Topband: Phased staggered beverages

[Kenny Silverman]

Thanks Frank & Dave,

The spacing and stagger I mentioned just doesn’t seem to work (the rear and side lobes and ultimately the RDF) regardless of the phasing. If I’m going for max RDF to EU that fits in my property the best scenario appears to be two 540’ beverages spaced ~20’ and staggered 70’.  I can fit that pair in my lot and the RDF is ~11.5 dB.  A 580’ single beverage has an RDF of ~9.83 dB.  

I know my beverage plans will change as I plan out the station but at least I have some options. 

Regards , Kenny K2KW 

> On Oct 18, 2020, at 11:37 AM, donovanf at erols.com wrote:
> 
> 
> Hi Kenny,
> 
> A single 580 foot Beverage is an excellent 160, 80 and 40 meter antenna.
> I still have three of them (NE. S. W) even though I also have 8-circle
> arrays for 160, 80 and 40 meters.
> 
> I've never used a pair of staggered Beverages with 350 foot broadside
> spacing, these are ideas based on no specific experience with your
> proposed configuration.
> 
> The offset shouldn't matter as long as you compensate for it by selecting
> optimum unequal length transmission lines to feed the Beverages,
> creating the equivalent of 110 feet of free space phase delay (about 100 feet
> of RG-6). Your favorite antenna modelling program will help you select
> the optimum transmission line length, but its not critical at all.
> 
> Alternatively, you could use a close spaced pair of staggered Beverages
> that improve the front-to-rear ratio, but the beamwidth of the main lobe
> isn't narrowed like a broadside pair of wide spaced broadside Beverages.
> 
> Good luck!
> 
> 73
> Frank
> W3LPL
> 
> From: "Kenny Silverman" <kenny.k2kw at gmail.com>
> To: "160" <topband at contesting.com>
> Sent: Sunday, October 18, 2020 3:20:17 PM
> Subject: Topband: Phased staggered beverages
> 
> My new house has 6 wooded acres in roughly a square. For EU, I was hoping to get a pair of phased 500’ beverages spaced 350’ apart. To do that, one of the 2 beverages will be 110’ in front of the other due to the lot-line orientation.  Regardless of the phasing I’m modeling, the side and back lobes are not to my liking. Is the 110’ forward stagger too far?   I can get a single 600’ beverage to Eu which has a marginally  worse RDF (0.35 less) than the not-perfect-staggered-pair but is much simpler and takes up less land. 
> 
> How much RDF increase does it take to be audible?
> 
> Regards , Kenny K2KW 
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