Category: Websites

DIY magnetic loop antenna by Chamaeleon Antenna

Antennas/Magnetic Loop
A page describing how to setup a magnetic loop antenna with the DIY Magnetic Loop Starter Kit produced by Chamaeleon Antenna. Includes a video and a detailed instructions to setup.Read the Original Article https://www.dxzone.com/dx33130/diy-magnetic-loop-antenna-by-chamaeleon-antenna.html

Keyhole Radio for Google earth

Software/RF Coverage Mapping
The ultimate Keyhole Markup Language (KML) plugin for Google earth. Keyhole Radio is a unique and powerful RF planning interface, accessed by loading a Keyhole Markup Language (KML) overlay in Google earth.Read the Original Article https://www.dxzone.com/dx33129/keyhole-radio-for-google-earth.html

Tower Coverage.com

Software/RF Coverage Mapping
Quickly Create RF Propagation Maps for Anywhere in the World. System will allow you to create Tower Coverage Maps for any geographical area in the entire world. Maps are based on actual RF propagation, topography, and land cover data.Read the Original Article https://www.dxzone.com/dx33128/tower-coverage-com.html

Beacons for Windows 8

Software/Beacon Monitoring
The Beacons app for Windows 8 makes it easy to observe NCDXF beacons. No need anymore to be able to decode the beacon’s identifier send in Morse-Code.Read the Original Article https://www.dxzone.com/dx33126/beacons-for-windows-8.html

DIY Dual Band 144-440 MHz vertical antenna

Antennas/VHF UHF
A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.Read the Original Article https://www.dxzone.com/dx33125/diy-dual-band-144-440-mhz-vertical-antenna.html

Top Amateur Radio Websites – Issue 1807

HF Portable Ops Solar Powered, KD8CEC Amateur Radio Blog, Amateur Radio Weekly, Yagi Antenna for 23cm ATV reception, Probemaster, Foundations of Amateur Radio – Podcast – How to make a mains filter for EMC and noise reduction, How to straighten Microbore copper tube, TARPN Packet Radio Networking Home Page, Carry bag for KX3Read the Original Article https://www.dxzone.com/top-amateur-radio-websites-issue-1807

Batteries for portable use

Technical Reference/Batteries
Batteries for portable radio operation are always an interesting subject for discussion. Review of some LiPo (Lithium-ion polymer ) batteries for amateur radio use.Read the Original Article https://www.dxzone.com/dx33122/batteries-for-portable-use.html

End Fed Half Wave Antenna Coupler

Antennas/End-Fed/End Fed Half Wave Antenna
A home made end-fed half-wave antenna coupler with antenna lenght calculator and counterpoise calculator based on center frequency. Includes pictures and drawings along to antenna homebrewing instructions with a home made on air wound transformerRead the Original Article https://www.dxzone.com/dx33119/end-fed-half-wave-antenna-coupler.html

Calculate Antenna Lenght in feet, inches and meters

Antennas/Antenna Calculators
Inches and meters Javascript Wavelength Calculator allow to input a frequency in MHz and calculate wavelenght in several units considering also fractions of wavelenght and the velocity factor. Includes an usefull inch to meter converterRead the Original Article https://www.dxzone.com/dx33121/calculate-antenna-lenght-in-feet-inches-and-meters.html