A soldering iron has not the heat to penetrate to the centre of a
stranded cable. This method works fine. Cored solder will work but
there's not really enough flux.
With small cables it takes seconds to heat the cable up with a
blowlamp.
This was at one time the only way to joint cables. There is no
possiblity of cables or screws loosening in any way. There is a
system for twisting the cable strands in larger cable obviously
unknown to you but it was all part of standard knowledge when I was an
apprentice.


Crimps are inferior in every way apart from saving time
and money.

So how come in the RS book of words they say approved for use by the
GEGB ?..

I've seen many crimps in Transmitter systems that use a lot more power
than what your average detached house does;!....
--
Tony Sayer