At 4/10/2005 05:54 PM, you wrote:
>At 04:20 PM 4/10/05, you wrote:
>
> >Hi all
> > Does anyone know if a dual band antenna for 144/220 is available. .
> >If so who makes it?
> >Thanks in advance
> >Mike
>
>Mobile, base or mountaintop repeater (i.e. bad weather) ?
>
>Mobile, well, take your pick.
>
>Base, look at Diamond or Comet, but use some of the
>self-gluing heat shrink (CATV style) around the joints.
>Do a web search at www.repeater-builder.com (the
>search function is just above the main menu) for CANUSA.
>
>Repeater - there is only one decent dual band commercial
>grade antenna that I have found, and it's a compromise...
>the DB 314 is essentially a 8 UHF dipoles (a DB-408, 6.6db
>gain) and 4 high band dipoles (half of a DB-304, 3.2db) on
>the same mast, made with separate harnesses. You can
>use separate feedlines or a TX-RX commercial grade diplexer
>and one feedline.
He's talking 2 meters & 220, not 2/440.
Comet's has a tri-band (2, 220 440) CX-333 base antenna that I use for a
220 system only (serves as backup for a GP9 that the 2 meter & 440 systems
use). It seems to do well on 220. Definitely better than an Isopole,
which was our first antenna at the site.
>The DB314 or the 408/204 combination is NOT cheap, but
>quality antennas never are. You can, however, plan on
>amortizing it over 20+ years. How many Diamonds or Comets
>would you have bought over that time period?
If installed in SoCal, 1. Maybe 2. If installed at Pike's Peak, maybe 300.
Bob NO6B
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