the transceiver

DX Activities of ONL5183 - Whith more than 20 years of ham practicen SWL Thierry LOMBRY, alias ONL5183, has written several technical pages about ham activities, including propagation, radio perturbations, radioastronomy, DXing, QSLing, ham-spirit, review of material and more. This very interesting website is completed by a large French section devoted to amateur astronomy illustrated with vivid colors pictures.

G7RAU Live MUF V7 - Live MUF is a DXC (cluster) telnet client which attempts to resolve propagation modes from spots and also attempts to calculate sporadic e possibilities purely based on incoming data from the cluster