Peter,
Check out the IOTA power supplies. I have had the IOTA DLS-55 with IQ4
smart charger module for years. Sometimes it has run 24/7 for months. The
IOTA units are exceptionally RF clean and have excellent electrical
characteristics.
If you get the IQ4 smart charger module (or buy the supply with the
internal IQ4) it turns the supply into an automatic battery charger/power
supply. Connect a battery to the IOTA supply (fused) and a radio to the
battery (fused). The battery can remain permanently connected to the IOTA
and it will maintain the charge.
Another benefit is that the IOTA power supplies/chargers are designed so
their outputs can be paralleled with another like unit without
modification. That would double the current rating.
See the 12VDC IOTA units at this link. They are available from 15-90 amps.
http://www.iotaengineering.com/12vdc.htm
Read about the IQ4 smart charger 4-stage battery charging modes here:
http://www.iotaengineering.com/iq.htm
Ken
WA2LBI
On Wed, Aug 3, 2016 at 1:51 PM, Peter Laws <plaws0@gmail.com> wrote:
> On Wed, Aug 3, 2016 at 12:18 PM, Dave Cole <dave@nk7z.net> wrote:
> > Hi,
> > Can I get a few suggestions for a 12 V switcher that is quiet in the HF
> > spectrum? A friend needs one, and has asked about a quiet one...
>
>
> I have an (older at this point) Alinco switcher, the DM-330MVT, I
> think (old enough that it's not the one with the USB charging ports).
> Very happy with it. It has a knob that will move any hash you find
> off your frequency of interest. I've swished it around to see if that
> actually works, but the noise seems to be out of the amateur bands ...
>
>
> --
> Peter Laws | N5UWY | plaws plaws net | Travel by Train!
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