Ed, 

I've been using a Morningstar Prostar PS15M for several years, connected 
between my G.E. 72 watt solar panel and a bank of AGM batteries in the shack. 
The batteries run my K3, KX3, and KAT500, in addition to a 12v desk lamp. I 
have zero RFI from this device.

Jim Bennett / W6JHB
Folsom, CA

> On Jul 20, 2015, at 1:26 PM, Ed Gray W0SD <w...@triotel.net> wrote:
> 
> I have a MPPT controller and they produce a lot of radio interference.  From 
> what I understand PWM also cause radio interference.  I believe that the 
> older "diversion" controllers are quiet.  Normally they would waste a lot of 
> energy but if one were running enough equipment so the battery was being 
> drained faster than it was being charged I assume there would not be much 
> energy waste.
> 
> My question is those of you who operate with a fairly good size panel and 
> need a solar controller what do you use that produces no radio interference.  
> I am looking at what would be set up for a RV or a good sized boat or a day 
> or two portable operation for something like the US Island QSO party coming 
> up.  We would want to run 100 watts with the K3.
> 
> This would be a 12 vdc system with something in the range of 100-140 watt 
> panel.  Probably two 6 vdc deep cycle batteries.
> 
> Ed W0SD
> 
> 
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