[RFI] Aims 5000 Watt MSW Power Inverter

kd4e doc at kd4e.com
Mon Sep 15 13:36:40 EDT 2008

This has nothing to do with Amateur Radio, I am sorry
if I was unclear.

The primary purpose would be on the rare occasion where
a tropical storm or tornado knocks out power.

It would power the fridge or a small ac or lights until
power is restored.

Since we already maintain the engines in two vehicles
and they have large fuel storage it seems inefficient
to also maintain a generator for rare use.

>> They draw a LOT of current at 13.6 VDC.  In this case, at 5000 watts 
>> output @ 90% efficiency, the input draw will be 408 amps!!!  
> I'll second all of Dale's comments, and add this. What is your final 
> objective? If you could be happy with 500-600 watts RF output on the HF 
> bands, I strongly suggest that you look at a power amp like the Ten Tec 
> Hercules II that will be very happy supplying full output pulling 70-80A  
> from a 13.8V DC source. It takes only about 25W to drive to full power, 
> so the transceiver will add only another 10A. And that's keydown -- 
> average current will be a lot less. You could probably buy that amp used 
> for about what it would cost to buy an inverter and clean it up enough 
> to actually use it in an HF station. Yes, legal limit power is another 4
> + dB up from there, but at what cost? If you can't hear 'em, you can't 
> work 'em!  I don't know what other DC amps are on the market, but I'd 
> bet that there are others. I have a Herc II. It's a very nice amp. 
> 73,
> Jim K9YC


Thanks! & 73, doc, KD4E
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