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New antenna from Sirio Gain-Master

The mast is 8,8 meters (28'), stuck in the soil and grounded. The base of antenna is about 3 meters (9') above a metal roof and the tip somewhere at 15 meters (49'). I wonder how the metal roof is affecting the radiation of antenna. (On CB band) I'll apreciate any help. Daniel
- Danielvi
- Post #920
- Jan 22, 2017
- Forum: CB Antennas
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Signal strenght vs distance

"Field Strength Measurements will set you free...." That was a good one :-) Thanks for explanation.
- Danielvi
- Post #10
- Jan 11, 2017
- Forum: CB Antennas
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Signal strenght vs distance

I think I got the point, thanks. Daniel
- Danielvi
- Post #3
- Jan 9, 2017
- Forum: CB Antennas
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Signal strenght vs distance

Got into this: https://www.pasternack.com/t-calculator-fspl.aspx On 27 MHz if I calculate the loss after 100m I get 35.57 dB lost and after 500 m 49.55 dB lost. :unsure: There are 14 dB (more than 2 S-points) lost in 400 m ??? What is the reference ? 0 m from antenna ? I'm not the genius of...
- Danielvi
- Thread
- Jan 9, 2017
- Replies: 10
- Forum: CB Antennas

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