[Drake] L-75 output update
Tony Sokol
tonysokol at sbcglobal.net
Sun Nov 28 20:16:23 EST 2004
OK, this is exactly what I needed. From what I am hearing, putting
the drive down around 60 watts where it belongs, I seem to be getting
what I should except for the drop off up on 20 which may be a little
premature. I would think it would start dropping off on 15 and above
but not 20. Never the less here are a the results of a little
experiment I just ran:
Frequency: 3800
Watt meter (s): Bird 43 with 250 watt (for exciter) and 1000 watt (for
L-75) slugs.
Drake WH-7 (Tracked remarkably close to the Bird)
Drive Grid current Power Out Plate Voltage
120W 160ma 1000+W 2500V
60W 90ma 700W 2600V
From this, it looks like I am right in the ball park. I should also
note that I did retune for each power level to make sure everything was
in resonance.
Kind of a fun project for a lazy Sunday afternoon. Thanks for all
of the comments.
73
Tony - W9JXN
PS: I hope my little chart stays lined up when this posts.
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