Antenna Circular Polarization

“Space communication has forced the use of Circular polarization. The fundamental advantage of circular polarization is that all reflections change the direction of polarization, precluding the usual addition or subtraction of main and reflected signals. Therefore there is far less fading and flutter when circular polarization is used at each end of the link.

 The use of circular polarization at one end only gives a loss of about -3dB. In order to achieve the full advantages of circular polarization it is necessary for all stations to use it. The table below shows the relationship between Horizontal, Vertical, RHCP (Right Hand Circular Polarization) & LHCP (Left Hand Circular Polarization) and Loss in dB. RHCP is also known as CW (ClockWise) Polarization and LHCP as CCW (Counter ClockWise) Polarization.

Left Hand Circular Polarization
(LHCP)

Right Hand Circular Polarization
(RHCP)

Read Full Article : Link

Video

Recent Posts

Solar Cycle 25 Is Here. NASA, NOAA Scientists Explain What That Means

September 15, 2020 No comments

This split image shows the difference between an active Sun during solar maximum (on the left, captured in April 2014) and a quiet Sun during solar mi... Read more

SPE Expert 1.5K-FA Linear Amplifier

July 05, 2017 No comments

300W • -60dB Product Specifications Powerful: solid 1.5kW in on on all modes. Very Light: about 10 kgs (about 22 lbs). Very Small: H 12, W 28, D 36 cm... Read more

Amateur Radio History: First Radio Hams

February 17, 2016 No comments

Just before the end of the 1800s, there was a high level of interest in the new and almost magical demonstrations of wire-less technology. There were... Read more

Radio Amateurs Pitch In to Help as “Hat Trick” of Major Coastal Storms Hit Northeast

March 20, 2018 No comments

Amateur Radio volunteers with WX1BOX at the National Weather Service in Taunton, Massachusetts, and various ARES groups had their hands full during Ma... Read more

MacLoggerDX Version 6.11 released

May 12, 2017 No comments

Dog Park Software has announced that version 6.11 of MacLoggerDX has been released.   What’s New in this version: Added Open Note File to Log and Clus... Read more

New ARRL President Happy to be Part of “Exciting Times for Amateur Radio”

February 08, 2016 No comments

Making his inaugural ARRL National Convention appearance as ARRL President, Rick Roderick, K5UR, said he’s looking forward to meeting many League memb... Read more

NX-3000 Series lightbar and custom voice prompts | Kenwood Comms

August 15, 2019 No comments

The lightbar and custom voice prompts are shown in operation on the NX-3000 series heandheld walkie talkie radio, these features are a big advantage f... Read more

RSGB Amateur Radio Video – a World of Possibilities

April 15, 2016 No comments

Amateur radio is a hobby with so many aspects it can be hard to describe – and difficult to know what to try first! We’ve tried to give a taster of ju... Read more

Amateur 47 GHz Allocation Avoids 5G Juggernaut in the US for Now, Worldwide Defense Continues

July 20, 2016 No comments

There’s good news regarding the future of Amateur Radio’s primary allocation at 47 GHz in the US. Still a test bed for point-to-point propagation expe... Read more

Vari-Ten Wire Antenna Tensioners

November 28, 2014 No comments

Our wire antenna tensioner is a high quality variable tensioning device that absorbs the shock on amateur radio antennas when the support trees sway i... Read more

Retevis RT83(GPS) 10W IP67 DMR Digital UHF Radio

June 20, 2018 No comments

Retevis RT83 with digital and analogue mode two way radio.   Using TDMA technology, designed with Tier II,AMBE++ vocoder, compatible with mototrb... Read more

Building A Multi-Band HF Dipole Antenna

January 15, 2017 No comments

  Read more

The March Edition of Digital QST is Now Available!

February 09, 2019 No comments

The March issue of Digital QST is now available for viewing on your desktop or laptop. Click here to view the issue. It is also available for reading... Read more

FCC Launches its New Website!

December 10, 2015 No comments

The FCC officially launched its long-awaited new website late on December 9. The Commission said its new site “features a more responsive design, a ne... Read more

AmateurLogic 76, Shutdown Pi, ISS SSTV, Modulation on a Scope

March 12, 2015 No comments

AmateurLogic A simple shutdown switch avoids trashing your Raspberry Pi’s operating system. SSTV from the ISS with Peter. George visits the Oran... Read more