[Antennas] INV_L_SWR
Jack Painter
223bthp at cox.net
Sat Nov 25 11:58:20 EST 2006
Good advice on both accounts Dave, because the pursuit of perfection on a
single antenna for multi-band use is fruitless. A wire can only be resonant
on one frequency, and complimentary on a couple others. The more junk added
to provide lower SWR just results in an antenna so lossy it becomes useless.
Which leads to Dave's suggestion to use the tuner (or coupler) at the
feedpoint, where it always belongs but is often inconvenient to achieve.
Regards,
Jack
-----Original Message-----
From: David W Sher
Subject: Re: [Antennas] INV_L_SWR
You can always use a tuner, either remote at the base of the antenna, or
else in the shack. However, if it works, don't fix it.
Dave W9LYA
Nov shmoz ka pop?
On 2006年11月25日 09:26:51 -0500 "George" <goofyham at highstream.net>
writes:
> I put up an inverted L antenna this past week. The best I can do on
> SWR is 2:1 measuring at the base with my MFJ analyzer and varying a
> variable cap in series with the center conductor of the coax on 160
> meters.
> If I wanted to get it down to 1:1 how can I accomplish this and have
> it useful on 160 and 80 meters? I'm building a remote variable
> capacitor for the base.
> I don't have the exact dimensions but the best I can figure are 120
> feet of horizontal and 50 feet of vertical.
> By the way it works pretty good on 160 as is but I'd like to get it
> down under 1.3:1.
> Thanks.
> George
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