Re: [VHFcontesting] inverters

[Zack Widup <w9sz@prairienet.org>]

There was an article in one of the ham magazines within the last decade on 
how to build a 12 VDC generator using an automobile alternator and a small 
engine (such as a lawn mower engine).
It looked like something that can easily be built from "junk" parts and 
would power a small station pretty easily. Probably very clean DC output 
but maybe noisy sound-wise. I haven't built it yet but might give it a 
try. It would definitely handle my QRP-portable operations.
73, Zack W9SZ

On Mon, 14 Apr 2008, Joe Serocki wrote:

> Inverters are hash generators. I hate them for that reason. I have also
> decided that a generator would work out best, and I got this way cool 1K
> generator, perfect for a rover, from Menard's on sale for $78! I had a big
> generator, but that's best left at home. Face it a 1K generator is enough to
> run a small shack, with a couple radios, with ease.
>
> Joe Serocki, N9IFG
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> -----Original Message-----
> From: vhfcontesting-bounces@contesting.com
> [mailto:vhfcontesting-bounces@contesting.com] On Behalf Of dbubke@juno.com
> Sent: Monday, April 14, 2008 12:25 PM
> To: k4gun@comcast.net
> Cc: k3uhf@hotmail.com; vhfcontesting@contesting.com
> Subject: Re: [VHFcontesting] inverters
>
> Steve,
>
> I am transitioning my modest rover setup, just like you, from loops to
> yagis. When I looked at the cost of upgrading my 14V power wiring to supply
> 25-35 amps (AWG 2 or larger)at 14 volts with minimal loss (0.2volt) and
> adding an inverter for a rotor, I decided it was time to take a generator
> and power supply along instead. This is untried in the field as yet.
>
> I ran some tests on RF output of my rigs, at voltages varying from 11.15 -
> 14.2 volts, and was surprised at the 25% reduction in RF power output at
> 13.8 volts and 50% reduction at 12.6 volts.
>
> Also tried a well known dc-dc booster to maintain 14 volts. It worked okay
> at loads of 15 amps or less. Not what I need.
>
> Just my 2 cents.
>
> Dan K6NKC
>
> -- k4gun@comcast.net wrote:
> OK... who has a "hash free inverter"?
>
> Steve
>
> -------------- Original message --------------
> From: frank bechdoldt <k3uhf@hotmail.com>
>
> > Most inverers will create RF hash along with most ac/dc converters for
> laptops.
> > You would need to ask wo has a hash free inverter on the market.
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