The new version of the VHF Handbook 7.50 covering VHF, UHF and Microwaves is now available for download
The handbook has chapters on Band Planning, Contests, Propagation Research, Operating Procedures and Satellites. Page 116 specifies a standard for the use of circular polarization defining which way helical beam antennas should be threaded.
Recommendations proposed in the Vienna meeting 2016 and approved by the Executive Committee meeting in Brussels as well as all relevant decisions of the IARU R1 Conference 2014 in Varna Bulgaria are included in this version.
The handbook is available at