[TowerTalk] 40 meter dipole

[Leeson]

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 at 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