On Mon, Oct 10, 2011 at 8:38 AM, ZR <zr@jeremy.mv.com> wrote:
> Ive been using BN73-202 cores on 2 wire reversible Beverages in the
> 500-900' range. They work fine down to 150KHz with surprisingly good
> directivity on the LF BC stations as well as NDB's ... performance is good
> thru 30M.
> Even 20 shows directivity ...
>
This is precisely my observation, using those same cores on my 580'
bi-directional Beverage antenna transformers. 73 material works very well
indeed from 150 kHz to 30 MHz.
Rarely, my Beverages even are superior for receiving on 15 meters. On 40
meters--where I've been operating this summer--they beat my elevated 1/4λ
vertical hands-down 99% of the time.
73 Mike
www.w0btu.com
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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