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--- blog:2025-02-03:antenna_isolation [2025/02/03 19:47] – va7fi
+++ blog:2025-02-03:antenna_isolation [2025/02/03 19:51] (current) – va7fi
@@ Line 35: / Line 35: @@
 </WRAP>
-So for example, if two antennas used around 147 MHz are 3 m apart (feedline to feedline), the isolation will be about:
+So for example, if two antennas used around 147 MHz are 3 m apart (feedpoint to feedpoint), the isolation will be about:
   * \$ \lambda = \frac{300}{147} = 2.04 \text{ m} \$
   * \$ \text{Isolation} = 28 + 40 \log(\frac{3 \text{ m}}{2.04 \text{ m}}) \approx 35 \text{ dB} \$
@@ Line 61: / Line 61: @@
 \$$ \text{Isolation} =28 + 40 \cdot \log \left(\frac{d}{\lambda}\right) \qquad \text{or} \qquad  \text{Isolation} = 28 + 12 \cdot \log_2 \left(\frac{d}{\lambda}\right) \$$
-They both say: when the separation is one wavelength, the isolation will be 28.
+They both say: when the separation is one wavelength, the isolation will be 28 dB.
   * But then the first one says: every time you multiply that separation by 10 (1, 10, 100, 1000, etc), you'll add 40 dB of isolation.
   * And the second one says: every time you multiply that separation by 2 (1, 2, 4, 8, 16, etc), you'll add 12 dB of isolation.