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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Hyper Engineering | Home
Hyper Engineering designs, manufactures, and exports single phase and three
phase electronic software-driven sof... | |
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From: "N2TK, Tony" <tony.kaz@verizon.net>
To: 'Kim Elmore' <cw_de_n5op@sbcglobal.net>
Cc: towertalk@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@contesting.com] On Behalf Of Kim
Elmore
Sent: Monday, January 15, 2018 9:29 PM
To: k3lr@k3lr.com
Cc: towertalk@contesting.com; john@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@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@contesting.com] On Behalf Of
Kim Elmore
Sent: Monday, January 15, 2018 9:11 PM
To: john@kk9a.com
Cc: towertalk@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@kk9a.com> <john@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@whidbey.com>, <towertalk@contesting.com>
Subject: Re: [TowerTalk] Kohler home generator hash?
From: "Tim Duffy" <k3lr@k3lr.com>
Reply-to: k3lr@k3lr.com
Date: Mon, 15 Jan 2018 13:59:15 -0500
List-post: <mailto:towertalk@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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