[TowerTalk] Another aluminum question

Jim Lux jimlux at earthlink.net
Sat Dec 8 11:07:08 EST 2007

-----Original Message-----
>From: Alex Malyava <alex.k2bb at gmail.com>
>Sent: Dec 7, 2007 4:00 PM
>To: Jim Lux <jimlux at earthlink.net>
>Cc: towertalk at contesting.com
>Subject: Re: [TowerTalk] Another aluminum question
>yeah, you right, it sounds reasonable. I know there are poles made by
>SpiderBeamers - 12 and 18 meters long. They are quite expensive, but it is
>not big deal...
>The other thing worrying me is bandwidth. I think the narrower you go with
>wire - the narrower the antenna is.

At 160m (or even 80m), the bandwidth difference between 1" and 0.1" is negligible.

You might be able to come up with some nice easily/automatically adjustable tuning network.  The network at the base of the antenna just gets you close, and another tuner at the rig does the fine adjust.  A VSWR of 3:1 on the coax isn't a real killer, it's when it's 15:1 or 1000:1 that the coax loss really bites you.

Jim, W6RMK

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