Topband: 4 Square Receiving at 3V8SF

[Joe Subich, W4TV]

 > The vertical is 130m away from the array center.

Ash, at less than 1 wavelength the TX antenna is still within the
near field and can most certainly impact the receiving array.  The
real questions are how much does it impact the shortened verticals
(pattern impact) and how much noise does it radiate because it is
resonant.

73,

    ... Joe, W4TV


On 2019-03-02 5:56 AM, Ashraf Chaabane wrote:
> Clive,
> 
> The vertical is 130m away from the array center. I'm presuming this is a 
> good distance to avoid interaction.
> 
> 73 Ash 3V8SF
> 
> ------ Original Message ------
> From: "Clive GM3POI" <clive at gm3poi.com>
> To: "Ashraf Chaabane" <ash.kf5eyy at gmail.com>; topband at contesting.com
> Sent: 02/03/2019 11:54:48
> Subject: RE: Topband: 4 Square Receiving at 3V8SF
> 
>> Ash model in also your TX antenna and see whether you need to isolate 
>> that
>> vertical on RX with a relay.  73 Clive GM3POI
>>
>> -----Original Message-----
>> From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Ashraf
>> Chaabane
>> Sent: 02 March 2019 10:46
>> To: topband at contesting.com
>> Subject: Topband: 4 Square Receiving at 3V8SF
>>
>> Hi guys,
>>
>> I built a 4 Square Receiving Array for 160m at 3V8SF. I put details in
>> my website: http://kf5eyy.info/topband.htm
>> The achieved F/B so far is 20 db and the F/S is 19 db. There is still
>> room for improvement with better matching of the elements. I'll need
>> time to do that.
>>
>> Thanks to Ahmad 3V1B and Majdi 3V1M for helping me setting up of the
>> elements. Also to K7TJR, W3LPL and W0FLS
>> for the valuable support.
>>
>> 73 Ash 3V8SF, 3V8SS
>> www.kf5eyy.info
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