Frankly, I have a hard time understanding how the TA-33 could only
have about 1 dB gain, and still have front to back.
Somewhere almost 5 dB (69%) of the applied power is missing.
The TA-33 will handle 1500 watts or more of CW power on 20
meters without failure. If 1035 watts is being lost in the traps each
trap would have enough heat concentrated in the inductors to melt
the forms. This would be especially true since losses in the driven
element would amount to about four times the loss in the outer two
elements, current in the elements of any three element yagi is not
anywhere near equal.
Can anyone explain how an antenna can have F/B and lose 69% of
the applied power without severe localized heating in the
traps...especially when loss can not be evenly distributed in all the
traps??
> Extra Extra Mr Steve. I meant the TH3 is the perfect Field Day Beam and
> not the TA3. I have no idea how that rated in your report but I can tell
> you W0EF is blasting through lots of FD contacts with the TH3's and
> Explorer 14's! Watch for us in the top 10% of the most competitive
> category, 2A!
>
> 73
> Mike
> K0BUD
73, Tom W8JI
w8ji@contesting.com
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