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Re: Topband: RBOG through radial field

To: KA2FIR <ka2fir@optonline.net>, topband@contesting.com
Subject: Re: Topband: RBOG through radial field
From: Grant Saviers <grants2@pacbell.net>
Date: Tue, 9 Jan 2018 16:33:29 -0800
List-post: <mailto:topband@contesting.com>
Beverages don't work well over continuous wire fencing, salt water, or other high conductivity platforms. If radial wires are perpendicular to the RBOG there is less affect. Modeling I've done shows insulating 3 strands of 1800' barb wire fencing into 200' segments only under 600' of #16 at 10' works ok as a directional Beverage, at 1.8MHz average gain -19.6 dbi, forward gain at 30 deg elevation of -8.2 dbi or an RDF of 11.2 as calculated with EZNEC Pro/4.

I proved continuous fencing under worked poorly (very low F/B) with two Beverages I built as bidirectional (2 feedlines) single RG6 before more knowledge stuck to me, but sold the ranch before insulating the fencing. What W8JI has to say is worth reading IMO, https://www.w8ji.com/beverages.htm

Grant KZ1W



On 1/9/2018 13:41 PM, KA2FIR wrote:
Hi,

Can a RBOG run through a radial field without compromising performance?

Tnx,

Mike KA2FIR


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