You'll get a lot of comments on this.  Many like switchers.  I 
personOally prefer the old analog transformer supplies.  Many swichers 
are clean, some are not and put out spurious birdies in the ham bands. 
Some have a fan that runs continiously such as in my mfj switcher.  I 
tend to leave my rigs and supplies run 24 seven, so I see no need for a 
fan running, they shoould have put some kind of temperature control. 
I've got a couple Astron 70 amp standard supplies which i run a 2 meter 
and an hf amp on.  Very heavy, but my preference.  Also, I know how to 
repair standard regulated supplies, switchers are magic!!
73
Butch
WA0VJR
Node 3148
Wallace, ks.


n Wed, 2 Apr 
2014, Dave Basden wrote:

> I may be in the market for a new power supply for my Kenwood
> TS-590.  I hate to pay the price of a Kenwood PS-590, so am looking
> elsewhere.  It should probably be about 25 amps 13VDC.  Switching
> power supplies seem to be about half the price of the old
> standard.  They're also a lot lighter in weight.  There must be some
> advantage to the old standard supplies or they wouldn't still be
> available.  What is the difference and why should I consider the more
> expensive standard supply?
>
> 73,
>
> Dave, W7OQ
>
>