Hi Ashraf,
The rule of thumb I use is 2D^2 /lambda, where D is the largest
dimension of the antenna. So if your Bev is 320m long you need to be
over a km away. If only 160m long you need to be 300 m away.
73, and I hope to work you one of these days at my SR.
Greg, ZL3IX
On 2018-10-09 09:07 p.m., Ashraf Chaabane wrote:
Hi All,
I used a 1.843 oscillator to check NA beverage F/B. The mesurements were
taken 160m away from each end of the antenna. Noise level was constant. I
had 4 dB difference between front and back signals.
Is that what I should expect? Is 1 wavelength distance enough to do this
experience?
This will be repeated with different terminations and I want to make sure
I'm doing it correctly. It will also be applied on the newly installed BOG
to determine optimum length.
Tnx and see you on the air!
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