[Elecraft] OT: Whole House Generator

Fred Jensen k6dgw at foothill.net
Thu Sep 7 17:40:59 EDT 2017


Hmmm ... for over a decade we used a stock gasoline Generac [7.5 KVA 
IIRC] at the Alpine County camp for the Cal QSO Party.  Acoustically 
noisy [RF quiet] but ran fine and the various transceivers we used over 
the years never complained. With the tube amps, PF ran around 0.9 or so, 
with the KPA500 it ran around 0.8 or so.  We also had a Honda inverter 
[2 KW], used primarily in econo-mode to run the electric blankets at 
night [very quiet idle].  It was RF-quiet too, just struggled some if we 
tried to run the station on it.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 9/7/2017 1:54 PM, Mel Farrer via Elecraft wrote:
> I tried to get more information on the "syntergy" process.  I know of no electrical design of the alternator that allow a non distorted change in frequency of the output,  However a method of load sensing and a planetary transmission with speed selection could do the job of letting the motor run slower while the alternator is at constant speed.  The 5-12 minute load sensing could be the process of the speed selection so that no load is affected.  Hummm interesting.
> I have a 35 KW diesel Generac and never looked back.  It uses the old governor method of adjusting engineer fuel/RPM to load. Less load less fuel used.  OH well.
> Mel, K6KBE
>
>        From: Doug Hensley <w5jv at hotmail.com>
>   To: Elecraft List <elecraft at mailman.qth.net>
>   Sent: Thursday, September 7, 2017 1:18 PM
>   Subject: [Elecraft] OT: Whole House Generator
>     
> If you want to respond to this, please respond privately to me and NOT the list.
>
>
> I am going through the process of choosing a whole house home generator and what caught my ey in the process was a new generator by GENERAC called "Syntergy" which uses a new three-vein generator and produces a relatively clean sine wave.  So clean, GENERAC claims less than 1% harmonic distortion, a level virtually undetectable to the user.
>
>
> Has anyone studied this unit and made any conclusions about it?  Their standard unit produces a minimum of 10% harmonic distortion and they warn some communications services might become unuseable.
>
>
> Again, respond to me privately:  <<  w5jv @ hotmail.com  >>.
>
>
> Thank you,
>
>
> Doug W5JV
>
>
>
>
>
>
>
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