*OK, Tony, I won't open the can of worms!! I promise. I totally
understand. *
*I did not have the names or emails of the two service techs with whom you
have been dealing. I probably better let that alone, since you have
established a repore with both of them. I don't want to get in the way.
They don't need to know there is a level of emissions that FCC permits.
I'll hold back, but please keep me in the loop*
*Dave - WØLEV*
On Sun, Jul 15, 2018 at 8:00 PM, Tony <dxdx@optonline.net> wrote:
> 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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>>
>>
>>
>>
>> --
>> *Dave - WØLEV
>> *
>> */Just Let Darwin Work/*
>> */Just Think/*
>>
>
>
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--
*Dave - WØLEV*
*Just Let Darwin Work*
*Just Think*
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