[RFI] SolarWord PV modules, Enphase solar micro inverters and monitor system

Wed Oct 5 05:27:48 PDT 2011

SolarWorld is a client of my firm, so I'll disclaim that I am not speaking 
in any professional capacity.  SolarWorld used to have a ham as one of the 
main design engineers and he actually did test the designs to look for 
interference and RFI generated by the panels....

Cannot attest to panels produced by other companies.

73 Rich NN3W

----- Original Message ----- 
From: "K1TTT" <K1TTT at ARRL.NET>
To: "'Thatcher Deane'" <thatcher.deane at gmail.com>; "Rfi" 
<rfi at contesting.com>
Sent: Wednesday, October 05, 2011 6:55 AM
Subject: Re: [RFI] SolarWord PV modules,Enphase solar micro inverters and 
monitor system

>I have 28 of the Enphase inverters model m190-72-240 and they are perfectly
> quiet.
> http://wiki.k1ttt.net/2010-Maintenance-and-Upgrade-Blog.ashx#solar
> http://enlighten.enphaseenergy.com/public/systems/BpbD5251
> http://www.k1ttt.net/misc/pv.pdf
>
> The plc they use is relatively low speed bursts at 144khz, I couldn't find
> any interference from that anywhere either.  They use it to collect the 
> data
> from the inverters back to their base unit.  The base unit must be plugged
> into your internet router to make use of the web monitoring features.
>
>
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://wiki.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://k1ttt.net
>
>
>> -----Original Message-----
>> From: Thatcher Deane [mailto:thatcher.deane at gmail.com]
>> Sent: Wednesday, October 05, 2011 04:36
>> To: RFI at contesting.com
>> Subject: [RFI] SolarWord PV modules, Enphase solar micro
>> inverters and monitor system
>>
>>
>> Hi we are (still) considering installing a photo-voltaic
>> system with a
>> vendor who uses this equipment
>>
>> SolarWord PV modules, Enphase solar micro inverters and monitor system
>>
>> I've previously received advice from subscribers to this mailist that
>> SolarWord panels
>> and Enphase inverters do not cause RFI in the HAM bands.
>>
>> Has anyone heard differently?  Specifically for these items:
>>
>> SolarWorld Sunmodule SW 255 mono / Version 2.0
>>
>> Enphase inverters (model unknown)
>>
>> Enphase 'Envoy Communications Gatway' which 'uses advanced powerline
>> communications technology, without additional wiring or wireless
>> configuration. '
>>
>> This last sounds suspicious.
>>
>> 73, AH6SZ
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>
>
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