We recommend making a Pi filter consisting of a 50 uH 30 amp medium Q
coil and .1uF 100+ volt disc capacitors. Insert the Pi filter in the PV+
line. Wire with short direct leads to the control. Helps a lot. Not perfect.
Frank Lewon
BZ Products Inc.
7914 Gravois Road
St. Louis MO 63123 USA
314-644-2490 www.bzproducts.net
On 8/31/2010 7:00 PM, Larry Crutcher wrote:
Does anyone know of a large MPPT controller that does not produce RFI?
Specifically, customers that are SWL, AM or amateur radio operators
need RF quiet time during the day while operating or listening. All
the controller I have installed make some noise. The Outback MX60 in
my RV decimates every 40 kHz or so with broadband noise from 160
meters and up.
Does anyone know how the Xantrex SW, Tristar MPPT or Apollo do with RFI?
Many thanks,
Larry Crutcher
Starlight Solar Power Systems
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