http://elecraft.85.s1.nabble.com/Inverted-L-for-160-meters-tp7664325p7664340.html
Be careful when doing these comparisons. A 1/4 wave over a ground
than your inverted L. What I would normally suggest is an A/B test using
what's the pattern.
> I am hearing quite a difference between my inverted V and my 1/4 wave
> over a ground plane. For the last few weeks I've been hearing less
> noise on the vertical. Enough less to pull more ops out of the
> noise. When I try the inverted L I expect there to be a little more
> noise than the vertical, but less than the doublet. Now to test that
> hypothesis.
>
> Kevin. KD5ONS
>
>
> On 8/25/20 5:04 PM, David Gilbert wrote:
>>
>> Pretty sure there are some significant pattern differences between
>> ANY horizontal antenna and a vertical one on 160m ... at least at
>> heights practical for amateur radio purposes.
>>
>> That's probably why.
>>
>> Dave AB7E
>>
>>
>> On 8/25/2020 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:
[hidden email]
>>> [mailto:
[hidden email]] 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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