You might also look at W8JI.com where he has a pair of phased Beverages in
a box-like configuration spaced apart by 1/4 wave with the termination
halfway across on one end and fed halfway across the other end.
Herb, KV4FZ
On Wed, Sep 12, 2018 at 7:10 AM Tonno Vahk <tonno.vahk@gmail.com> wrote:
> Thank you Herb! I will look into it!
>
> 73
> Tonnoi
>
> On 11 Sep 2018, at 17:06, Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
> wrote:
>
> Tonno, I would suggest getting a DX-Engineering NCC-1 or NCC-2 to do the
> phasing for you in your ham shack. That way you will have phasing control
> right at your fingertips.
>
> Herb Schoenbohm, KV4FZ
>
> On Tue, Sep 11, 2018 at 9:01 AM Tonno Vahk <tonno.vahk@gmail.com> wrote:
>
>> Hi,
>>
>> Last weekend I finally got into experimenting with phased beverages,
>> something I was planning for some time.
>>
>> I installed 3 broadside 219m (718ft) long beverages into the forest
>> looking at 90 degrees and separated 60m (200ft) from each other (120m
>> between the outer ones).
>>
>> I took great care to make sure the wires are straight and fully parallel
>> to each other as well as starting from the the same line.
>>
>> I use DXE 9:1 beverage transformers and DXE 470 ohm termination resistors.
>>
>> I brought 150m (500ft) 50 ohm cable from each beverage feedpoint to the
>> shack and connected to Microham Stack Switch (like Stackmatch). All the
>> cables were of identical length to ensure same phasing.
>>
>> So I presume this system gives me full ability to test any combination of
>> those 3 beverages alone or phased with each other?
>>
>> Well, all the 3 beverages alone are quite identical indeed which is good.
>>
>> But now when switched in pairs or all 3 together I am not seeing much
>> effect. I do know what the patterns should look like and I presumed the
>> effect would be strong especially with signals coming from side but most of
>> the time I notice no difference with any signals when comparing any single
>> beverages to combinations.
>>
>> This is puzzling. Modelling suggests I should for example have very big
>> improvements in suppressing signals 45 degrees off on 160m when using 2
>> phased beverages 120m apart as well as when using all 3 beverages on 80m
>> but I did not notice such drops of 10-20db almost in any signals from any
>> off directions.
>>
>> I could hardly notice sometimes the expected 3-5db increase in the
>> signals from the right direction but not always as well.
>>
>> Can some of you having experiences with phased beverages tell me if I
>> have done something wrong in my setup?? Should I test them differently? Are
>> the phased beverages overrated and in real life there is seldom a
>> significant improvement over 1 single wire beverage that is already long
>> enough like 220m in my case?
>>
>> Look forward to any input. I can send the modelled patterns and maps of
>> my beverages in picture files to anyone interested.
>>
>> 73
>> Tonno
>> ES5TV
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>
>
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