Note: All the products described on this page are out of production. Spilsbury Communications no longer exists. This information is presented for historical interest only.

The SBX-11A portable 10 Watt HF SSB radio was for some time the primary means of communication in Canada's North.

I did not have any involvement in the design of the SBX-11A. By the time I moved from Racal Research in the UK to Racal Canada the product line had been extant for many years. I occasionally worked on specifying alternate sources for obsolete components; I was involved in a project to transfer production to a contract manufacturer (which did not take place, but did result in improved internal documentation); and I was involved in a feasibility study for its replacement (which was never developed). However, I did walk through the factory where they were assembled every day.

Sales Brochures

• SBX-11A Brochure, Sept 1984 (PDF, 0.8MB)
  
• SBX-11A Brochure, Oct 1997 (PDF, 2.5MB)
  

Service Manuals

• SBX-11A Service Manual, Sept 1984 (PDF, 4.6MB) (from Norm VE3CZI)
• SBX-11A Service Manual, Sept 1997 (PDF, 0.6MB)
• AC-62C Squelch Kit Installation Manual (PDF, 0.8MB)

• The 1984 manual was clearly typewritten. By 1997 the text had been re-typed into a word processor, from which the manual was printed. The most obvious result of this is a number of transcription errors (esp. "metre" instead of "meter" in many places).
• The 1984 manual has an Accessories section which is missing from the 1997 one.
• There are some differences in the parts lists, mostly the result of component replacements and substitutions over the years, but also due to circuit changes.
• The 1984 manual has issue 5 schematic as the last page; the 1997 has issue 8.
• The 1997 manual has a general layout diagram which is not present in the 1984 one.

Papers and Articles

• SBX-11 Technical Overview internal Spilsbury paper written in June 1989

Photos

A set of four 9.5in x 8in black and white prints produced in 1977(?) of an early SBX-11A, presumably for promotional and documentation purposes.

There are quite a few photos of the SBX-11A in action in various parts of the world in my Racal Canada photo collection, and many photos of the factory and the people who worked in it in the Spilsbury collection.

Other Information

• SPARC Society for the Preservation of Antique Radio in Canada.
• Spilsbury & Tindall information from SPARC.
• Spilsbury's Coast, Jim Spilsbury's autobiographical account of his life on the west coast, including the formation of the radio business. Co-written by Howard White, published by Harbour.