After completing my 6.6 kW solar plant, and being initially bitterly
disappointed with the HF noise it generated, is to recommend only the use of
equipment that has an FCC Part 15 B rating. Also, if possible, keep your
antenna as far from the plant as you can. I won't go into all the boring
details of how I got the noise down to an acceptable level, but it nearly
doubled the effort. My chargers and inverters do not have any FCC rating -
big mistake.
-Doug
W6DSR
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Lizeth Norman
Sent: Saturday, October 25, 2014 4:34 PM
To: towertalk
Subject: [TowerTalk] keeping the bands quiet: 12 KW PV array
Hi all,
Am getting ready to work with a pair of engineers and spec out a 12 KW
installation. There will be 3 poles with 14 modules on each pole. The
inverters will be at a central location in the panel area, with the AC
running 70' to the service panel.
Have spent several evenings reading various mailing list archives as well as
many other sources regarding RFI/EMI as it applies to PV arrays and ham
radio.
I've taken three things away from my research. One is spend the money on an
inverter that has a transformer in it. The second is to run as much (both AC
and DC) in conduit as possible. The third is to take care when designing the
grounding. (I WILL be using Cadwelds one
shots.)
Does anyone have any experience with PV's regarding RF noise and mitigation
strategies?
By the way, I think the whole thing can be sourced from made in USA parts.
What a concept!
Thanks,
Norm n3ykf
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