Hobbies And Interests
High Frequency Bands
Shortwave radios operate in the high frequency band, regulated by the Federal Communications Commission. The high frequency band runs between 3 and 30 megahertz, known as the decameter band or wave. Below this band is the medium frequency spectrum, and immediately above it is the VHF, or very high frequency spectrum, used with some TV broadcasts. The Spider Antenna̵7;s resonator configuration is designed in such a way that the user can use the antenna from most anywhere without experiencing detuning between bands.
Mobility
Because of its patented tuning sleeves, the Spider Antenna offers users the capability to fit the antenna to their specific requirements. This is especially true when using the antenna in more than one location. Logging scales with the antenna allow quick and easy adjustment to pick up the desired frequency bands. This antenna works with the solid-state no-tuning transceivers available on the market today, because both the antenna and the transceiver require no tuning when changing from band to band within the 3 to 30 MHz frequency range.
Applications
Because of its mobility, you can use the Spider antenna in a variety of circumstances. Employ it as a permanent antenna, or attach it to a recreational vehicle, travel trailer, camper, automobile, truck or a boat on fresh water lakes. A special Spider Martimer is available for saltwater environments. Because of its light weight and size, the Spider Antenna doesn̵7;t experience signal loss known as QSB -- ham operator Q-code terminology for ̶0;your signal is fading.̶1;
Specifications
Made of anodized aluminum, the Spider Antenna̵7;s resonators in the 40 and 75 m range are wound on polycarbonate, with the rest of the resonators on fiberglass tubing. The mast attaches with a standards 3/8-by-24-inch threaded female bracket. The antenna stands almost 6 feet tall and weighs 2 lbs. It maintains a constant base impedance of approximately 50 ohms and requires a 52-ohm coaxial cable for hookup.