[TowerTalk] 160-m. Inverted L Question

Mike Fatchett W0MU w0mu at w0mu.com
Wed Dec 12 19:28:57 EST 2007

I do not believe an L will provide 50 ohms at the base.  I believe it is
closer to 22 ohms.  Everyone I know has some type of matching.  This could
be an unun or caps.  You really need to have radials for the L to work

Search the archives and you will find a source for the Unun's.  They are not
too pricey.  They make one that have a number of different tap points.  I
simply used an antenna tuner at the base.

On 12/12/07 5:18 PM, "RLVZ at aol.com" <RLVZ at aol.com> wrote:

> Hi Guys,
> I've been doing research on 160-meter Inverted L's and would appreciate  your
> thoughts on the following:
> 1) Some people report that the 160-m. Inverted L can be fed directly with  50
> ohm coax with good results.  Is that true?
> 2) Some people feed their Inverted L's with fixed 500 or 1,000 pF
> capacitors.  What advantages does this offer, such as: lower SWR at
> resonance, and/or
> increased bandwidth?  (again these are "fixed" capacitors  not variable)
> 3) Can you offer a good resource for the 500 or 1,000pF  capacitors that will
> handle a Kw?
> I realize a variable capacitor is best as you can move around the band
> better... but for this temporary 160-m. Inverted L... I'd prefer Options 1 or
> 2  
> above.
> Best 73,
> Dick- K9OM  
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