Topband: Array of MiniWhips?

[Ashraf Chaabane]

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 at 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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