FW: [NLRS] RE: [VHFcontesting] controversy (generators)

[see message]

________________________________
From: dsc333 at hotmail.com
To: joeserocki at gmail.com; nlrs at mailman.qth.net
Subject: RE: [NLRS] RE: [VHFcontesting] controversy (generators)
Date: Wed, 30 Jul 2008 14:07:05 -0500








If you can run everything off 14 VDC, I suggest overdriving an automotive
alternator from a a small gas engine.  Most of these alts have good internal regulation, and
are inherently current-limiting.  I expect that with the addition of a current-operated
engine throttle, you will save a significant amount of fuel and noise.

The Ford alt in my car was a new pull, cost less than $100, and is rated at 130 amps.

The free cookie is the fact that the alt will give you its power at around 800 cps,
3-phase, in case you need higher voltages via transformers.

/Bill Schmitt, KE0XE



> From: joeserocki at gmail.com
> To: nlrs at mailman.qth.net
> Date: Wed, 30 Jul 2008 00:04:42 -0500
> CC: VHFcontesting at contesting.com
> Subject: [NLRS] RE: [VHFcontesting] controversy
>
>
>
> I agree with these guys.
>
> Hey, can someone look over these pix and offer any suggestions? I have to
> pull a trailer with a 5k generator on it, that small one under the tub won't
> even power one rig much less two with amps. It was a nice idea, but too
> small. Anyway, the pix are at http://home.comcast.net/~joeserocki/rover/.
>
> I am also interested in power suggestions. The power supply I am using
> offers 35 amps at 14v. Nearly 500 watts. With 25 amps being pulled by the
> radios, 350 watts, the generator cannot keep up. Since this is an analog
> supply, let's assume 50% efficiency, meaning it is sucking up 700 watts. The
> generator is rated at 850 watts. 850 watts for what, until it explodes? It
> drops to 100 volts at anything over 500 watts load, and that's not like it
> is unregulated, it tries to speed up but does not have the kahunas to keep
> up. So back to the statement, what recommendations for generators do you all
> have? I don't really want to pull the 5k, but she is nice and quiet and
> powerful, so maybe I should leave well enough alone. But it sure would be
> nice to have a smaller (2-3k) generator that was light enough to put on the
> back of the van in the rack rather than deal with another trailer.
>
> In case you are wondering, I don't like to run off the vehicle. It is not
> regulated at all well, and does not provide 14v like the power supply does.
> Add to that one of my amps requires 24v, but that's neither here nor there.
> Besides with 110v I can keep a small fridge in there :)
>
> 73
> N9IFG
>
> -----Original Message-----
> From: vhfcontesting-bounces at contesting.com
> [mailto:vhfcontesting-bounces at contesting.com] On Behalf Of Zack Widup
> Sent: Tuesday, July 29, 2008 11:52 PM
> To: Tom Staley
> Cc: VHFcontesting at contesting.com
> Subject: Re: [VHFcontesting] controversy
>
>
> Yeah, we have the ARRL UHF contest this weekend, the first weekend of the
> 10+ GHz contest two weeks after that, the Sept QSO Party coming up and the
> second weekend of the 10+ GHz contest.
>
> Lots of things to keep us busy and hopefully busy discussing!
>
> 73, Zack W9SZ
>
> On Tue, 29 Jul 2008, Tom Staley wrote:
>
>> I have to agree with Gregg here. Leave the political garbage to the
> upcoming
>> election, let's play radio!
>>
>> 73
>> Tom - K9TMS
>>
>> -----Original Message-----
>> From: vhfcontesting-bounces at contesting.com
>> [mailto:vhfcontesting-bounces at contesting.com] On Behalf Of Gregg Seidl
>> Sent: Tuesday, July 29, 2008 6:41 PM
>> To: VHFcontesting at contesting.com
>> Subject: [VHFcontesting] controversy
>>
>> Can we PLEASE quit this thread.Its getting quite old now.It does no good
> to
>> call this one a lair or that one a cheater.It is what it is.I wish we'd
> get
>> a nice tropo opening,then we could all get on the radio and make some
> QSO's.
>>
>> Gregg K9KL
>>
>>
>> _______________________________________________
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>> VHFcontesting at contesting.com
>> http://lists.contesting.com/mailman/listinfo/vhfcontesting
>>
>> _______________________________________________
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>> VHFcontesting at contesting.com
>> http://lists.contesting.com/mailman/listinfo/vhfcontesting
>>
> _______________________________________________
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>
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