WSPR

WSPR Weak Signal Propagation Reporter WSPR (usually pronounced “whisper”) is a software application that uses the transmission mode MEPT-JT (Manned Experimental Propagation Transmitter – Joe Taylor). In MEPT transmissions, the radio becomes a beacon that transmits for just under … Read More

Dipole

Dipoles are one of the first antennas ever created. Indeed, Hertz himself is often credited as the inventor of the dipole, in 1886). It’s also the simplest antenna designs out there while staying very powerful … Read More

Software Defined Radio (SDR)

Software Defined Radio (SDR)

A software-defined radio is one in which functions such as tuning, filtering and modulating/demodulating are performed by software rather than hardware. The ease with which this is now possible is due largely to advances in digital electronics. … Read More

RTL2832

RTL2832

The RTL2832 is an IC produced by Realtek Corporation to demodulate DVB-T (digital TV) signals and send them to a host computer over the USB bus. It has an additional mode designed to allow reception of consumer … Read More

What is a DX cluster

What is a DX cluster?

Related wiki pages: Contesting, Logging, Logging sites, Propgation What is it? A DX Cluster is, in essence, a “chatroom” or node into which amateur DX hunters can post information about DX either worked or heard. Physically, it is … Read More

TYT TH-UVF1 Manual

TYT TH-UVF1 Manual

Most people agree that the manual that comes with this radio is horrible. Let’s try to create a better one. Modes Hold U/V to switch between manual tuning and preset mode. In channel preset mode … Read More

Quagi

Quagi

The VHF Quagi from an article by Wayne Overbeck, K6YNB in QST April 1977; “Building a 440MHz Quagi” description is from Gary Bonnor – VK4ZGB There have been many half-hearted attempts to combine a Yagi … Read More

SSTV software

SSTV software

Software allows the production and detection of signals used for transferring SSTV pictures. Most SSTV software allows for both sending and receiving SSTV signals, with the ability to auto-detect which mode is being received. A … Read More

Trans-Equatorial Propagation

Simplified ionospheric models portray the ionosphere as a series of horizontal layers that vary with time, location and sunspot activity. The real ionosphere is much more complex than this, particularly in equatorial and polar regions. … Read More

Small tuned loop

A small transmitting loop, small tuned loop or magnetic antenna is defined as a loop antenna of less than one-tenth to one-quarter of a wavelength in circumference. These are normally constructed as a single turn of heavy-gauge wire (AWG #10 or larger), … Read More