[TowerTalk] Hustler 5BTV Problem

[Gene Fuller]

If you've got a good match at the antenna, changing coax length shouldn't 
make much difference other than longer will be a little lossier even on 40 
therefore it might look a very little bit better. If your match is not good 
at the antenna you might find a good spot by varying the coax length but it 
could screw up any other band that also had a not so good SWR at the 
antenna. I use that idea to flatten the SWR on my LP - a box with relays and 
2,4, and 8 foot lengths of coax giving me 2 to 14 feet in two foot 
increments - good for 6  -  20 meters. The same idea could also be used to 
fine tune the takeoff angle on a stack if the individual antennas are well 
matched to start out with. The length changing can be done any place along 
the line that's convenient - either end or anywhere in between.

Gene / W2LU

----- Original Message ----- 
From: "Mike Murphy" <kd8ok at yahoo.com>
To: "Tower and HF antenna construction topics." <towertalk at contesting.com>
Sent: Wednesday, January 20, 2010 8:07 PM
Subject: Re: [TowerTalk] Hustler 5BTV Problem


> Just a guess, but your 60 feet of coax is suspect here.  Try adding 5 or 
> 10 feet of coax and I bet your problems go away.
>
> Good Luck!
>
> __________________________
>
>
> Michael Murphy - KD8OK
>
>
> kd8ok at yahoo.com
> __________________________
>
>
>
>
> ________________________________
> From: Kelley <kshaddrick at jetup.net>
> To: towertalk at contesting.com
> Sent: Wed, January 20, 2010 6:47:32 PM
> Subject: [TowerTalk] Hustler 5BTV Problem
>
> I've been working with a 5BTV antenna for about two weeks now. I've got
> good SWR readings on 10m, 15m and 80m. Higher but usable readings on
> 20m. However, I can't get anything under 2.0:1 on 40m. The antenna is
> ground mounted with 20 25' radials. It's fed with about 60' of coax.
>
> I've tried the normal tuning as well as adjusting the traps. Nothing
> seems to bring the SWR on 40m down to something usable.
>
> Anyone have any ideas I can try?
>
> Kelley - W0RK
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