[TowerTalk] Kohler home generator hash?

Tim Duffy k3lr at k3lr.com
Mon Jan 15 21:19:59 EST 2018

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. 

Tim K3LR

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Kim
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
> 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
> 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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