graeme wrote:
I am running my amstrad 901 cb and a zetagi 50w burner of of a 12 volt
computer power supply i figured this was good because it doesnt give
of any interference but should i by a proper power supply or is what
ive got fine for the job?

If it works then theres nothing to gain by changing. I am suprised you
do not get any interference. Most computers use switching supplies
which are well known to generate interference. They also lack much
filtering. IMHO most radio operators use linear supplies although there
are some good switchers available.