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.
Vswr graphs will mirror theory and will vary with your ground system. 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
Sent from my iPad
> On Dec 5, 2017, at 5:42 AM, Frank VO1HP <invl160@gmail.com> wrote:
>
> OK Jim
>
> ...what is it on 20-10m? 1/4 wavelength on each 20-17-12-10?
>
> Are there any SWR curves available to see.
>
> Frank VO1HP
>
> 73
> Frank VO1HP
>
>
>> On Tue, Dec 5, 2017 at 3:31 PM, Jim Rhodes <jimk0xu@gmail.com> wrote:
>>
>> It is full size on 40, loading coil below that.
>>
>> Jim Rhodes
>> K0XU
>>
>> On Dec 5, 2017 8:43 AM, "Frank VO1HP" <invl160@gmail.com> wrote:
>>
>> is the Big IR vertical a 1/4 wave vertical on all bands?...or on bands
>> above 40 some other length?
>>
>> 73
>> Frank VO1HP
>> _______________________________________________
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