Hi Steve,
Thanks for your email and information.
We've been looking at the preamp design again but didn't manage to
confirm if it would deliver accurate phase/amplitude.
Can you (or anyone here) check the design and advise. It can be found
here: http://www.kiwisdr.com/docs/pa0rdt_whip.pdf
If an array of Miniwhips can fly, it would be a perfect solution for us.
73 Ash 3V8SS 3V8SF
On 19/02/2022 16:49, VE6WZ_Steve wrote:
Hello Ash,
The small vertical (HI-z) arrays like the 8 circle and 9 circle depend on VERY
accurate phase and amplitude between elements.
Even small variation in amplitude, or phase can destroy the pattern and RDF
which is what makes these arrays effective.
The HI-z amplifiers used in these arrays have very accurate phase and amplitude
which is normalized between all units.
I do not know what the PA0RDT amps are like, but this is a crucial thing you
need to look at.
73, de steve ve6wz
On Feb 19, 2022, at 1:25 AM, Ashraf Chaabane<ash.kf5eyy@gmail.com> wrote:
Hi All,
We recently built a couple of PA0RDT MiniWhip antennas that worked fine on low
bands (seehttp://www.kf5eyy.info/technical.htm) and we wonder if these were
used by anyone to make a steerable array.
Please advise.
73 Ash 3V8SF 3V8SS
www.kf5eyy.info
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