[SCCC] better than 2:1 on 30M

[Loren Hunt]

IMHO - The problem could be your 40M trap and or lack of a 30M trap. On 30M your rig will see the 32' length of the 40M as a 3/8 wave element (not easy to tune) If the 40M trap wasn't there your 80M run would look real close to 5/8 wave on 30M (easy to tune). You don't want to remove the 40M trap as you would have a 1/2 wave on 40M (voltage fed, hard to tune). You can either add a 30M trap or run a separate 22' vertical wire off the same feed point at the base.

My vertical (in continuous service since the fall of 2001) is a 1/4 wavelength on 80M and 30M looks close without the tuner. With the tuner it is 1:1. Your mileage may vary.

73
AD6ZJ, Loren

--- On Mon, 9/21/09, rick darwicki <n6pe at yahoo.com> wrote:

> From: rick darwicki <n6pe at yahoo.com>
> Subject: [SCCC] (no subject)
> To: "Group SCCC" <sccc at contesting.com>, "Group Topband" <topband at contesting.com>
> Date: Monday, September 21, 2009, 8:38 AM
> Hi all,
> 
> I have an inverted L mounted about 20' above ground, old
> Create 40/80 vertical with big homemade traps for 40 and 80.
> DX Engineering choke at base.
> 
> Using my NYE 3KW tuner I can get a 1:1 SWR on any band
> 160-10M EXCEPT on 30 M where lowest SWR at the radio is 2:1.
> This is with minimum "C" and some "L" inserted.
> 
> Anyone have any bright ideas on how I can improve the 30 M
> without taking the antenna down or messing up the other
> bands ??? I.E. matching stub, feedline transformer etc.
> 
> I would like to do this without adding and switching.
> 
> Yes, I know, I probably stand as much chance of that as
> working the FT5 on 160 hi hi
> 
> Thanks
> 
> 
> Rick, N6PE
> ===============================================================
> Remember, E = M * C^2 was not the entire equation.
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