Feeding with ladder line you will need the 2x40m dipole
if you want to load up for 160m and this will require the
MFJ balanced line tuner. 80 and 40 will be okay also.
de Joe, aa4nn
----- Original Message -----
From: "Samir Popaja, 7S7V (SM7VZX)" <firstname.lastname@example.org>
Sent: Thursday, November 13, 2008 12:41 PM
Subject: [Antennaware] CG-3000 vs MFJ-974HB on 160, 80,40m band (or one
antenna to low bands)
> Mike, please I need your advice:
> CG-3000; http://www.arraysolutions.com/Products/cg_3000.htm
> MFJ-974HB; http://www.mfjenterprises.com/Product.php?productid=MFJ-974HB
> I need to solve my problem on low bands; 160, 80 and 40m with one antenna.
> These are my possible solutions (which is better according to you antenna/
> tuner knowledgeable people).
> The antenna will be used primary for contest.
> 1. Inverted L (15m + 25m) with radials, feeding with coaxial cable and
> CG-3000 in feedpoint
> 2. Dipole (2 x 20m), via 450 ohm open line and MFJ-974HB, on 160m the
> antenna will be used like T vertical and ground (@20m)
> 3. Dipole (2 x 40m), via 450 ohm open line and MFJ-974HB (@20m)
> 4. Inverted L (15m + 25m) with radials, via 450 ohm open line and
> 5. Battle Creek Special (on SPIDERBEAM 18m pole) with
> (http://www.unadilla.com/traps.htm) traps for 80 and 40m
> *What's the behave of solution 2. and 3. against halfwave dipole feed via
> 50ohm coax on 40 respective 80m with same height, @20m?
> *The MFJ unit has 4 x 250pF, is it enough for low bands?
> *Do you know how big is the losses with this kind of TUNER
> (CG-3000) which has small capatitors and coils versus MFJ-974HB with
> bigger C and L?
> I got some info about AT-502-Tuner by Hamware, www.hamware.de but it
> little bit expensive...
> Thank You for all answers/ suggestions.
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