I've been using the "DX settings" for the TH7. I found an old posting to
the the list:
http://lists.contesting.com/_towertalk/1997-August/008484.html
quote:
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Later, Hy-Gain developed new dimension called "DX-settings" to
improve the lower end of each band. In a discussion with
Roger Cox at Hy-Gain he has suggested an additional setting to
emphasize CW at an even greater sacrifice in VSWR at the top
of the bands.
I have summarized the figures below and will try the CW
setting on my TH-6/TH-2 conversion to a TH-7. If these
check out well, then I will incorporate the changes into
my four other TH-7s to confirm the repeatability.
The only chages that need to be made are to the two driven
elements. The following changes represent an evolution
of settings.
section original suggested Hy-Gain's Hy-Gain's (Cox)
number settings by some DX settings CW settings
RDE-2 31" 32" 33" 34"
FDE-2 40" 41" 42" 43"
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That is, add another inch to the DX settings. Has anyone tried this? If so,
what is the shifted SWR bandwidth?
Thanks & 73, Steve WB6RSE
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