It's well proven on many DXpeditions, particularly close to salt water.
Be aware the single radial can have some very high end voltages at QRO.
Also, salt spray on the end insulator can cause arc overs and melt it.
Grant KZ1W
On 12/6/2017 6:41 AM, Keith Dutson wrote:
I purchased the CrankIR, which is a manual version of the BigIR. It is
shorter than the BigIR. SteppIR claims it has a gain .3db lower than the
BigIR. I got the 80 meter version, with carry bag (25"L X 8"W X 8"H). I
use the YouKits FG-01 Analyzer to get precise SWR readings for the selected
frequency.
This is a great alternative for portable use, either backpacking or
DXpedition. It may be on the air in Aruba next year.
73, Keith NM5G
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
john@kk9a.com
Sent: Wednesday, December 6, 2017 6:23 AM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] BigIR question
This is a much better antenna than the fixed height 43' vertical that is so
popular.
John KK9A
To: Frank VO1HP <invl160@gmail.com>
Subject: Re: [TowerTalk] BigIR question
From: Ed Richardson <ed_richardson@shaw.ca>
Date: Tue, 5 Dec 2017 19:44:07 -1000
Jim. The bigIR can be tuned to a quarter wave on all frequencies from 7 to
54 MHZ. On frequencies from 21-54 MHz you can select a 3/4 wavelength mode.
I have used this antenna with raised radials, tuned stub radials and a
ground mounted radial field. Works well in all cases. It is still a
quarter wave vertical.
No magic
Ed. Ve4ear
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