operating systems

Simple HF Baluns for 50/75 ohm coax - Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.

K5DDJ's 10 Meter Beacon - Operating 24/7 on 28.2485 Mhz transmitting 500mw into a 1/4 wave GP vertical antenna. Location is in San Antonio, Texas

K7EK beacons - Operating a full time ten meter beacon in Spanaway, WA

N7LT Beacon - Operating 28.249 MHz and 50.074 MHz from Bozeman, Montana

YB9BWN Beacon - Operating in 10 meter band from Bali Indonesia

K7NBB - We are a simplex radio club operating on 146.415 out of Reno, Carson City and surrounding areas.

K5TIT - The Texas Interconnect Team - One of the premier D-Star systems in the USA

NM-ARTS - Amateur Radio Technical Society - A hardware and software project group to support learning and creation radio circuits, general electronics, and uProcessor control systems

Olivia modes club OMC - International ham radio club dedicated to Olivia operating mode

D-Star presentation and sounds - A powerpoint presentation of the D-STAR operating mode by K7VE includes d-star sound samples

microHAM - Accessories for your hamshack, such as Band Decoders, various types of Antenna Switches, Antenna Stacking devices, special devices designed dedicated for the SO2R operating technique, USB Interfaces, cw keyers and many others

Entegrity Wind - Wind Turbines - Entegrity wind systems is a leading manufacturer of commercial-scale wind turbines with installations worldwide.

EQS Systems - Test and measurement instrumentation, AC & DC power supplies, power sources and analyzers, data acquisition systems and boards

Gage Applied Technologies - Gage applied technologies designs and manufactures high-speed data acquisition systems, high-speed digitizers in pci / cpci / pxi or pc oscilloscopes, providing utmost measurement fidelity for high frequency signals.

Structural Components - Designer and supplier of tower reinforcement systems to the wireless industry.

D-StarUsers.org - D-star amateur radio systems, your source for d-star digital amateur radio. D-Stars users website

Long Wave Radio - The World of LF, by G3YXM reference site for longwave operations. Introduction to operating on 136 and 501 Khz

W4DEX Experimental Stations - WD2XSH Experimental Station (505 - 510 KHz) WD2XKO Transmitting Station Stanfield,NC operating between 135.7 to 137.8 KHz.

Low Frequency Transmission Modes - Article by W1TAG on operating modes used on low-banding. The 2200 meter band (135.7 - 137.8 kHz) is only 2.1 kHz wide, so voice work on SSB or AM is out. Find out the best modes on LF

Keyboard Modes for 600 Meters - Evaluation of various operating modes on 600 meters

Operating Meteorscatter - Meteorscatter (MS) describes a propagation mode whereby the signal is reflected from rather small ionised patches in the E-region of the ionosphere.

Packet Radio on a Windows CE device made simple - How to use packet radio using the WindowsCE operating system

HF Packet Operations - Hints and guidelines for operating packet radio mainly for HF, but may apply to VHF too by ka1fsb

Yaesu VX-2R Manual - Operating Manual for Yaesu VX-2R pdf file size is 1417 KB

Number One Systems - Professional ready-to-use PCB design product.