[TowerTalk] 40m 4el KLM - replacing linear loading with coils

[Wes]

Of course.

On 4/29/2020 6:21 AM, jimlux wrote:
> On 4/28/20 9:35 PM, Wes wrote:
>> I agree with Dave.  We had a similar discussion about this (using monopoles) 
>> nearly 20 years ago in the rec.radio.amateur.antenna forum.  I wrote a little 
>> paper at the time; I see it's available at: 
>> https://www.qsl.net/n7ws/Loaded_Antennas.pdf  Of note is my reference #1.
>>
>> Wes  N7WS
>>
>
>
> I think, though, that the whole "short vertical" thing (typically in the 
> context of vehicle mounted antennas) is a much more extreme case than a loaded 
> 40m, where the elements are nearly full sized (46 ft vs 66 ft).
>
> The radiation resistance of a 8 foot monopole for 7 MHz is a lot smaller than 
> the loaded 40m yagi element.
>
> Loss resistance is going to be a much bigger factor for something with a 2 ohm 
> radiation resistance than for something with a 20 or 50 ohm Rrad.
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk