Yep, it works as you suggest, have used it here and in HC8. Because the
40m band is a narrower percentage width, it takes only a half-wavelength
50-ohm line, plus the quarter-wave transformer, to cover the band.
For history, see
http://lists.contesting.com/archives/html/Towertalk/1997-11/msg00695.html
For references, see
http://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec2018/Leeson.pdf
"Give it a try."
Dave, W6NL/HC8L
On 10/2/23 2:42 PM, john@kk9a.com wrote:
I agree that loaded center fed 40m rotatable dipole is an effective antenna
, even on portions of the band where the SWR is higher.
On 80m many people use a 1 WL section of 50 ohm coax following by a 1/4 WL
section of 75 ohm coax to make their dipole cover both the CW and SSB
segments of the band. Obviously this does not change the actual antenna
feed point SWR but it may make the radio, amp and operator happier. I
wonder if anyone has used this type of broad band transmission line match on
40m?
John KK9A
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