Dave:
> I have sent two emails to Solar Edge so far with no replies
Have you tried contacting Tefford Reed at: Tefford.Reed@solaredge.com or
Tom Simpson at: Tom.Simpson@solaredge.com? They are the field techs that
handle RFI cases. I've been in touch with them since February and they
always respond. If you don't get a response, I'll send a message in your
behalf.
> You may have to borrow a calibrated signal generator
I don't have one but I may know someone who does.
> regulations are written in terms of dBuV/m
I understand the regulations require specific units of measurement.
However, since I'm working directly with the engineers, I'd rather not
open up a can of worms and let it be known that their installation can
generate a certain level of dbuv/m. I've made it clear to that I will
NOT accept any noise and to that, their engineers assured me that they
can eliminate it altogether as they've done in the past.
In addition to RFI suppression that's already installed, the may add
metal conduit to shield the cables coming off the solar panels. Another
thing they plan to do is check the grounding.
I'll keep you posted.
Thanks Dave.
Tony -K2MO
On 7/14/2018 12:24 PM, David Eckhardt wrote:
I have sent two emails to Solar Edge so far with no replies (as
expected). I'd like to attach your video to yet another email, but
S-units are not regulatory talk. I need either dBm and/or dBuV. dBm
is good in that I can easily convert it to dBuv in a 50-ohm system.
The reason for this is that the regulations are written in terms of
dBuV/m which is field strength beasured in rigorous engineering
units. S-Units are nebulous, at best, in the amateur community. Is
there any way you can run a calibration of your S-Meter on the
frequencies you are recording the interference? You may have to
borrow a calibrtated good signal generator, if you do not already have
one. The new Icom radios (7300 and 7610) are very consistent with 3
dB per S-Unit and a good solid 10 dB increase for every 10 dB above
S-9. S-9 is also set very well at -73 dBm. I need such numbers to
relate the level of interference to the FCC (and EU) regulatory limits.
Something like the following is what I need. This is the calibration
of my 7300 D-Meter. Recorded data in all three columns are in dBm.
Left: no preamp Middle: Preamp 1 ON Right: Preamp 2 ON
Frequency of measurement is 14.200 MHz. Icom did a good job, although
no the old Collins standard of 6 dB per S-Unit, but they sure hit S-9
at -73 dBm well. My 7610 exhibits the same curve.
It would also be good to know the gain (real, not mfgr 'claimed' gain)
of your monoband beam and how far it is from the interfering source.
Dave - WØLEV
On Sat, Jul 14, 2018 at 1:17 AM, Tony <dxdx@optonline.net
<mailto:dxdx@optonline.net>> wrote:
All:
I recorded a short video that shows the type of solar panel RFI
I've been experiencing from my neighbors Solar Edge installation.
Solar Edge installed RFI suppression a few weeks ago which
unfortunately did little to reduce the level of interference. The
companies field engineer will be flying out to inspect the work
the installers did in the next week or two.
I thought this might help others to recognize solar panel issues.
See: https://www.youtube.com/watch?v=oiW758EyW_8
<https://www.youtube.com/watch?v=oiW758EyW_8>
Tony -K2MO
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