Raleigh Technium bikes, even up to the 460 level, had rather poor-quality spokes, which in my case broke occasionally despite thorough equi-tensioning, something that a bike-shop-trued wheel usually doesn't get the benefit of.

The solution is a new rear wheel, since the front wheel spokes tend to last many times longer. A high-quality used wheel might also be suitable if inspected thoroughly.

If your husband is on the heavy side or is doing higher mileage, then any new "economy-type" generic wheel would benefit greatly from a thorough precision tensioning, and the hub might best be a cassette-style hub of the correct width. A new chain and cassette would then likely be also needed.
The exact spoke tension will depend on the particular rim that the new wheel has, and the work done by an experienced wheel-builder.