[Elecraft] Inverted L for 160 meters

[Michael K Bottles]

Interesting, I have a doublet 125 feet per leg and fed with 600 ohm true open ladder line (not window line) and the K-3 and KAT-500 both tune it to 1:1 160-6.

Feed point 40 feet up with ends at about 10 feet each. So inverted Vee.

Sent from my iPad

> On Aug 25, 2020, at 16:59, kevinr <kevinr at coho.net> wrote:
> 
> Two reasons why I want to use an inverted L.  One) it fits my property well.  Two) I have never tried one before.
> 
> I currently have an extra long doublet.  I can't remember the exact length but seem to remember over 120 feet for each leg.  The tuner on my K3 just won't match it below 2:1.0 so I don't want to transmit on it.  It hears well enough but just won't match.
> 
> Reason number two pushes me onward :)
> 
>    73,  Kevin.  KD5ONS
> 
> 
>> On 8/25/20 4:49 PM, Lyn Norstad wrote:
>> Good gracious.  Why does everyone overthink 160m?  OK, maybe just because it's fun.  I get that.
>> 
>> But as to operation, I have one (1) antenna, and it is a 360 foot EDZ (dipole) cut for 3.5 MHz.  It's great on all bands, 160 - 6m.  No radials needed.
>> 
>> Specifically I worked 47 of the 50 states in one 24 hour period on 160m (holdouts were AK, HI and NV - all picked up within a day or two).
>> 
>> I could 'splain more, if anyone is interested.
>> 
>> 73
>> Lyn, W0LEN
>> 
>> 
>> 
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of kevinr
>> Sent: Tuesday, August 25, 2020 6:24 PM
>> To: Elecraft Reflector
>> Subject: [Elecraft] Inverted L for 160 meters
>> 
>>  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
>> 
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