I don't think there's a lot of disagreement between G8WRB and myself. We
seem both to be very dubious about the accuracy of using an oscilloscope, and
recognise the problems with calorimeters. Incidentally, at Marconi's the power
was measured with a water cooled resistor: it was about a 50 watt resistor in
air, and if you got a bubble in the water, at 30kW, it died 'just like
that!'. I suspect you really need a constant head apparatus, which at gallons
per
minute is possibly but not necessarily wasteful, and messy.
And for amateur purposes, for 99% of the time a Bird 43 is good enough
anyway!
73
Peter G3RZP
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|