DXZone.com

ARDF Sprints and Fox-oring

Operating Modes/Radio Direction Finding
About Amateur Radio Direction Finding events, sprint and Fox-Oring spcialities. Sprints are intended to bring ARDF nearer to the public and to attract potential sponsors and new athletes to ARDF. Foxoring encourages ARDF enthusiasts to improve their orienteering skills.

ICOM IC-R20

IC-R20 by Icom. Wideband Receiver Professional radioreceiver, allow double receiver, from HF to Microwave, digital recorde, DTCS, Memories and 11 hours countinuous reception.

Microwave Filter Company

Manufacturers/Filters
Microwave Filter Company is a leader in the design, development and manufacture of high quality passive electronic filter products in the 5 Hz to 50 GHz frequency spectrum.

Antenna Mast Guying for Amateur Radio Antennas

Antennas/Towers
Article based on ROHN engineering specification that will guide on proper guying heights and guy lengths when guying ham radio antenna masts. It will help you determine ahead of time the proper length of guy wires and the distance from the base of the mast to the anchor points

How setup the antenna tower

Antennas/Towers
A multiple page article about assembling the antenna system, this section includes informations on constructing of the concrete tower base, starting from setting up correctly the foundations in relation to the antenna height.

Top Amateur Radio Websites - Issue 1919

Isotron Antennas, Maria Maluca by DL4AC, G3TSO Mobile Antenna Page, Flag Database - Miniflags by Mooney, Microwave Transverters Projects

KM4NMP

Ham Radio/Blogs/USA
Web site and blog that reviews equipment, goes over safety, and display projects being built. Includes Yaesu FT-891 and Ameritron RCS-10 Review, a 555 Morse Code Practice Oscillator, and and arduino based Morse Code Practice Oscillator