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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