I use coaxial inverted Ls. Direct feed and no tuner needed if feeding a single
coaxial inverted L. (I phase
multiple inverted Ls and that does require a tuner).
The coaxial inverted L does require radials. (The more the merrier, but the
antennas start to play nicely
with 3 or 4 radials). Presently, I have 60 radials under each antenna.
My coaxial inverted Ls (160M, 80M) are looped over trees. The 40M and 20M
coaxial inverted Ls are
basically totally vertical.
These antennas work GREAT for DX; lousy for 'local' stuff!
SWR is less than 2:1 across the entire band depending where you design the
center point. Built using
RG8X.
Coaxial inverted L is actually 1/2 of a bazooka antenna.
Will be applying for 160M endorsement to my 5 band DXCC in January!
-- Bruce, WA3AFS
On 12 Dec 2007 at 19:18, RLVZ@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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