[Elecraft] Coax Loss Figures

[Brett Howard]

This is definately something I plan on trying but first I'm going to use it
as intended and record results to see how they match with what I'm told and
what I read...  For me its not about the score its about new things to try
and more data to capture and understand. I think overcoming the problems of
this setup in many different ways will keep me busy for at least 5 more
field days.  To me that's good fun!  Reminds me of the way my late
grandfather was and helps me feel closer to the old man that got me into the
hobby in the first place. I only wish I could still share it with him today.


~Brett (N7MG)

On Jun 23, 2010 7:22 AM, "Radio Amateur N5GE" <n5ge at n5ge.com> wrote:
> On Wed, 23 Jun 2010 00:19:03 -0700, Brett Howard
> <brett at livecomputers.com> wrote:
>
> Ditch the 43 foot vertical! The 43 foot vertical craze is a joke, as
> you can see by the figures, Tom, W8JI, gives you in his post showing
> feedline loss and SWR.
>
> During FD you are going to get most of your points from QSO's within
> the U.S.A., so put up a 40m ground plane at eight feet on a 4X4 wooden
> post in a two foot hole with 4 radials (you can use the radials to guy
> the wooden post). 40m is a good band for day and night and is only 32
> feet or so tall plus eight feet of post. By doing this you will have
> a resonant antenna that will cover 360 degrees at ranges within the
> U.S.A.
>
> Adjust the length of your 43 ft vertical by removing the top ten feet
> and adjusting it for the end of 40m that you are going to work or set
> it in the middle of the band and attach it to the post.
>
> Tom, N5GE
> Licensed since 1976
> QCWA Life Member 35102
>
> n5ge at n5ge.com
> http://www.n5ge.com
> http://www.swotrc.net
>
>>Yea I know I'm going way overkill and I was doing all the calculations
>>by hand of total loss and at a 7:1 SWR (which is entirely possible on
>>this 43 ft vertical) the loss at 30Mhz can get kinda ugly... I've not
>>modeled it fully but on all bands but on 20 meters its 7:1 and on 40
>>meters its 3:1...
> [snip]
>
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