http://elecraft.85.s1.nabble.com/Inverted-L-for-160-meters-tp7664325p7664335.html
> You probably should get acquainted with Rudy Severns, N6LF.
> (
https://www.antennasbyn6lf.com/) He has written more than you ever
> want to know about vertical antennas,
>
> More specifically to your case, are you planning the radials to be
> elevated? If so, they need to be the same length, in fact some effort
> should be made to get all of the currents the same. The last thing
> you want is a fifty ohm feedpoint impedance with a shortened vertical
> (which is what an L is). There is evidence that elevated radials are
> an improvement over on-the-ground or buried radials. Mine are on the
> ground, mainly because 1) I didn't want to give up radiator height to
> raise the radials, 2) all of the big guns bury theirs and I don't have
> room for full length radials anyway in my cactus patch. See my QRZ
> page for evidence.
>
> My modeling shows a little bit of directivity away from the horizontal
> wire, but it's negligible.
>
> Wes N7WS
>
> On 8/25/2020 4:23 PM, kevinr wrote:
>> From what I can find, and what I can calculate, five wires, each ~130
>> feet long, could make a nice inverted L for 160 meters. One leg for
>> the vertical and horizontal portion of the antenna. Four legs for
>> the counterpoise (ground plane). There are many broken wire antennas
>> stored in my shed which are fodder for the radials. Do all of the
>> legs for the counterpoise need to be 1/4 wavelength or can I
>> substitute some shorter lengths? The feedpoint should somewhere
>> above 50 ohms impedance. As I add more radials that number will
>> reach 50 ohms asymptotically.
>>
>> I can get the vertical part up to 70 or 80 feet above ground with the
>> rest of it horizontal. Most of the radiation should take place from
>> the vertical part since it is closer to the feed point. But there
>> should be some effect from the direction of the horizontal portion.
>> How strongly does the direction of the horizontal portion effect the
>> radiation pattern of the antenna system? My property allows me to
>> point it from 300 degrees around to 200 degrees so I have plenty of
>> options. Between 200 and 300 degrees there is a road used by
>> loggers, and the folks maintaining the towers at the top of this
>> mountain. They can break any antenna lower than 80 feet above
>> ground. Spar poles and cranes clear out any dead limbs across the road.
>>
>> Inquiring minds...
>>
>> Kevin. KD5ONS
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home:
http://mailman.qth.net/mailman/listinfo/elecraft>> Help:
http://mailman.qth.net/mmfaq.htm>> Post: mailto:
[hidden email]
>>
>> This list hosted by:
http://www.qsl.net>> Please help support this email list:
http://www.qsl.net/donate.html>> Message delivered to
[hidden email]
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home:
http://mailman.qth.net/mailman/listinfo/elecraft> Help:
http://mailman.qth.net/mmfaq.htm> Post: mailto:
[hidden email]
>
> This list hosted by:
http://www.qsl.net> Please help support this email list:
http://www.qsl.net/donate.html> Message delivered to
[hidden email]