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Re: [RFI] RFI from variable speed swimming pool pumps

To: James Jordan <k4qpl2@gmail.com>
Subject: Re: [RFI] RFI from variable speed swimming pool pumps
From: Jim via RFI <rfi@contesting.com>
Reply-to: Jim <jimk8mr@aol.com>
Date: Mon, 2 Jul 2018 21:06:30 -0400
List-post: <mailto:rfi@contesting.com>
At $.48/kwh does a properly designed (RFI-wise) solar system become a good 
economic idea?


73  -   Jim  K8MR



> On Jul 2, 2018, at 1:54 PM, James Jordan <k4qpl2@gmail.com> wrote:
> 
> Good question. Thanks but the power situation in Turks & Caicos is very 
> different from USA. Electricity is about $.48 PER KILOWATT HOUR! What’s 
> yours? Pool alone presently costs almost $300/month for power. A two speed 
> doesn’t have enough flexibility to optimize energy usage while providing 
> adequate circulation and filtering. The new VS drives are also inherently 
> more efficient so I’ll just have to deal with any RFI that results. Most of 
> our renters are not hams in any event and if push comes to shove we’ll switch 
> off or to the backup fixed speed pump during a contest etc. Hopefully line 
> filters and ferrites will keep things manageable. 
> 73,
> Jim K4QPL VP5M 
> 
> Sent from my iPhone
> 
>> On Jul 2, 2018, at 12:53 PM, Jim Brown <jim@audiosystemsgroup.com> wrote:
>> 
>> Why use variable speed controller at all?  Most systems that use motor 
>> controllers have 2-speed controllers as "standard equipment" and offer 
>> variable speed as an upgrade.  I suggest that you try to avoid variable 
>> speed.
>> 
>> 73, Jim K9YC
>> 
>>> On 7/1/2018 11:25 AM, James Jordan wrote:
>>> Other comments or suggestions?
>> 
>> 
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