[TowerTalk] BigIR question

[garyk9gs]

I just bought a CrankIR too.  Plans are to install over salt water, including the radial/ counterpoise.  The whole thing around 100 ft from the beach.

73-Gary K9GS 
-------- Original message --------From: Grant Saviers <grants2 at pacbell.net> Date: 12/6/17  11:32 AM  (GMT-06:00) To: Keith Dutson <kdutson at sbcglobal.net>, towertalk at contesting.com Subject: Re: [TowerTalk] BigIR question 
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 at contesting.com] On Behalf Of
> john at kk9a.com
> Sent: Wednesday, December 6, 2017 6:23 AM
> To: towertalk at 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 at gmail.com>
> Subject:	Re: [TowerTalk] BigIR question
> From:	Ed Richardson <ed_richardson at 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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