[Elecraft] Alinco switched-mode power supply from RSGB

[David Woolley (E.L)]

Stewart Rolfe wrote:
> 
> So I decided to take a chance on a switcher and bought the Alinco 
> DM-330MW on offer at the moment in RadCom for 79.95ukp (RSGB members) 

Interesting.  I was wondering about this one, although I was slightly 
put off by the "review"; it looked more like it was written by the 
distributor's marketing department... "we though this was so good we 
just had to offer it to you".

One question I have are whether I really need one.  I have a barefoot K2 
and can power it off an SLA battery, which I float on a linear supply I 
built in my youth (OC16 pass transistors!). Using indoor antennas in a 
flat means going to 100 watts, except in the early hours of the morning, 
might not be a good idea.

Another question is whether there is any realistic alternative that 
would satisfy my desire to build as much as possible myself, but without 
having the electronics knowledge to produce a complete design with 
safety and EMC considerations covered.

> across the bands has not shown up any obvious switching noise either.

Looking at reviews of other variants (the MW doesn't even appear on 
Alinco's web site) some people seem to have severe noise problems and 
some no problem at all.  It looks as though there may be some Friday 
builds out there.

Any views on quality, alternatives, and whether prices are likely to 
drop to the extent that just in time purchase is best, would be welcome.
> 
-- 
David Woolley
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