On 8/14/2019 9:57 AM, Gary Smith wrote:
As I'll be buying this sight unseen from
the web, any suggestions of an inexpensive
controller and panel that is known to be
essentially RFI clean & reliable?
YES, and some installation advice. First, panels are not noisy, but
charge controllers are notoriously noisy. The only ones I know of that
are not are the MPPT controllers made by Genasun. They are only made for
relatively small systems like the one you are probably thinking of. They
have several models, designed for different panel voltages, charge
currents, battery voltages, and battery type. I use them in my home
station and for portable operation on FD, CQP, and 7QP county expeditions.
The installation part consists of 1) using only twisted pair for the
entire circuit consisting of battery(ies) and panel(s); 2) carrying both
conductors through each part of that series circuit, breaking on
conductor to add the series element; and 3) if antennas are very close
to this wiring, adding a serious common mode choke, following the
recommendations in
http://k9yc.com/2018Cookbook.pdf for #12 THHN or NM wire for the bands
where the antennas are very close.
You will also want a good choke on the output of the generator. There's
a design for a very good one on page 23 of the Jan 2019 revision of
k9yc.com/RFI-Ham.pdf
73, Jim K9YC
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