The folks from SteppIR mention just such a check in their DB18 assembly manual.
It was reassuring to see it resonate somewhere on all bands before I went
through the effort to get it onto the tower. What I cannot remember was how it
read on my analyzer when the beast was sitting on the sawhorses...I believe it
was lower than the frequency I dialed up on the controller, but 2+ years since
install has left my memory very fuzzy on that point.
-Paul
"Avoiding danger is no safer in the long run than outright exposure. The
fearful are caught as often as the bold."
-Helen Keller
> On Jun 1, 2016, at 20:22, jimlux <jimlux@earthlink.net> wrote:
>
>> On 6/1/16 7:00 PM, john@kk9a.com wrote:
>> Towertalk is definitely educational! I was also not aware of the way the
>> resonant frequency changed at low heights. I still see no point in checking
>> the SWR of an antenna near the ground. You can use an ohm meter if you're
>> unsure of your connections however it was an interesting discussion.
>>
>
>
> Actually, measuring SWR (or resonant frequency) might be useful close to the
> ground to make sure it's assembled right with the right traps, etc.
>
> The trick is you need to compare the resonant frequency against a measurement
> (done by the mfr) in a similar configuration.
>
>
>
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