Certainly this has come a long way since I started in the hobby with the 5th Ed back in 1982.
I have always seemed to have received it for a present everytime it has been revised over the years. This year was a rare exception, I was able to use my £5 members discount voucher towards the cost of purchasing it myself, for an early Winter read.
The fundamental wheels of electronics is always covered very well, and seems much improved. With Chapters on the Principles, Passive Components, Semiconductors & Valves, The Building Blocks Oscillators, Mixers and Amps etc. Good information for those starting out on the radio road, and the novice who is underway, this is very much a must! Even the experienced like myself who would like to refer back to the basics over time if not sure, will find it contains all the invaluable stuff one is likely to ever need!
Like always, it covers HF Receivers, Transmitters, Propagation, Transmission lines, Antenna basics along with Practical HF, VHF/UHF Antennas, and Microwave RX & TX, enough information to get you clued up for any Amateur test.
New content I have noticed in this edition is the Eamon Skelton EI9GQ Transceiver project, which featured in Radcom sometime ago. Here it is condensed into one chapter in abridged format, and is well worth the buy of the book alone! If you are interested in building a QRP transceiver, or something decent and uncomplicated that will work, by understanding the way he lays it all out in a simple format from stage to stage, this is certainly the section that one needs to read.
Also an excellent VLF chapter that also covers the new 472KHz allocation, along with a good Data & Computers in the shack section, including a small mention of the Raspberry PI & Arduino. Along with EMC & Power supplies, Morse Code, Test equipment, Construction & Workshop practice.
There is so much packed into its 864 pages and I have only touched on a small part. But it is a great reference and addition to the Shack.
This is the book that sets the benchmark and may be the only one you ever require!