[TowerTalk] Kohler home generator hash?

Patrick Greenlee patrick_g at windstream.net
Tue Jan 16 16:12:25 EST 2018 

Also of interest to folks interested in soft start for heat pumps (or 
other equipment) are load shed modules that (in my case) allow a third 
heat pump to start up if the load on the generator is low enough to not 
overload by starting the heat pump.  If I have the generator loaded too 
near capacity the load shed module prevents power being sent to that 
heat pump.  The load shed module also checks for proper voltage and 
frequency before it will send power to its load (a heat pump in my 
case.) Of course load shed modules can be used for other purposes, not 
just for my purpose.

Patrick        NJ5G


On 1/16/2018 11:51 AM, Kimberly Elmore wrote:
> There are a number of what appear to be equivalent units out there. The ones with which I have experience come from Hyper Engineering: Hyper Engineering | Home
> I installed them myself -- it's straightforward. The instructions say that it takes several start cycles for the unit to optimize the start load, so it seems there are some adaptable characteristics ("smarts") that are part and parcel of them. These ran roughly $250 each and, as a bonus, I get zero RFI out of them.
>
> I don't have any financial interest in the company or any of their distributors; I think I got mine from Johnstone Supply, but I'm not certain of it. Simply know what these units do and how well these particular units work, so I can't vouch for any of the others.
> 73,
> Kim N5OP
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>        From: "N2TK, Tony" <tony.kaz at verizon.net>
>   To: 'Kim Elmore' <cw_de_n5op at sbcglobal.net>
> Cc: towertalk at contesting.com
>   Sent: Tuesday, January 16, 2018 6:23 AM
>   Subject: RE: [TowerTalk] Kohler home generator hash?
>     
> Just learned of something new to me - soft start for air conditioners. As I will be replacing both air handlers and compressors this year and I have a whole house backup NG generator, you have tweaked my interest. Where do I find more info on them?
> On a side note I heard mention that variable speed air handler blowers can cause hash compared to quiet fixed speed blowers. Any truth to that.
> Tnx for any feedback
> N2TK, Tony
>
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Kim Elmore
> Sent: Monday, January 15, 2018 9:29 PM
> To: k3lr at k3lr.com
> Cc: towertalk at contesting.com; john at kk9a.com
> Subject: Re: [TowerTalk] Kohler home generator hash?
>
> Hi Tim,
>
> I’m a bit surprised they aren’t offered as a standard add-on. I was pretty skeptical until I installed them and when I saw the difference they made. I was pretty much blown away!
>
> I’d never considered the issue for cell sites but now that you mention it, of course!
>
> 73,
>
> Kim N5OP
>
> "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith
>
>> On Jan 15, 2018, at 20:19, Tim Duffy <k3lr at k3lr.com> wrote:
>>
>> Hello Kim:
>>
>> Excellent post about soft start on your air conditioners. That is
>> important on generators and also for the AC mains as well. All six
>> (we use two 3 ton units for shack cooling) air conditioner units here
>> at K3LR have soft starts and there is no drag on the AC power when they come on line.
>>
>> I learned about soft start air conditioners early on when constructing
>> cellular networks. Without soft start the generator voltage drop would
>> cause significant issue for the sensitive network equipment.
>>
>> 73
>> Tim K3LR
>>
>> -----Original Message-----
>> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
>> Kim Elmore
>> Sent: Monday, January 15, 2018 9:11 PM
>> To: john at kk9a.com
>> Cc: towertalk at contesting.com
>> Subject: Re: [TowerTalk] Kohler home generator hash?
>>
>> FWIW, we have a small General 14 kW NG air-cooled generator with a
>> manual transfer switch. It's RF quiet at any frequency I can hear,
>> from the BC band through 450 MHz.
>>
>> As an aside, we had trouble starting our air conditioner units with it
>> (4 ton and a 2 1/2 ton units). The start current requirements were
>> well beyond what it could reliably handle. But, last summer I
>> installed some true soft-start modules (made in Australia). The
>> difference was staggering: I can now start both units simultaneously
>> without problem on generator power and lights no longer dim when the units start on commercial power.
>>
>> Kim N5OP
>>
>> "People that make music together cannot be enemies, at least as long
>> as the music lasts." -- Paul Hindemith
>>
>>> On Jan 15, 2018, at 19:55, <john at kk9a.com> <john at kk9a.com> wrote:
>>>
>>> That is a monster! It is great to hear that they are quiet and you
>>> can
>> keep
>>> all of your operating positions manned during a power outage. My
>>> power blipped off a half dozen times in the RTTY Roundup last week
>>> but luckily
>> it
>>> came right back on.
>>>
>>>
>>> John KK9A
>>>
>>> To:    "'Donna Hinshaw'" <ag6v at whidbey.com>,    <towertalk at contesting.com>
>>> Subject:    Re: [TowerTalk] Kohler home generator hash?
>>> From:    "Tim Duffy" <k3lr at k3lr.com>
>>> Reply-to:    k3lr at k3lr.com
>>> Date:    Mon, 15 Jan 2018 13:59:15 -0500
>>> List-post:    <mailto:towertalk at contesting.com>
>>> Hello Dana
>>>
>>> I installed a 48RCL with transfer switch 3 years ago. It is totally
>>> RFI quiet. That was one of the qualifiers.
>>>
>>> It has been an awesome machine. 48 KW load tested.
>>>
>>> 73
>>> Tim K3LR
>>>
>>> _______________________________________________
>>>
>>>
>>>
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