In case anyone's interested, I decided not to go with Solar City. I
think they would have done a fine job of installing a standard,
off-the-shelf solar system with a 20-year warranty that would have
worked fine as far as providing solar power. I was planning to buy it
outright rather than
Hi Jim,
On 7/19/2016 12:51 PM, Jim Brown wrote:
Remember that whether or not you hear more noise with the system running
will depend on how much OTHER noise there is in your neighborhood. Some
(many?) of us have background noise in the range of S8, others in the
range of S3. The difference is
On Tue,7/19/2016 10:23 AM, Tom Azlin W7SUA wrote:
We put in a 10KW array on our garage roof using two SMA 5000TL-US-22
inverters to grid tie. I could not see any difference in noise floor
or moving noise bands with the inverters running or with both the DC
and AC disconnected. Perhaps just
Hi Alan,
We put in a 10KW array on our garage roof using two SMA 5000TL-US-22
inverters to grid tie. I could not see any difference in noise floor or
moving noise bands with the inverters running or with both the DC and AC
disconnected. Perhaps just lucky? We used a local solar company that
In 2010 I had installed a 10kw system, about 400 feet down from my tower.
Before selecting SMA as the inverter manufacturer, I went to two
sites with my little Kenwood TF6A. It has am fm ssb bdcst to
uhf... using the am broadcast band and built in loop antenna, the
only noise I could
You're moving in the right direction, Alan. Study the QST article to
learn as much as possible about the concepts. Remember that RF is
radiated by CURRENT flowing on conductors that are not shielded, and
that differential current on a transmission line is not radiated.
Twisting helps that
I am now leaning on going with a local company rather than Solar City.
They quoted a higher price for a lower-power system, but because of some
convoluted accounting it will actually end up costing me less. And they
are at least willing to talk about adding some common-mode chokes.
Their
Sorry, I forgot to add my call to my post below. It's W1FV (John).
From: John Kaufmann [mailto:jkaufm...@alum.mit.edu]
Sent: Monday, July 18, 2016 9:50 PM
To: 'elecraft@mailman.qth.net'; 'n...@sonic.net'
Subject: Re: [Elecraft] OT: RF noise in solar photovoltaic system
My advice on Solar
My advice on Solar City is to avoid them at all costs. Their systems,
manufactured by SolarEdge, generate horrendous broadband RF noise. One of
my neighbors installed a Solar City system on his house and ever since, I've
been plagued with extremely bad RF noise, especially on 6m, whenever I beam
On 07/18/2016 01:42 PM, Joe Subich, W4TV wrote:
> Make sure they are quoting *everything.* When I looked into solar a
> few years ago, the quote specifically excluded building permit(s).
Good point. The contract states, "SolarCity will obtain any necessary
permits, at SolarCity's cost." So
Alan,
There's a local electrician here in Santa Rosa that I have used for a
couple of projects. He is presently installing a new 800A 3P service for
me. His prices are fair and I know he has done a number of PV
installations. He's accommodating & I'm sure would be willing to deviate
from a
Yep. Just like always, the devil is the details, and the large print
giveth while the small print taketh away. :)
73, Jim K9YC
On Mon,7/18/2016 1:42 PM, Joe Subich, W4TV wrote:
When I looked into solar a
few years ago, the quote specifically excluded building permit(s).
By the time the
I figure it should save about $1000/year in electricity bills and
they are quoting me $17.5 k for the system. That's a 5.7% return on
investment, or 8.3% ROI after the federal tax credit.
Make sure they are quoting *everything.* When I looked into solar a
few years ago, the quote
Thanks (Dick - K8ZBT) for a - very- interesting discussion about your solar
system.
It's likely more of us will follow suit.
Jim - W4RKS
--
>I installed solar panels on my roof last year,
>and have had no problems with noise from them.
>On the subject of Solar
rt <wes_n...@triconet.org>
To: elecraft@mailman.qth.net
Sent: Monday, July 18, 2016 6:54 AM
Subject: Re: [Elecraft] OT: RF noise in solar photovoltaic system
I would not be interested in working with Solar City.
http://watchdog.org/191409/congress-probes-solarcity/
On 7/18/2016 12:
Thanks for the pointer. I was already aware that their "0% down" lease
arrangement is not a very good deal, so I am looking at buying the
system outright. I figure it should save about $1000/year in
electricity bills and they are quoting me $17.5 k for the system.
That's a 5.7% return on
Alan,
I've worked with a large local PV installer to solve RFI problems, and I
can vouch for the fact that it can be difficult to de-noise PV
interters. the MPPT circuit is not analog and can turn the DC input
lines into hash antennas, and as you stated, the inverter itself can put
RFI on
My local solar companies look at me like I'm an alien when I try to
explain to them what I want They have ZERO actual knowledge... they
are building from a standard recipe...
I'm going to build my own... Do NOT discount the AC conversion at the
panel approach... it has MANY advantages, and
Alan I have information on the SOLAR install as I have done this and have a big
noise issue that I am combating still. I think this email will just go to you
please confirm and I will provide more information.
Scott AK6Q
On Monday, July 18, 2016 12:06 AM, Alan Bloom [via Elecraft]
I would not be interested in working with Solar City.
http://watchdog.org/191409/congress-probes-solarcity/
On 7/18/2016 12:05 AM, Alan Bloom wrote:
I am contemplating having a solar photovoltaic power system installed on my
roof.
Solar City is not interested in working with me on this -
Alan,
There are TWO major noise sources in solar systems -- the charge
regulator, which switches square waves, and the inverters. If the solar
vendor "will not work with you," run like hell in the other direction.
This is my advice for ANY kind of purchase that involves a known
engineering
I am contemplating having a solar photovoltaic power system installed on
my roof. There was an article by K1KP in April 2016 QST about the hoops
he had to jump through to reduce the noise level from his system low
enough that he could operate the HF bands.
My system should be less
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