[TowerTalk] Kohler home generator hash?

[Patrick Greenlee]

Tony, Yes some variable speed motors (vice multi-speed) can cause 
interference.  I lucked out with my new variable speed one HP air 
handler and don't detect any interference. Likewise with the other two 
older variable speed air handlers.  I can't detect a difference in noise 
with all three running vs none running.

Patrick        NJ5G


On 1/16/2018 6:23 AM, N2TK, Tony wrote:
> 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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>>
>>
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