Take care with inverters etc, QRM wise..

Even the "Pure Sinewave" types, employ a HF inverter internaly, and then form 
the sinewave by PWM methods, much like a class D power amp.   Hence the 
higher cost, as they have two types of high power switching systems in one 
box.

If not well filtered, you'll still experience a lot of unwanted hash on receive.

Take care too, safety wise.  OK, you lot stateside generaly only have the QRP 
110V AC types (<G>) but in the wrong place, that can still hurt, or worse.

73.

Dave G0WBX.

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