ists.re-wrenches.org] On Behalf Of boB Gudgel
Sent: Wednesday, July 15, 2009 8:12 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Inverter AM Interference
> solar...@aol.com wrote:
>
> This is a brand new 5000 US. EMT on all dc runs. The radio is a
> BOSE...and is 27 feet away. Th
The Sun Since 1979
Solar Discussion Forum: http://www.wind-sun.com/ForumVB/
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- Original Message -
From: "Exeltech"
To: "RE-wrenches"
Sent: Thursday, July 16, 2009 10:02 AM
Sub
Excellent Dan! The first thing I would do in most cases is your #5.
Increasing the RF signal to the receiver will usually overcome the
relatively low level RFI. As an amateur operator (KB5HMU) I sometimes
have to deal with close RFI at 160 meters, 1.8 to 2kHz. I have a
tunable dipole with p
Interference from inverters will always be an issue. It's a difficult topic
for many to understand .. and equally difficult to reduce. Note you can reduce
.. but not eliminate the interference.
To complicate things, the farther a radio is from the transmitter, the more
difficult this issue w
[RE-wrenches] Inverter AM Interference
At 09:48 PM 7/14/2009, you wrote:
2) Replace your 15-year old modified square wave inverter with a true sine
wave model. (OUCH! It's really a new SMA?)
The SMA Sunny Island requires metal conduit for the battery cables, for RFI.
Drake C
solar...@aol.com wrote:
It disappears when the breaker is thrown.
Pat Redgate
OK, is that the AC breaker or the PV input breaker ?
How about when you throw the PV input breaker (when not MPPTing) ? Does
that help ?
i.e. We know now that it's the inverter's auxiliary power supply, but
is t
It disappears when the breaker is thrown.
Pat Redgate
In a message dated 7/15/2009 5:11:58 P.M. Pacific Daylight Time,
b...@midnitesolar.com writes:
> solar...@aol.com wrote:
>
> This is a brand new 5000 US. EMT on all dc runs. The radio is a
> BOSE...and is 27 feet away. The inter
solar...@aol.com wrote:
This is a brand new 5000 US. EMT on all dc runs. The radio is a
BOSE...and is 27 feet away. The interference is runs 24/7... so it
must be AC related.
Does the radio noise go away when you completely disconnect the SMA
inverter ?
boB
__
Hello again:
This is a brand new 5000 US. EMT on all dc runs. The radio is a
BOSE...and is 27 feet away. The interference is runs 24/7... so it must be AC
related.
I found out today that roam (or freedom) phones do not work at this home.
Since it was built with wire mesh in the walls - t
At 09:48 PM 7/14/2009, you wrote:
2) Replace your 15-year old modified square wave inverter with a
true sine wave model. (OUCH! It's really a new SMA?)
The SMA Sunny Island requires metal conduit for the battery cables, for RFI.
Drake Chamberlin
Athens Electric
OH License 44810
CO License 37
email and
delete this message from your system.
_
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of David G Katz
Sent: 15 July, 2009 11:11
To: RE-wrenches
Subject: Re: [RE-wrenches] Inverter AM Interference
I have alway
I have always had problems with AM radio in my remote home. I have more
problems when it is connected to AC or DC for power. Try running it on
batteries. I switched to a CCrane internet radio and now I get 1000s of
stations very clear, but you need broadband internet.
David
David Katz
Pres
Hi Jay,
About 18 months age (?) I inquired on the list about radio interference
from a somewhat early version of the Magnum MS4024 which I put in my
off-grid home (replacing an SW4024 which was fried by an amazing lightning
strike). Never had any radio interference that I noticed with the SW.
Ma
I will try the AM on the Magnum 4024 and on the generator when i get to the
shop, much later today.
I must admit that I have not tried it in the last few years, I just accepted
it would not work well !
Bob
On Tue, Jul 14, 2009 at 10:30 PM, jay peltz wrote:
> Anybody heard of any interference fr
I am a fan of talk radio and have always had a problem when the car gets
within 30' of the inverter, the brand seems to make no difference. The house
radio never had a chance.
I don't know if it applies to grid tie only inverters or not but suspect it
might be the same.
Interested in an easy cure
We see the most AM radio interference with Fronius inverters, but the distance
must be close. I listen to AM talk radio most of day and it is usually on in
the car when I leave the office. My car is parked right next to our office on
the exterior side of the garage that has the Fronius Inverte
Anybody heard of any interference from a Magnum or a magnum meter?
thanks,
jay
peltz power
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Ouch! From a brand-new SMA? I thought AM interference was mostly
banished when the Trace SW series was introduced.
My checklist when I consult (and this question is fairly common), these
are in no particular order:
1) Be absolutely sure it's the inverter causing the problem; I've seen
lots o
that, SW or not."
He doesn't say what surge arrestor he uses, but hopefully this helps
your customer.
DKC
Original Message ----
Subject: [RE-wrenches] Inverter AM Interference
From: solar...@aol.com
To: re-wrenches@lists.re-wrenches.org
Date: 2009/7/14 20:48
Hello:
Has a
Hello:
Has anybody got a fix or a way to filter out inverter generated AM (
520-700 kHz MW) noise? I guess it's never been a problem in the past because
our customers must not have been fans of AM radio. Plus, I always approved
of the fact that it wiped out reception for ditto-heads.
We
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