[Antennas] 160/80_METER_DIPOLE_FED_WITH_LADDER_LINE_??

Tue Nov 21 11:37:02 EST 2006

If the 350 foot flat top is broadside to your primary coverage interest, I'd 
leave the traps out. You'll get around 3 dB gain in those favored 
directions, with the traps you'd get no gain but you'd have a broader lobe 
which would cover a greater azimuth coverage from 90 degrees to the wire 
(broadside).
I'd say loose the traps - they're just one more thing to go defective on 
you.
73
David Ring, N1EA
----- Original Message ----- 
From: "Danny Richardson" <k6mhe at k6mhe.com>
To: <antennas at mailman.qth.net>
Sent: Tuesday, November 21, 2006 11:10 AM
Subject: Re: [Antennas] 160/80_METER_DIPOLE_FED_WITH_LADDER_LINE_??
At 07:26 AM 11/21/2006, you wrote:
>I am going to re-do my 350 foot flat top currently fed in the center
>with 450 ohm ladder line. If I shorten it to make it a 160/80 meter
>dipole with a set of 80 meter traps (I already have) can I still
>feed the dipole with 450 ohm ladder line???
>Why do I ask? If I don't have to re-do the center of the flat-top to
>feed it with coax I won't have to let the tower down to re-do the
>center, a big job!
>Will this combo work?

Yes. Do the math. You're going to be seeing somewhere between 5:1
and 8:1 mismatch. Duck soup for open line.
Danny, K6MHE
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