[VHFcontesting] Inverters

[David Erickson]

OOps.. Forgot to add the link

http://www.powerstream.com/in3s.htm

73's
Dave
W3DIO (K3LFO/R team)


> Here's a direct link to the 600 watt True Sine Wave Inverter we are using
>  in our rover.
>
> 73's
> Dave
> W3DIO (K3LFO/R team)
>
>
>
>> Hey fellow Rovers,
>>
>>
>>
>> Good power systems and power management are the key to successful
>> roving. Unfortunately, I've been fighting the Inverter noise problem for
>> a couple of years now.  We've needed an Inverter to run our computer as
>> well as the ac powered rotators. I've tried several cheap, modified sign
>> wave units.  They all emit unstable spurs and hash all over 6m and often
>> on 2m and up as well.  Every time you turn the beam the hash level
>> increases and the spurs get broader.  We have tried everything short of
>> building a sealed and filtered box for it to go in like W3IY (sk) did.
>> Bill had said
>> that he still had a little hash due to the less than pure sign wave
>> output.
>>
>> I've seen many very high priced inverters that probably would work well
>>  but at $ 1000.00 - $ 2500.00 the cost was prohibitive.
>>
>> Finally I ran across an ad from Power Stream advertising the
>> PST-S600W-12, a Low Cost, Low RFI inverter.  Checking further they
>> claimed to have a pure sign wave output as well as well shielded and
>> filtered switching circuit.  I decided to order one but the web site
>> said they were not available "at this time".  After checking back for a
>> couple of months I called them up and they took my order over the phone.
>> It cost
>> around $ 216.00 plus shipping.
>>
>> After installing it in the new rover we spent several hours testing
>> under different loads and on different bands and there isn't a sign of
>> RFI
>> anywhere!  The hash from the rotator running wasn't present either.
>>
>>
>> Even though we now run a generator this allows us to run on DC power
>> while under way as well as when in a generator restricted camp site.
>>
>> http://www.powerstream.com/Wire_Size.htm
>>
>>
>>
>> I hope this helps some of you out.
>>
>>
>>
>> 73,
>>
>>
>>
>> Jim K3LFO/Rover
>>
>>
>>
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>>
>
>
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