[TowerTalk] Solar Array Noise

[Bill NY9H]

BEFORE I contracted for a system I did visit three sites wit my kenwood tf6a.
Had it on am broadcast as well as ham bands,,,holding it right next 
to the SMA 5 kw inverters. Had to get against the cabinet to hear anything !!!!
I figured since it was a German unit, it is subject ot EU / CE limits 
on radiation, probably more stringent than FCC / US.


At 01:43 PM 10/28/2014, Tracey Gardner wrote:

>Virtually all the inverters in use in the UK are 50Hz ones as they 
>are grid connected, so we don't generally get the problems that 
>you're talking about
>
>http://www.windandsun.co.uk/products/Inverters/SMA-Inverters/Sunny-Boy-Inverters
>
>73s Tracey G5VU
>
>
>----- Original Message ----- From: "Wilson" <infomet at embarqmail.com>
>To: <towertalk at contesting.com>
>Sent: Tuesday, October 28, 2014 4:23 PM
>Subject: [TowerTalk] Solar Array Noise
>
>
>>A little speculation:
>>I don't know, but doubt there are many actual 60Hz inverters out 
>>there and they would be horrendously costly at multiKW levels, not 
>>to mention inefficient.
>>Switch rates are tens of KHz, square waves, thus the noise, so the 
>>secret is shielding and choking.
>>Visit all the sites you can, with a pocket radio tuned to the AM 
>>band.  I expect you'll be able to tell which are noisy.
>>Your dealer should be able to take you to sites with the hardware 
>>he's selling.
>>And be SURE you understand your contract with your power 
>>company.  They won't pay you any more than they have to.
>>They will also give you a hard time about batteries, if you are in 
>>an area where they are required to pay premium rates for green power.
>>Charging your batteries at off peak rate and dumping them for green 
>>rate is NOT what they have in mind!
>>I know people who have batteries for backup, but they are locked 
>>out of the outgoing circuit somehow.
>>WL
>
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